Why are most reviews upset at sealed SIM? What are the benefits of having the SIM exposed?
None, even if it was open. It's just an LTE sim.
None of the LTE networks in the U.S. are able to roam each other.
So say you had a Verizon LTE sim or an AT&T LTE sim & the slot was open on an off contract EVO LTE. It wouldn't do you any good.
I'm guessing you read the Engadget review?
I believe the big benefit of having a removable sim card is that you can change carriers, specifically overseas. For people who travel a lot, such as the folks who write the reviews on the tech sites, typically use an international sim card which allows them to have phone service overseas. With the ability to use gvoice and call from the internet connection, I really do not see this being a big issue; however, some do.
My question is will this restrict me from doing a esn swap. I doubt it but it doesn't hurt to ask, ya never know
id_twin said:
I believe the big benefit of having a removable sim card is that you can change carriers, specifically overseas. For people who travel a lot, such as the folks who write the reviews on the tech sites, typically use an international sim card which allows them to have phone service overseas. With the ability to use gvoice and call from the internet connection, I really do not see this being a big issue; however, some do.
Click to expand...
Click to collapse
You NEED to understand that this is a sealed LTE SIM slot, not just an ordinary regular SIM slot. So "changing carriers" is out of the question. None of the carriers are currently implementing interoperable LTE networks in the first place and there's no LTE networks in Europe.
LTE right now is being used for data, not voice. That's coming with VoLTE.
AJC9000 said:
My question is will this restrict me from doing a esn swap. I doubt it but it doesn't hurt to ask, ya never know
Click to expand...
Click to collapse
It shouldn't....
Sent from my PG86100 using xda premium
yeah i ha that thought too with the sealed sim complaint it makes absolutely no sense lost some respect for the reviewer there there is no lte in Europe and the portions of the lte band even the 800mhz are partioned and carrier specific in the US
trukenx said:
yeah i ha that thought too with the sealed sim complaint it makes absolutely no sense lost some respect for the reviewer there there is no lte in Europe and the portions of the lte band even the 800mhz are partioned and carrier specific in the US
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The whole engadget review is just really stupid. First they complain about no world mode and then the contained sim. Very few CDMA phones support any type of GSM and adding antennas to support it would probably make the device thicker as well as raise the price. I can kind of understand wanting a worldphone when the baseband supports both CDMA and GSM but it still seems odd to see that as a major detractor. With this in mind they add the non-removable sim as a second detractor. Finally they say they don't recommend the phone because Sprint's LTE isn't available yet but then praise the device for its fast EvDO speeds. Even when Sprint does have an LTE network it won't be available to most people. For that matter 4G networks are not available to the vast majority of users on any carrier.
This is not a world device. And I did see another thread here stating that lte roaming likely WILL be an option down the road.
sent from 2yr old Evo on ICS
Well when they are done by 2014 3g us to be replaced by LTE at least coverage wise so they say
Sent from my PG86100 using xda premium
The problem with LTE roaming is that the carriers all use different LTE spectrum. Sprint is planning on using 1900 MHz, which is different than ATT, which is different from Big Red. As someone said before, it's not like you could change the SIM and just use Verizon's LTE network all of a sudden, although that would be awesome.
yup Verizon LTE phones are soooo much better b/c you can simply put the ATT LTE SIM in the things and they will work on ATT network flawlessly......lol hahahaha
Seeing as the EVO 4G LTE is an LTE phone, the GSM and WCDMA radios are already there, they're just locked for LTE. It would be fairly easy for devs to enable the global capabilities, but because the SIM is embedded, enabling it would be a waste of time since you couldn't change SIMs anyway.
That is the point they're trying to make...
Beach_Head said:
Seeing as the EVO 4G LTE is an LTE phone, the GSM and WCDMA radios are already there, they're just locked for LTE. It would be fairly easy for devs to enable the global capabilities, but because the SIM is embedded, enabling it would be a waste of time since you couldn't change SIMs anyway.
That is the point they're trying to make...
Click to expand...
Click to collapse
Interesting.... I hope to see them raving about "un-embedded" SIM cards in any new LTE device the launches with them accessible since its "downright egregious" that it's embedded in the Evo.
Beach_Head said:
Seeing as the EVO 4G LTE is an LTE phone, the GSM and WCDMA radios are already there, they're just locked for LTE. It would be fairly easy for devs to enable the global capabilities, but because the SIM is embedded, enabling it would be a waste of time since you couldn't change SIMs anyway.
That is the point they're trying to make...
Click to expand...
Click to collapse
Would still req the antennaes be right for the freq and such......which is not the case I think...
Sent from my PG86100 using xda premium
Beach_Head said:
Seeing as the EVO 4G LTE is an LTE phone, the GSM and WCDMA radios are already there, they're just locked for LTE. It would be fairly easy for devs to enable the global capabilities, but because the SIM is embedded, enabling it would be a waste of time since you couldn't change SIMs anyway.
That is the point they're trying to make...
Click to expand...
Click to collapse
Each of the US carriers LTE networks run on different frequencies so it doesn't matter if you can remove the sim or not. As someone else said you cannot pop in a AT&T sim into a Verizon device and it will work. That's how it should be but because the LTE networks all run on proprietary frequencies renders them incompatible.
sgt. slaughter said:
Would still req the antennaes be right for the freq and such......which is not the case I think...
Sent from my PG86100 using xda premium
Click to expand...
Click to collapse
Right...
Making an open slot, pointless.
it matters to people who clone phones etc, if an esn gets blacklisted its possible they could blacklist the lte info. so people who are looking to edit the esn and buy a bad one there is a possiblity that in the future that would mean you couldnt have 4g. with an open slot if you acquired a different sim....
Noiro said:
None, even if it was open. It's just an LTE sim.
None of the LTE networks in the U.S. are able to roam each other.
So say you had a Verizon LTE sim or an AT&T LTE sim & the slot was open on an off contract EVO LTE. It wouldn't do you any good.
I'm guessing you read the Engadget review?
Click to expand...
Click to collapse
MVNO's use the same radio bands.
The SIM card would make it easier to swap devices.
This is all about lockin, and Sprint is using embedded SIM cards for the sole purpose of maximizing consumer lockin.
Related
I just rooted and unlocked mine via instructions here. I am getting an "E" icon, does that mean edge? How do I get 3G to work like people are claiming. I am outside of Orlando with a VERY reliable 3G connection normally.
It won't give you 3g on att lol. Tmobile uses different bands and vibrant does not support att 3g bands, just edge. You should have gotten the captivate, which is made to work on att 3g. It's just a given, almost every phone is like that. You can take most att phones, unlock them to work on Tmobile, but will only get edge, same thing with Tmobile phones. Can't be done...
Sent from my SGH-T959 using XDA App
afive720 said:
It won't give you 3g on att lol. Tmobile uses different bands and vibrant does not support att 3g bands, just edge. You should have gotten the captivate, which is made to work on att 3g. It's just a given, almost every phone is like that. You can take most att phones, unlock them to work on Tmobile, but will only get edge, same thing with Tmobile phones. Can't be done...
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Apparently it supports AT&T 3G bands
Source:
http://www.engadget.com/2010/08/22/confirmed-galaxy-s-unlock-codes-are-stored-in-your-phone-vibra/
Now the question is if the vibrant has both 850mhz and 1900mhz 3g bands.
I was wondering a similar thing. I saw that T-mobile roams on AT&T's networks a lot during a recent road trip, so do you think you can get 3g data speeds over those networks without the need for an ATT sim card?
Just debating whether or not to try to unlock it.
This is really odd - have not seen a device do this before but Engadget generally doesn't lie.
So basically it works on AT&T's 1900mhz based 3G network. In a lot of areas, it could actually work with an ATT SIM once unlocked.
I'm going to give this a try a bit later and will report back how it goes in my area. I know AT&T has both 850 and 1900 based 3G here.
I just took the fam out for icecream and picked up a 3G signal, but back at home on Edge...bah...
Yeah, their 1900mhz isn't as abundant as their 850mhz signal.
The best 'half-band' solutions typically involve a device that supports 850mhz but not 1900mhz, like the HD2 T9193 or HD T8285 both of which get 3G in *many* AT&T areas
Hi peeps,
My research on various forums so far suggests to me that there seems to be contradicting reports whether or not the Vibrant works on AT&T 3G.
I'm planning on importing this phone and use it with an HSPA 850 MHz network in my country, but I'm still skeptical about reception capability of this particular phone. Some reports indicated that the phone works with HSPA 850 while others confirmed that it only works with 1900 MHz band on AT&T.
Therefore, can anybody please confirm if this phone, once unlocked, actually works with HSPA 850. Thanks in advance for any help you might offer.
Sent from my GT-I9000 using XDA App
The phone definitely does not work with 850MHz.
I have a 850-only phone (HD T8285) as well as this Vibrant (1900 only) in front of me.
I just tested an AT&T SIM in both.
The T8285 gets excellent reception here, around 81dbm.
The vibrant on the other hand gets very spotty reception, ranging from 97dbm to around 110.
If the vibrant worked on 850, it would be getting similar reception. Instead it drops to EDGE a lot when using it on AT&T.
Edit: If I go outside, I can get decent 3g and good speeds:
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Still, very clearly 1900 due to spotty signal indoors
This is however quite a nice surprise - it opens the opportunity to use it on AT&T's network in places where 1900 3G is solid.
So it does not support 850? Secondly how do I know if I am in 850 or 1900 area?
larry996 said:
So it does not support 850? Secondly how do I know if I am in 850 or 1900 area?
Click to expand...
Click to collapse
Most areas are going to have both if anything, so the main thing you're going to want to know is if 1900 is strong enough where you are.
Unfortunately I dont know a truly reliable way to check a specific area for whether thats the case, besides actually trying a 1900 only phone
gsvnet said:
Most areas are going to have both if anything, so the main thing you're going to want to know is if 1900 is strong enough where you are.
Unfortunately I dont know a truly reliable way to check a specific area for whether thats the case, besides actually trying a 1900 only phone
Click to expand...
Click to collapse
Not true, AT&T is working on moving their entire 3G network to the 850mhz band... Here in New York City they're exclusively 850mhz unless I'm mistaken.
DevPhone1337 said:
Not true, AT&T is working on moving their entire 3G network to the 850mhz band... Here in New York City they're exclusively 850mhz unless I'm mistaken.
Click to expand...
Click to collapse
I heard that same thing. So if the Vibrant "only" does 1900.... those in 850 are SOL!
Anyone know how old this map is....?????
http://www.cellularmaps.com/att_850_1900.shtml
DevPhone1337 said:
Not true, AT&T is working on moving their entire 3G network to the 850mhz band... Here in New York City they're exclusively 850mhz unless I'm mistaken.
Click to expand...
Click to collapse
They've simply re-allocated much of the 3G network to the 850Mhz band, but based on my testing (with a vibrant), they have not totally gotten rid of 1900 3G - it still exists.
The problem with that map is it doesn't differentiate between 2G and 3G.
I have an att sim and I can get 3g on my unlocked vibrant. You can get into the debug screen and clearly see wcdma 850 listed and it is unchecked by default. Only 1900 and AWS bands are enabled. Since we have 1900 att 3g here it works fine. I just haven't had nerve to enable the 850 in the screen to test it. But I have read reports that enabling 850 does absolutely nothing anyway since the hardware does not support that band.
afive720 said:
It won't give you 3g on att lol. Tmobile uses different bands and vibrant does not support att 3g bands, just edge. You should have gotten the captivate, which is made to work on att 3g. It's just a given, almost every phone is like that. You can take most att phones, unlock them to work on Tmobile, but will only get edge, same thing with Tmobile phones. Can't be done...
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Its confirmed that it gets att 3g: http://www.engadget.com/2010/08/22/confirmed-galaxy-s-unlock-codes-are-stored-in-your-phone-vibra/ My recommendation is to mess around with it.
Sent from my SGH-T959 using XDA App
could someone confirm the 850mhz reception?
To what ive seen the vibrant comes with both 850/1900 bajds making it more then compatable with ATT 3G
I own an HTC Thunderbolt, but I am forced to switch to AT&T. I am able to buy an unlock code for my phone, will I be able to unlock it and it run on AT&T? I would like it to run 3G or better. If you have any info, please let me know. THANKS!!
McNugget93 said:
I own an HTC Thunderbolt, but I am forced to switch to AT&T. I am able to buy an unlock code for my phone, will I be able to unlock it and it run on AT&T? I would like it to run 3G or better. If you have any info, please let me know. THANKS!!
Click to expand...
Click to collapse
short answer: no
long answer: read the other posts in the thunderbolt forums for similar questions.
Side note: there are some verizon phones that are "world phones" that have sim cards in them. The droid 2 I think some of the blackberries do. I would return and get one if you can.
http://www.verizonwireless.com/b2c/...etail&selectedPhoneId=5567&deviceCategoryId=1
the TBolt has a SIM card....
Verizon uses 700mhz and att doesnt. Not compatible
Sent from my ADR6400L using XDA Premium App
Ferrari353 said:
the TBolt has a SIM card....
Click to expand...
Click to collapse
different type of SIM card. Thunderbolt has one for 4g only. Verizon uses CDMA for 3g and LTE for 4g, and probably some other band for voice. ATT uses GSM for 3g and HSPA+ for 4g. So they are completely NOT compatible.
ATT will be eventually going to LTE, but they could be dicks about it and choose a different frequency of LTE than verizon to prevent people from switching networks (since there's more than one to pick from), thus making it incompatible still.
Currently, all voice is CDMA on verizon still and data is CDMA as mentioned if it's 3g and LTE if it's 4g (which is what the sim card uses as it is the next incarnation of GSM). Next year they will be transitioning to voice over LTE.
If the qualdcom processor on the EVO is ment to support LTE which in turn uses a sim card shouldn't that make the phone a world phone I know it is suppose to have an embeded sim. But my true question is will we be able to reporgram the sim once we get root or will write have to go with more of a hardware mod if we wish to make it a world phone.
Tactic13 said:
If the qualdcom processor on the EVO is ment to support LTE which in turn uses a sim card shouldn't that make the phone a world phone I know it is suppose to have an embeded sim. But my true question is will we be able to reporgram the sim once we get root or will write have to go with more of a hardware mod if we wish to make it a world phone.
Click to expand...
Click to collapse
Sprint uses embedded LTE technology to my knowledge, so its not like on Verizon where there is an LTE sim card. Also, this phone is a CDMA phone, and therefore does not have a regular sim card slot (Like phones on ATT or TMo). No software modifications will change this, and I highly doubt that anyone could even attempt to make a hardware modification to make this phone a world phone. Also, and LTE sim card is not the same as a regular sim card, as they perform different actions (access to LTE and the rest of the network is seperate).
Yeah I was thinking that it does not have the slot the thing is that the processor does support gsm also I was kinda hopeing it was like the rezound it is cdma phone on Verizon. It was found out that just by removing verizons LTE sim card and adding a gsm one it allowed the phone to work as a gsm phone.
the evo lte does not have the GSM and HSPA+ radios to be a world phone
When I preordered, the rep told me it was a world phone. I didn't think she was right but I didn't say anything.
Yeah i read the same post on Engadget i think. What a bummer was hopping it was since it is rocking the same processor that the at&t one (correct me if im wrong). Plus like i also stated was hopping it was like the HTC rezound on Verizon that with a experiment it ended up working. O well .... still kinda wanna take it apart and try wouldn't be xda without some experimenting or moding.
My friend has a Droid bionic which wasn't supposed to have GSM support, but it did through some hacks on rootzwiki and using a T-Mobile sim card. I think that the s4 includes a GSM radio, so its probably possible at least if the sim card can be accessed. Lte is GSM based so it is likely that GSM support is there if software is modified like it was on the bionic.
Sent from my GT-P7510 using Tapatalk 2
mlin said:
When I preordered, the rep told me it was a world phone. I didn't think she was right but I didn't say anything.
Click to expand...
Click to collapse
Sure, you can use it anywhere in the world that has a compatible CDMA network.
Many identify world phone with GSM radios (which the Evo 4G LTE does not have), but CDMA (which it does have) does work well for roaming in Asia.
I've roamed with my Evo 4G across Japan, Korea, and China for both voice and data. There's a full list of countries with CDMA roaming on the Sprint website. As soon as you arrive in country (if roaming works), you receive a free text with the rates and instructions on how to make international calls.
Is there any way to get the AT&T variant working on Verizon? Heard users could flash the T-Mobile radio for them but what about Verizon?
No. Not at all possible.
Thank you, it was worth a shot
Airo18 said:
Thank you, it was worth a shot
Click to expand...
Click to collapse
I think the correct answer is, no one knows yet. Modern smartphones are capable to supporting multiple network types, frequencies and technologies. Hardware-wise, the AT&T, T-Mobile, and (probably) the Sprint versions are identical and differ only by provisioning and preloaded software.
d2kplus said:
I think the correct answer is, no one knows yet. Modern smartphones are capable to supporting multiple network types, frequencies and technologies. Hardware-wise, the AT&T, T-Mobile, and (probably) the Sprint versions are identical and differ only by provisioning and preloaded software.
Click to expand...
Click to collapse
Verizon and AT&T while both "4G LTE" using basically the same technology, have different frequency radios in them. They aren't cross platform capable.
d2kplus said:
I think the correct answer is, no one knows yet. Modern smartphones are capable to supporting multiple network types, frequencies and technologies. Hardware-wise, the AT&T, T-Mobile, and (probably) the Sprint versions are identical and differ only by provisioning and preloaded software.
Click to expand...
Click to collapse
Rogue Leader said:
Verizon and AT&T while both "4G LTE" using basically the same technology, have different frequency radios in them. They aren't cross platform capable.
Click to expand...
Click to collapse
It's not possible, period. Sprint and Verizon operate on CDMA networks, whereas AT&T and T-Mobile operate on GSM. As long as the proper frequencies are supported, any GSM phone can run on any GSM network provided they're SIM unlocked.
4GLTE is currently only used by Verizon for data connections, and not for voice/text--that relies on the 3G CDMA antennae. The same goes for Sprint. The AT&T/T-Mobile-/International HTC One does not physically possess an CDMA atennae. Now before you get your hopes up about using a Sprint phone on Verizon, here's another little wrinkle. As you know, every phone has a serial number. That serial number is known as the IMEI on GSM carriers, and ESN on CDMA carriers. Both Verizon and Sprint operate a massive list of ESNs for everyone phone that can operate on their network. If your ESN is not found on that list, then you cannot activate it on that particular network period, paragraph, end of story. Do not pass go, do not collect $200.
Things get a little murkier with CDMA when it comes to flashing the radios over to other CDMA carriers, but you're looking at services like MetroPCS, PagePlus, etc and that's outside my realm of expertise.
Airo18 said:
Thank you, it was worth a shot
Click to expand...
Click to collapse
Rogue Leader said:
Verizon and AT&T while both "4G LTE" using basically the same technology, have different frequency radios in them. They aren't cross platform capable.
Click to expand...
Click to collapse
The Verizon and AT&T networks use the different frequencies and technologies. However, the HTC One (like the iPhone 5) is able to run on nearly all permutations of modern phone networks. Apple makes only two versions of the iPhone, one for AT&T and one for everyone else. The AT&T version only exists because AT&T strong armed Apple into removing AT&T's LTE block from the main model.
For example, the Sprint version of the One is a world phone, usable on global "GSM" networks, as well as Sprint's "CDMA" networks. I put GSM and CDMA in quotes because modern wireless networks are more complicated than either of those two designations, and high-end phones are now designed to deal with those complexities via soft configuration vs. dedicated hardware.
d2kplus said:
The Verizon and AT&T networks use the different frequencies and technologies. However, the HTC One (like the iPhone 5) is able to run on nearly all permutations of modern phone networks. Apple makes only two versions of the iPhone, one for AT&T and one for everyone else. The AT&T version only exists because AT&T strong armed Apple into removing AT&T's LTE block from the main model.
For example, the Sprint version of the One is a world phone, usable on global "GSM" networks, as well as Sprint's "CDMA" networks. I put GSM and CDMA in quotes because modern wireless networks are more complicated than either of those two designations, and high-end phones are now designed to deal with those complexities via soft configuration vs. dedicated hardware.
Click to expand...
Click to collapse
Sort of, sort of. You're going in the right path, but still not quite there. Hardware is still very important.
GSM phones are considered world phones because most of the networks operated in foreign countries run on GSM, right. CDMA world phones possess both antennae in order to access the networks over seas, but GSM phones don't have CDMA antennaes because... well, they don't need them. Your chances of going to a CDMA-only country is so very small that it's not worth while to make the investment. Let's take the opposite example using the iPhone 5: You can't take an AT&T/T-Mobile/International iPhone 5 and put in a Sprint SIM card. You can even do a iTunes restore using the Sprint IPSW onto that phone(actually don't know if that would work or not, but I digress) and it STILL won't get a signal because it physically lacks the antennae.
unremarked said:
Sort of, sort of. You're going in the right path, but still not quite there. Hardware is still very important.
GSM phones are considered world phones because most of the networks operated in foreign countries run on GSM, right. CDMA world phones possess both antennae in order to access the networks over seas, but GSM phones don't have CDMA antennaes because... well, they don't need them. Your chances of going to a CDMA-only country is so very small that it's not worth while to make the investment. Let's take the opposite example using the iPhone 5: You can't take an AT&T/T-Mobile/International iPhone 5 and put in a Sprint SIM card. You can even do a iTunes restore using the Sprint IPSW onto that phone(actually don't know if that would work or not, but I digress) and it STILL won't get a signal because it physically lacks the antennae.
Click to expand...
Click to collapse
Again, I was talking about modern phones (like the HTC One), which are designed to be multi network and multi frequency global phones by default. HTC makes three versions of the phone: UMTS/GSM Only (MDM8215), UMTS/GSM+LTE (MDM9215), CDMA + UMTS/GSM +LTE (MDM9615). Sprint sells the version using the MDM9615 chipset which supports CDMA + UMTS/GSM + LTE. The Sprint variant has the capabilities to support all of the US/Canada frequencies, but I don't know what would be required to activate non Sprint frequencies. Neither do you. It's foolish to make grand pronouncements stating what is or isn't possible with phones until someone has actually attempted something.
Regarding your antenna statement, the HTC One has three antennas, one for WiFi and BT and two for wireless. The phone selects the best antenna to use in any given situation.
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d2kplus said:
Again, I was talking about modern phones (like the HTC One), which are designed to be multi network and multi frequency global phones by default. HTC makes three versions of the phone: UMTS/GSM Only (MDM8215), UMTS/GSM+LTE (MDM9215), CDMA + UMTS/GSM +LTE (MDM9615). Sprint sells the version using the MDM9615 chipset which supports CDMA + UMTS/GSM + LTE. The Sprint variant has the capabilities to support all of the US/Canada frequencies, but I don't know what would be required to activate non Sprint frequencies. Neither do you. It's foolish to make grand pronouncements stating what is or isn't possible with phones until someone has actually attempted something.
Regarding your antenna statement, the HTC One has three antennas, one for WiFi and BT and two for wireless. The phone selects the best antenna to use in any given situation.
MY EDIT: REMOVED IMAGE.
More info here
Click to expand...
Click to collapse
I think you're a little confused on exactly what we're talking about here. Yes, you're absolutely right that the Sprint HTC One possess all the necessary ingredients to operate on just about any network/carrier in the world--GSM or CDMA. And, actually, I do know what's required in order to it to happen. For a GSM network, the only requirements to do so is a correctly provisioned SIM cards and the applicable access point names for the network you're trying to utilize. I've personally taken an CDMA world device and used it on a GSM network(VZW iPhone 5 on Straight Talk/AT&T). The Sprint HTC One would even work on Verizon, provided you get the ESN added to the master database of approved devices which is highly unlikely. Source: I worked for Verizon Wireless. Other CDMA carriers like MetroPCS, PagePlus, Cricket, etc do not have this requirement and it's relatively easy to flash Sprint/VZW phones over to their network.
But that's not at all what's being debated. WiFi and Bluetooth likewise have nothing to do with this conversation. As you've correctly noted, the MDM9215M chipset(step 10, highlighted in green) which powers the wireless antennae and allows them to connect to cellular networks does not support CDMA in the AT&T/T-Mobile/International version of the phone. Because of this fact alone, regardless of software configuration, these phones will never operate on a CDMA network. Now if you're an enterprising individual and decide to open your phone, remove the chip, and replace it with one that does support CDMA... you'd still run into the issue of the master database.
EDIT: I removed the image just to clean up the look of the post.
unremarked said:
Sort of, sort of. You're going in the right path, but still not quite there. Hardware is still very important.
GSM phones are considered world phones because most of the networks operated in foreign countries run on GSM, right. CDMA world phones possess both antennae in order to access the networks over seas, but GSM phones don't have CDMA antennaes because... well, they don't need them. Your chances of going to a CDMA-only country is so very small that it's not worth while to make the investment. Let's take the opposite example using the iPhone 5: You can't take an AT&T/T-Mobile/International iPhone 5 and put in a Sprint SIM card. You can even do a iTunes restore using the Sprint IPSW onto that phone(actually don't know if that would work or not, but I digress) and it STILL won't get a signal because it physically lacks the antennae.
Click to expand...
Click to collapse
unremarked said:
I think you're a little confused on exactly what we're talking about here. Yes, you're absolutely right that the Sprint HTC One possess all the necessary ingredients to operate on just about any network/carrier in the world--GSM or CDMA. And, actually, I do know what's required in order to it to happen. For a GSM network, the only requirements to do so is a correctly provisioned SIM cards and the applicable access point names for the network you're trying to utilize. I've personally taken an CDMA world device and used it on a GSM network(VZW iPhone 5 on Straight Talk/AT&T). The Sprint HTC One would even work on Verizon, provided you get the ESN added to the master database of approved devices which is highly unlikely. Source: I worked for Verizon Wireless. Other CDMA carriers like MetroPCS, PagePlus, Cricket, etc do not have this requirement and it's relatively easy to flash Sprint/VZW phones over to their network.
But that's not at all what's being debated. WiFi and Bluetooth likewise have nothing to do with this conversation. As you've correctly noted, the MDM9215M chipset(step 10, highlighted in green) which powers the wireless antennae and allows them to connect to cellular networks does not support CDMA in the AT&T/T-Mobile/International version of the phone. Because of this fact alone, regardless of software configuration, these phones will never operate on a CDMA network. Now if you're an enterprising individual and decide to open your phone, remove the chip, and replace it with one that does support CDMA... you'd still run into the issue of the master database.
EDIT: I removed the image just to clean up the look of the post.
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The ESN information for LTE enabled smartphones is included on the SIM/UICC/R-UIM rather than the phone itself, so the issue is one of provisioning a given phone's capabilities to work on the VZW vs the Sprint network. I don't know if this is user configurable or if carriers would be willing to do.
Regarding the antennas, the same antenna configuration is used on all models. There is no additional antenna on the CDMA capable model. That functionality is provided by the Qualcomm MDM9615. It's a bit unfortunate that HTC didn't take Apple's approach in using the MDM9615 on all HTC One variants. I assume that VZW's decision to pass on the phone may have had something to do with it.
Now back to your original point, I was mistaken and you are correct. While the Sprint version could potentially be used on AT&T, T-Mobile and Verizon. The AT&T (UMTS/GSM+LTE) version cannot be used on the Verizon network, and that's a damn shame.
unremarked said:
It's not possible, period. Sprint and Verizon operate on CDMA networks, whereas AT&T and T-Mobile operate on GSM. As long as the proper frequencies are supported, any GSM phone can run on any GSM network provided they're SIM unlocked.
4GLTE is currently only used by Verizon for data connections, and not for voice/text--that relies on the 3G CDMA antennae. The same goes for Sprint. The AT&T/T-Mobile-/International HTC One does not physically possess an CDMA atennae. Now before you get youSprint
esopes up about using a Sprint phone on Verizon, here's another little wrinkle. As you know, every phone has a serial number. That serial number is known as the IMEI on GSM carriers, and ESN on CDMA carriers. Both Verizon and Sprint operate a massive list of ESNs for everyone phone that can operate on their network. If your ESN is not found on that list, then you cannot activate it on that particular network period, paragraph, end of story. Do not pass go, do not collect $200.
Things get a little murkier with CDMA when it comes to flashing the radios over to other CDMA carriers, but you're looking at services like MetroPCS, PagePlus, etc and that's outside my realm of expertise.
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IMEI/ESN is carrier specific. Can't be changed. However can't we trick the phone itself through software to unlock the capability of using a Verizon LTE Sim in a Sprint phone. Flash a Verizon ROM? Sprint and Verizon are the exact same CDMA/LTE band, same internal hardware.
Speaking only of using a Verizon LTE sim for data on a Sprint device. I have a Sprint One. Not with Sprint any longer. Want to use my device as a PDA, internet capable.
I was having issues with my Mk III answering and making calls, I figured I would try a new Sim. They refused saying that AT&T has a approved list of phones they will allow to be used due to the 3G going away. Has anyone heard about thid
Audiguy3 said:
I was having issues with my Mk III answering and making calls, I figured I would try a new Sim. They refused saying that AT&T has a approved list of phones they will allow to be used due to the 3G going away. Has anyone heard about thid
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Check the AT&T whitelist for your model, if it's listed, it's supported.
First mistake is ever using ATT, go with T-mobile, Verizon, or a reseller like Mint or straight talk.
JDC2389 said:
First mistake is ever using ATT, go with T-mobile, Verizon, or a reseller like Mint or straight talk.
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AT&T is working fine, seamlessly for my 2 N10+'s; N975U, N975U1. Didn't have to do anything after the switch over. Your device wasn't configured for or running on 4G VoLTE and that's the issue.
Audiguy3 said:
I was having issues with my Mk III answering and making calls, I figured I would try a new Sim. They refused saying that AT&T has a approved list of phones they will allow to be used due to the 3G going away. Has anyone heard about thid
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Click to collapse
Sending you a new SIM would be pointless 'cause your phone is 3G only and AT&T no longer has a 3G network.
It doesn't work well with T-Mobile either. It's using standalone 5G channel combos even though Sony disabled standalone 5G for all US bands. The end result is lots of signal drops because it has long-range NR 71 but lost the medium range LTE band 2 or 66 it needs. It takes it a few minutes to switch to LTE 71 or LTE 12.
I am on VZW and 5G works great. Only once have I seen it change to LTE and that was because of weather. It sound like the ATT person you talked to was assuming you were on a 3G phone, and there not going to give a sim card for a 3G phone. The system is going away.
kevinmcmurtrie said:
It doesn't work well with T-Mobile either. It's using standalone 5G channel combos even though Sony disabled standalone 5G for all US bands. The end result is lots of signal drops because it has long-range NR 71 but lost the medium range LTE band 2 or 66 it needs. It takes it a few minutes to switch to LTE 71 or LTE 12.
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I wonder if you have a defective phone...or you live in an area where the signal towers are too far away???
I realize that this phone "needs" to have NSA or NSA+SA mode turned on to receive 5G on T-Mobile. However, I have none of the signal issues or drops that you are having. Something is wrong with your device specifically.
jaseman said:
I wonder if you have a defective phone...or you live in an area where the signal towers are too far away???
I realize that this phone "needs" to have NSA or NSA+SA mode turned on to receive 5G on T-Mobile. However, I have none of the signal issues or drops that you are having. Something is wrong with your device specifically.
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It's as designed:
Sony Xperia 1 III (US) (XQ-BC62) | 4G/5G Bands & Combos
4G & 5G Bands, Carrier Aggregation and Dual Connectivity Combinations for Sony Xperia 1 III (US) (XQ-BC62)
cacombos.com
Sony is using the wrong long-range band for the sake of turning on the 5G indicator. It should be using LTE 66 + LTE 12.
I have a SA 5G phone for comparison and it has a far faster and more stable signal. I bring it when I hike or travel.
kevinmcmurtrie said:
It's as designed:
Sony Xperia 1 III (US) (XQ-BC62) | 4G/5G Bands & Combos
4G & 5G Bands, Carrier Aggregation and Dual Connectivity Combinations for Sony Xperia 1 III (US) (XQ-BC62)
cacombos.com
Sony is using the wrong long-range band for the sake of turning on the 5G indicator. It should be using LTE 66 + LTE 12.
I have a SA 5G phone for comparison and it has a far faster and more stable signal. I bring it when I hike or travel.
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This Sony model is whitelisted...
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Thanks for the link to the att website that listed the Sony phones as not being affected by the 3G closure. I went back in and they acknowledged that the phone was OK but could not get the new Sim card to work on their tablet . I got them to call AT&T tech support and though he had trouble initially got it activated. The new Sim seems faster and so far has not stopped working. The old Sim card if I remember was from my previous phone a Experia 1 Mk II. My MK III is from Best Buy (unlocked} and not a international model.
Yes I know this phone does not work with most of AT&T 5G network. Their 4G is pretty fast and with my travel in the past I have loved their network throughout the country.
Audiguy3 said:
Thanks for the link to the att website that listed the Sony phones as not being affected by the 3G closure. I went back in and they acknowledged that the phone was OK but could not get the new Sim card to work on their tablet . I got them to call AT&T tech support and though he had trouble initially got it activated. The new Sim seems faster and so far has not stopped working. The old Sim card if I remember was from my previous phone a Experia 1 Mk II. My MK III is from Best Buy (unlocked} and not a international model.
Yes I know this phone does not work with most of AT&T 5G network. Their 4G is pretty fast and with my travel in the past I have loved their network throughout the country.
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You're welcome.
I don't have a 5G model either. I deliberately got the 4G for better battery life... 4G is fast enough today.
lewmur said:
Sending you a new SIM would be pointless 'cause your phone is 3G only and AT&T no longer has a 3G network.
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Wtf you're talking about?! 1 III is a 3G only phone? you're just kidding, right?! I hope so!
LaceeWearsPrada said:
Wtf you're talking about?! 1 III is a 3G only phone? you're just kidding, right?! I hope so!
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Sorry. I replied to the wrong post. If your phone isn't in the list of phones you'll find in post #2, then they won't send a new SIM. And I don't know what model "1 III" refers to, so I can't check it.
lewmur said:
Sorry. I replied to the wrong post. If your phone isn't in the list of phones you'll find in post #2, then they won't send a new SIM. And I don't know what model "1 III" refers to, so I can't check it.
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You're in the forum of that model why are you even here when you have no idea what's Xperia 1 III?!