?SIM Unlocked Sprint S6 on T-Moile? - Galaxy S6 Edge Q&A, Help & Troubleshooting

OK Question:
I have been trying to find reliable information on this specific question for quite some time.. I am wondering two things:
How well will a Sprint Samsung S6 work unlocked on T-Mobile? I was comparing Basebands or bands or whatever and it has most of the LTE bands but none of the 3G bands. Does that mean that IF I was in a place where LTE was not available that it wouldn't be able to connect to 3G? How well would this work?
Thanks

beforedenied said:
OK Question:
I have been trying to find reliable information on this specific question for quite some time.. I am wondering two things:
How well will a Sprint Samsung S6 work unlocked on T-Mobile? I was comparing Basebands or bands or whatever and it has most of the LTE bands but none of the 3G bands. Does that mean that IF I was in a place where LTE was not available that it wouldn't be able to connect to 3G? How well would this work?
Thanks
Click to expand...
Click to collapse
3G will work.
Sent from my Nexus 5 using Tapatalk

optimummind said:
3G will work.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Ok Please give me more information. how well will it work? Perfectly all the time?

If you are in the United States, by law the carrier cannot "lock" a phone to be only activated by their own network. You may have to call them to get it unlocked though. They may request for you to pay off the ETF on it, which is usually the remaining balance of the discounted phone on contract.
So really there is no such thing as a locked phone anymore, at least not for now. The hardware on the Samsung S6 should be the same for all carriers, the only difference should be the SIM card.

Related

t-mobile?

Will this work on T-mobile?
Is galaxy nexus best phone on t-mobile now?
Only BC of ICS. THE GS2 is better except screen Res.....I was disappointed in my gnex.....I think even my rezound is better
Edit: the unlocked works on T-Mo.....
Sent from my ADR6425LVW using XDA
ksizzle9 said:
Only BC of ICS. THE GS2 is better except screen Res.....I was disappointed in my gnex.....I think even my rezound is better
Edit: the unlocked works on T-Mo.....
Sent from my ADR6425LVW using XDA
Click to expand...
Click to collapse
Relivent much i don't think so .. it couldci know.some.cdma work on gsm
Sent from my SGH-T989 using XDA
*snip*
dlb92 said:
Will this work on T-mobile?
Is galaxy nexus best phone on t-mobile now?
Click to expand...
Click to collapse
check back on November 2012, they always release new (old flagship international quad band model of the same phone as) AWS 1700 phone at that time of the year
Does the phone have both the 1700 and 2100 bands, cant find a real spec list.
Thanks
trilaxx said:
Does the phone have both the 1700 and 2100 bands, cant find a real spec list.
Thanks
Click to expand...
Click to collapse
Here are some websites. I was looking for the same thing.
http://gdgt.com/samsung/galaxy/s/iii/specs/
https://negrielectronics.com/samsun...nlocked-pebble-blue.html#.T6Ldklc6aUs.twitter
Ya i saw both those sites, not that i dont trust them just they may be worng.
The UNPACKED app says:
3g (hspa+ 21mbpa): 850/900/1900/2100
Click to expand...
Click to collapse
Which contradicts many websites which say 1700 will be included. Really hope Samsung's app is wrong...
saltmine said:
The UNPACKED app says:
Which contradicts many websites which say 1700 will be included. Really hope Samsung's app is wrong...
Click to expand...
Click to collapse
I'm really hoping that is wrong as well. Would love to use this beast on Tmobile!
Excuse the noobish question, but to make sure I have this right - You need both 1700 and 2100 bands for the 3g or 4g to work at all, correct? Was looking into buying it once its released but that may be a deal breaker if no speedy internet.
Twisted Tom said:
I'm really hoping that is wrong as well. Would love to use this beast on Tmobile!
Excuse the noobish question, but to make sure I have this right - You need both 1700 and 2100 bands for the 3g or 4g to work at all, correct? Was looking into buying it once its released but that may be a deal breaker if no speedy internet.
Click to expand...
Click to collapse
Yes, you need both, or you will be stuck using EDGE if you are on T-Mobile US.
I want to know the same, if the intentional version will surely work on Tmobile.
Sent from my GT-P7510 using xda premium
I'd like to know about that as well
I think everyone here just wants to know when the hell it'll be coming out to our own carriers. I need a new phone but I'm not waiting until Fall for one.
Doesn't t-mobile uses the 1700/2100 for 3G and 2100 for 4G? so it would be EDGE and 4G.
So your implying that 4g will in fact work? I thought you needed both bands for 4g to work.
I'm in the Philadelphia area and really need to know if this will work or not.
If I can get 4g, ill be preordering the phone asap. If not.... I'm still undecided.
nope, im asking if thats the case. i need to ask the dude that know, since he is the manager at the t-mo store if thats rite. but t-mo one should be coming out in month or two.
What T-Mobile calls 4G is really their 3G HPSA network. They have not yet rolled out LTE. So for you to get the T-Mo 3G, you need the phone to support 1700/2100 band, which I am not sure the international SIII model does, but I'm almost certain it does not. Therefore, you will only get 2G (EDGE) speed, which is around 10-15kilobytes per second download, good enough for web browsing and loading Google Maps, it's about 3 times faster than 56k modem.
The T-Mobile-locked model will support the HPSA+ 42Mbps speed and AT&T version will have LTE of course. Now whether if when this phone get released for T-Mobile and somehow it will preemptively support their future LTE service (launch in 2013), then that would be interesting (which inherently the hardware does support LTE due to the Qualcomm S4 chip to be used in American models). What I predict they will do is like with the Galaxy Vibrant -> Galaxy S 4G, so first release the HSPA+ only version, then release a slightly modified version that support LTE.
http://www.samsungmobilepress.com/2012/05/04/GALAXY-S-III
If this doesn't confirm lack of 1700, nothing does.
So basically, count on the international version not being usable (besides EDGE) on T-mobile. You'll have to wait for them to up with their own version.
thebobp said:
http://www.samsungmobilepress.com/2012/05/04/GALAXY-S-III
If this doesn't confirm lack of 1700, nothing does.
So basically, count on the international version not being usable (besides EDGE) on T-mobile. You'll have to wait for them to up with their own version.
Click to expand...
Click to collapse
Dammit why does T-mobile use such obscure frequencies!

[Q] i9300 and Straight Talk

Any US owners of the i9300 (that's the non-US/International) version of the S3 using the Straight Talk service? I've been looking into them as a way to get some 3G data access for two weeks, but their customer service folks just replied saying that my S3 won't work because it's not a US model.
Looking at the specs seems to show that my S3 will support their frequencies, but I'm wondering if there's some kind of clever device block in place.
bluebobx said:
Any US owners of the i9300 (that's the non-US/International) version of the S3 using the Straight Talk service? I've been looking into them as a way to get some 3G data access for two weeks, but their customer service folks just replied saying that my S3 won't work because it's not a US model.
Looking at the specs seems to show that my S3 will support their frequencies, but I'm wondering if there's some kind of clever device block in place.
Click to expand...
Click to collapse
I'm using it, it works fine. You need to choose AT&T-Compatible SIM when you buy a SIM, otherwise most of the time they'll send you a T-Mobile SIM if you choose for them to pick it automatically. Also, this wouldn't affect whether or not you get 3G/HSPA+, but make sure when you fill in the APN, you don't fill in any proxy information except for MMS proxy.
Product F(RED) said:
I'm using it, it works fine. You need to choose AT&T-Compatible SIM when you buy a SIM, otherwise most of the time they'll send you a T-Mobile SIM if you choose for them to pick it automatically. Also, this wouldn't affect whether or not you get 3G/HSPA+, but make sure when you fill in the APN, you don't fill in any proxy information except for MMS proxy.
Click to expand...
Click to collapse
Many thanks. :good: I think their CS folks are about as good as the ones for the carriers over here - since their emailed advice contradicts what the website says:
BRING AN AT&T OR T-MOBILE COMPATIBLE GSM PHONE, OR AN UNLOCKED GSM PHONE
Make sure it operates on our compatible frequencies (850 and 1900 MHz)
Click to expand...
Click to collapse
And according to http://www.samsung.com/uk/consumer/mobile-devices/smartphones/android/GT-I9300MBDBTU-spec the International (UK spec in my case) S3 supports "850 / 900 / 1900 / 2100".
Again, thanks for taking the time out to reply. Maybe see if I can use a local Walmart's click n' collect service to get the SIM+minutes card when I get over to Orlando.
edge
bluebobx said:
Many thanks. :good: I think their CS folks are about as good as the ones for the carriers over here - since their emailed advice contradicts what the website says:
And according to http://www.samsung.com/uk/consumer/mobile-devices/smartphones/android/GT-I9300MBDBTU-spec the International (UK spec in my case) S3 supports "850 / 900 / 1900 / 2100".
Again, thanks for taking the time out to reply. Maybe see if I can use a local Walmart's click n' collect service to get the SIM+minutes card when I get over to Orlando.
Click to expand...
Click to collapse
Has anyone done this with an i9300 and gotten anything othere than 2.5g edge?
electrojas said:
Has anyone done this with an i9300 and gotten anything othere than 2.5g edge?
Click to expand...
Click to collapse
Accidentally thanked you.
Yes, you have to make sure the SIM card isn't for T-Mobile's network. Until recently Straight Talk was only offering this SIM, so your best bet would be to buy an AT&T compatible SIM from their website.
Sent from my GT-I9300 using Tapatalk
att sim.
Shakes27 said:
Accidentally thanked you.
Yes, you have to make sure the SIM card isn't for T-Mobile's network. Until recently Straight Talk was only offering this SIM, so your best bet would be to buy an AT&T compatible SIM from their website.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Thats what I did. I put an att compatible gsm sim in a locked Verizon gs3 assigned apn settings but it will at best go on edge. Never 3 or 4g
This is a stock 4.1.2 jb untouched no root nothin. I was under the same assumption that it would work. but Nada. any widom from the masters here?
electrojas said:
Thats what I did. I put an att compatible gsm sim in a locked Verizon gs3 assigned apn settings but it will at best go on edge. Never 3 or 4g
This is a stock 4.1.2 jb untouched no root nothin. I was under the same assumption that it would work. but Nada. any widom from the masters here?
Click to expand...
Click to collapse
<rant> Verizon and att use different networks, that will never work, especially with a LOCKED phone. Also, this is the forum for the international s3 (i9300), not the verizon s3. </rant>
Pick up the straight talk activation kit, Verizon uses CDMA signal, not GSM.
Sent from my GT-I9300 using Tapatalk
Shakes27 said:
<rant> Verizon and att use different networks, that will never work, especially with a LOCKED phone. Also, this is the forum for the international s3 (i9300), not the verizon s3. </rant>
Pick up the straight talk activation kit, Verizon uses CDMA signal, not GSM.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
The Verizon S3 supports GSM though (their LTE devices from the Rezound [2010 or 11] onwards do). Their LTE devices also come factory unlocked out of the box due to a deal that Verizon made with the FCC in order to be able to use the 750 MHz LTE spectrum. Long story short, Verizon LTE devices will get EDGE and HSPA+ (no LTE) on AT&T. It supports the same bands as the i9300.
Product F(RED) said:
The Verizon S3 supports GSM though (their LTE devices from the Rezound [2010 or 11] onwards do). Their LTE devices also come factory unlocked out of the box due to a deal that Verizon made with the FCC in order to be able to use the 750 MHz LTE spectrum. Long story short, Verizon LTE devices will get EDGE and HSPA+ (no LTE) on AT&T. It supports the same bands as the i9300.
Click to expand...
Click to collapse
I had no idea, last Verizon phone I had was the OG Incredible. Thanks for the info good sir.
Sent from my GT-I9300 using Tapatalk

[Q] Rooted. Edge only. Special case here

Long story short, I rooted using the Exynos Abuse and flashed the SuperNexus I777 ROM and am only getting EDGE.
My friend gave me his ATT Galaxy S2 SGH-1777. I have a local carrier that also uses GSM. So I have a non-ATT SIM card.
When I plugged in the SIM card to this ATT SGS2, only the texting and dialing worked. I didn't get any data. I talked to ATT for an unlock code (which they gave me). It wasn't until after I got the unlock code that I found out the phone was already GSM unlocked.
So I proceeded to root and flash the ROM I listed above. I am only getting EDGE data. Wifi works and as far as I know (with the minimal poking around) everything else does so far.
Am I missing something in terms of toggle switches inside the settings menu to turn on EDGE? Is this carrier specific? I don't see why EDGE would work but 3G wouldn't if I am in the coverage area.
I am doing this for a friend. I am a HTC Thunderbolt user so the SGS2 is new to me. What are these modems people are flashing? Should I flash one of these in hopes of picking up a 3G signal through the Non-ATT carrier?
zilla. said:
Long story short, I rooted using the Exynos Abuse and flashed the SuperNexus I777 ROM and am only getting EDGE.
My friend gave me his ATT Galaxy S2 SGH-1777. I have a local carrier that also uses GSM. So I have a non-ATT SIM card.
When I plugged in the SIM card to this ATT SGS2, only the texting and dialing worked. I didn't get any data. I talked to ATT for an unlock code (which they gave me). It wasn't until after I got the unlock code that I found out the phone was already GSM unlocked.
So I proceeded to root and flash the ROM I listed above. I am only getting EDGE data. Wifi works and as far as I know (with the minimal poking around) everything else does so far.
Am I missing something in terms of toggle switches inside the settings menu to turn on EDGE? Is this carrier specific? I don't see why EDGE would work but 3G wouldn't if I am in the coverage area.
I am doing this for a friend. I am a HTC Thunderbolt user so the SGS2 is new to me. What are these modems people are flashing? Should I flash one of these in hopes of picking up a 3G signal through the Non-ATT carrier?
Click to expand...
Click to collapse
What carrier are u on? If u are accessing other towers besides at&t then u will pretty much get edge
Sent from my Pink Unicorn stable
brandonarev said:
What carrier are u on? If u are accessing other towers besides at&t then u will pretty much get edge
Sent from my Pink Unicorn stable
Click to expand...
Click to collapse
The carrier is Cincinnati Bell. Is it possible to get the phone to pick up towers specific for Bell or do I need the carrier to do this?
zilla. said:
The carrier is Cincinnati Bell. Is it possible to get the phone to pick up towers specific for Bell or do I need the carrier to do this?
Click to expand...
Click to collapse
I'm pretty sure Cincinnati Bell uses T-Mobile towers so all the limitations that T-Mobile had with At&t phones on its network applies here
Sent from my Nexus 7 using Tapatalk HD
Pirateghost said:
I'm pretty sure Cincinnati Bell uses T-Mobile towers so all the limitations that T-Mobile had with At&t phones on its network applies here
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
^^This! Confirm what network your carrier is accessing. If it's T-Mobile you're out of luck
Sent from my Pink Unicorn stable
brandonarev said:
^^This! Confirm what network your carrier is accessing. If it's T-Mobile you're out of luck
Sent from my Pink Unicorn stable
Click to expand...
Click to collapse
If the phone is GSM unlocked, should it be able to access the respective tower of the carrier that is tied to the SIM card?
If not can the radios (?) specifically select towers?
zilla. said:
If the phone is GSM unlocked, should it be able to access the respective tower of the carrier?
Click to expand...
Click to collapse
Not if the phone doesn't have the hardware to support those specific bands.
Sent from my Zanpakuto using Getsuga Tensho!
zilla. said:
If the phone is GSM unlocked, should it be able to access the respective tower of the carrier?
Click to expand...
Click to collapse
Yes. Your phone is GSM unlocked; therefore it can access the Cincinnati Bell towers. However, since those are actually T-Mobile towers, you can only use T-Mobile bands. Since T-Mobile and AT&T used different bands for 3G, and the phone's radio is designed to use AT&T's bands, you can only access the 2G bands.
EDIT: Ninja'd
mattdm said:
Yes. Your phone is GSM unlocked; therefore it can access the Cincinnati Bell towers. However, since those are actually T-Mobile towers, you can only use T-Mobile bands. Since T-Mobile and AT&T used different bands for 3G, and the phone's radio is designed to use AT&T's bands, you can only access the 2G bands.
EDIT: Ninja'd
Click to expand...
Click to collapse
Thank you for the insight. I will call to confirm.
some of the newer tablets have both bands built in....so then you could use both gsm bands on tmo and att.....like the new note 8....it will have more gsm and lte bands than those in the past
mokokawi said:
some of the newer tablets have both bands built in....so then you could use both gsm bands on tmo and att.....like the new note 8....it will have more gsm and lte bands than those in the past
Click to expand...
Click to collapse
thanks for this insightful post that has ZERO to do with the i777.....
mattdm said:
Yes. Your phone is GSM unlocked; therefore it can access the Cincinnati Bell towers. However, since those are actually T-Mobile towers, you can only use T-Mobile bands. Since T-Mobile and AT&T used different bands for 3G, and the phone's radio is designed to use AT&T's bands, you can only access the 2G bands.
EDIT: Ninja'd
Click to expand...
Click to collapse
Sorry for bringing this up again, I was looking at the specs of the SGH-I777 (ATT's SGS2) vs SGH-T989 (T-Mobile's SGS2). It looks like both of the phones use the same bands except T-Mobile is capable of one more: WCDMA 2100. Is this the band that T-Mobile transmits it's 3G over? Otherwise they look almost identical.
Attached screenshot of comparison: http://imgur.com/8OQXftD
T-Mobile utilizes AWS (1700 MHz) band. Look better and you'll see that what you marked isn't a difference, 1700 is.
Google "List of UMTS networks".
Jack_R1 said:
T-Mobile utilizes AWS (1700 MHz) band. Look better and you'll see that what you marked isn't a difference, 1700 is.
Google "List of UMTS networks".
Click to expand...
Click to collapse
Oh of course. I glanced over that way too fast. Thanks.

Verizon Samsung Galaxy S4 to have AWS 4 Band (Tmobile LTE Capable?)

Hi,
So I've read the FCC documents located here: LINK
Page 1 and Page 5 are the most interesting! These state that the Verizon model SCH-i545 will have AWS band 4 (of course 13 too) which does support T-mobiles LTE network right? It never states 1700/1200 frequencies.
Thing I want to know from the pros is will this phone indeed offer LTE support for T-Mobile or and I'm just seeing things?
Also, for all the other people that are wondering if the ATT model will offer LTE support for T-Mobile as well? It will since it supports both bands 4 and 17 But wait is that AWS band 4?... the jury is out on that! -_-
Many Thanks
Becool0130 said:
Hi,
So I've read the FCC documents located here: LINK
Page 1 and Page 5 are the most interesting! These state that the Verizon model SCH-i545 will have AWS band 4 (of course 13 too) which does support T-mobiles LTE network right? It never states 1700/1200 frequencies.
Thing I want to know from the pros is will this phone indeed offer LTE support for T-Mobile or and I'm just seeing things?
Also, for all the other people that are wondering if the ATT model will offer LTE support for T-Mobile as well? It will since it supports both bands 4 and 17 But wait is that AWS band 4?... the jury is out on that! -_-
Many Thanks
Click to expand...
Click to collapse
If I am correct, Verizon phones do not use sim cards (CDMA) and AT&T and T-Mobile are GMS (sim phones). So even if the bands are supported, I don't see how a Verizon phone would work on T-Mobile or AT&T unless they are CDMA / GSM dual phones. And even then they would have to be unlocked.
scott14719 said:
If I am correct, Verizon phones do not use sim cards (CDMA) and AT&T and T-Mobile are GMS (sim phones). So even if the bands are supported, I don't see how a Verizon phone would work on T-Mobile or AT&T unless they are CDMA / GSM dual phones. And even then they would have to be unlocked.
Click to expand...
Click to collapse
All of the major Verizon releases over the past year have come GSM unlocked. They are world phones that contain GSM and CDMA radios. I'm using a Verizon iPhone 5 on the Straight Talk (AT&T) network currently.
All lte phones have sim cards as it is a gsm technology. My girls verizon gs3 has a sim. As far as it being compatible that is a hell of a question.
OneStepAhead said:
All of the major Verizon releases over the past year have come GSM unlocked. They are world phones that contain GSM and CDMA radios. I'm using a Verizon iPhone 5 on the Straight Talk (AT&T) network currently.
Click to expand...
Click to collapse
Yes! I sold my iPhone 4s to get Samsung galaxy s4 and it sold to someone over in the UK world (Ireland) that says it works! Lol.
I've also seen threads about sim unlocking the Verizon S3 for domestic and international use. Some people use HiAPN as system app along with other steps and viola... Working on whatever network you want
Question is... Am I seeing right that Verizon S4 will support AWS Band 4 for t-mobile?
Sent from my SGH-T959 using xda app-developers app
good news
OneStepAhead said:
All of the major Verizon releases over the past year have come GSM unlocked. They are world phones that contain GSM and CDMA radios. I'm using a Verizon iPhone 5 on the Straight Talk (AT&T) network currently.
Click to expand...
Click to collapse
Hey this is one question i have lingering on my mind. How is the StraightTalk connection? Is it any good? Are there call drop issues? And do they have data plans?
if i buy a tmobile s4 will it work on verizon??
I know most things are under the catagory of speculation/rumor but i was wanting to to check out tmobile network for a bit.... the no contract is appealing. If i bought the phone outright and ending up not liking tmobile i would switch to verizon. Short of selling the tmobile and getting a verizon phone i was wondering about just activating the same phone on verizon?
Will there be "one phone" in US or would they all have thier own modem chips i guess is the real question....
thanks for the guesses and speculat'n!
You have to consider its Verizon and they have 700Mhz LTE and you can't roam on AT&T's 700Mhz so I would not expect to access Verizons AWS spectrum on T-Mobile or vice versa. Remember when they said LTE was the unifying spectrum to allow for easier use across networks and carriers, well that was a pile of BS.
Great news, but I heard verizon was purposely going to burn in their logo onto the amoled screens.
RaptorMD said:
You have to consider its Verizon and they have 700Mhz LTE and you can't roam on AT&T's 700Mhz so I would not expect to access Verizons AWS spectrum on T-Mobile or vice versa.
Click to expand...
Click to collapse
Wrong: those "700mhz" frequencies are different bands. Both T-Mobile and Verizon are building out LTE on the same band: 4 (AWS). They will be interoperable device-wise.
AT&T also owns a lot of AWS, and though they're currently running LTE on it only in one market (somewhere in Oklahoma IIRC), all their LTE devices do come with band 4 enabled.
The more I read about the differences, the more I'm convinced that the Verizon model is more cross compatible with all other services. It's still the only CDMA model. But it's also gsm unlocked if you know how to program APNs. Any thoughts?
jerzyboy2421 said:
The more I read about the differences, the more I'm convinced that the Verizon model is more cross compatible with all other services. It's still the only CDMA model. But it's also gsm unlocked if you know how to program APNs. Any thoughts?
Click to expand...
Click to collapse
I posted a pretty detailed analyzation of the LTE bands the different GS4 models work with here: http://forum.xda-developers.com/showthread.php?p=40974831#post40974831
if we ever get to the point where we don't need 3g at all any more (CDMA) and we can get VoLTE and use the LTE band exclusively that will eliminate a lot of the incompatability between Verizon and GSM carriers .
Parafly said:
if we ever get to the point where we don't need 3g at all any more (CDMA) and we can get VoLTE and use the LTE band exclusively that will eliminate a lot of the incompatability between Verizon and GSM carriers .
Click to expand...
Click to collapse
When we get to that point, Verizon will basically be a GSM carrier. Considering LTE is just an evolution GSM, both developed by 3GPP.
camaroz28 said:
When we get to that point, Verizon will basically be a GSM carrier. Considering LTE is just an evolution GSM, both developed by 3GPP.
Click to expand...
Click to collapse
When it gets to that point, the question is will LTE then become open so Google can sell a Nexus that works on every network without carriers involved?
Schoat333 said:
When it gets to that point, the question is will LTE then become open so Google can sell a Nexus that works on every network without carriers involved?
Click to expand...
Click to collapse
Not just Google...all the manufacturers could do it. But...don't get your hopes up. That situation is not in the carriers' nor major manufacturers' interests, and they sit on the standards bodies. No one represents the users/customers.
Sent from my SCH-I545 using xda premium
http://forum.xda-developers.com/showpost.php?p=43469207&postcount=11
samsung GS4
scott14719 said:
If I am correct, Verizon phones do not use sim cards (CDMA) and AT&T and T-Mobile are GMS (sim phones). So even if the bands are supported, I don't see how a Verizon phone would work on T-Mobile or AT&T unless they are CDMA / GSM dual phones. And even then they would have to be unlocked.
Click to expand...
Click to collapse
Verizon does use sim cards I am in the process of trying to unlock
SCH-I545 On T-Mobile
i Have This phone running on T-Mobile and have notice it does pick up AWS but very limied when compared to a T-Mobile branded phone... im wondering if anyone has tested flashing the T-Mobile modem??
---------- Post added at 04:58 AM ---------- Previous post was at 04:56 AM ----------
No need to unlock just go into settings on the phone and under mobile networks their should be a tab that says prefered network.... click it and select global....

Will this work? Verizon M8 --> AT&T fo-'official'?

I have an old M8 lying around that I fired up and had remembered I had rooted it and the bootloader is unlocked.. Is there a way to 'trick' this phone into thinking it's an AT&T branded phone? hboot, etc. and that will allow me to RUU something official from AT&T? I know this sounds really strange and probably stupid but.. I just can't sleep and need something to fill the time.. Can I do it?
Don't think so, radio hardware is different, not to mention the partition layout.
Sent from my HTC6525LVW using Tapatalk
jbarcus81 said:
Is there a way to 'trick' this phone into thinking it's an AT&T branded phone? hboot, etc. and that will allow me to RUU something official from AT&T? ?
Click to expand...
Click to collapse
Absolutely not. At least not any way that is known; and your chance of failure is high (with a brick being the possible or even probable result).
As mentioned in the previous comment, the partitioning on the phones is different. If you try to run the RUU, you at best it will fail, at worst it will brick the device.
Most other M8 versions (that don't support CDMA) can be "converted" from one version to another (other exceptions being dual SIM and M8 Eye). But Verizon and Sprint are the oddballs here. Some experienced devs have been messing around with these variants from the start (to try to convert them) with no success.
Perfect! All I needed to hear! Ah well.. it was worth a shot! Just trying to get my account provisioned for LTE so I can get LTE on my unlocked devices.. I've been told, and read, that if I can get an AT&T branded LTE capable phone to just swap my SIM in it.. and let my account provision, then I'll have LTE on any device AT&T or not... Just trying to avoid a contract..
jbarcus81 said:
I've been told, and read, that if I can get an AT&T branded LTE capable phone to just swap my SIM in it.. and let my account provision, then I'll have LTE on any device AT&T or not... Just trying to avoid a contract..
Click to expand...
Click to collapse
As long as the phone is SIM unlocked (Verizon version is) then you should just be able to put an AT&T SIM in, and enter the proper AT&T APN for service, as long as the phone supports the proper bands. Its irrelevant whether the phone is AT&T branded or not.
Now the underlined bit in the paragraph above is the main issue. The Verizon M8 only supports one of the four bands (Bands 2, 5, 4, and 17) used by AT&T for LTE (Verizon M8 supports Bands 3, 4, 7, and 13). So depending on what band is used in your area, you may or may not get LTE.
But GSM (2G) and HSPA (3G) should work just fine on AT&T.
redpoint73 said:
As long as the phone is SIM unlocked (Verizon version is) then you should just be able to put an AT&T SIM in, and enter the proper AT&T APN for service, as long as the phone supports the proper bands. Its irrelevant whether the phone is AT&T branded or not.
Now the underlined bit in the paragraph above is the main issue. The Verizon M8 only supports one of the four bands (Bands 2, 5, 4, and 17) used by AT&T for LTE (Verizon M8 supports Bands 3, 4, 7, and 13). So depending on what band is used in your area, you may or may not get LTE.
But GSM (2G) and HSPA (3G) should work just fine on AT&T.
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Click to collapse
That's the odd part.. My main phone is the S6 Edge from Verizon.. it's on the AT&T network and I assume my APN is correct.. But it's not picking up LTE and I am almost certain the S6 Edge from Verizon will pick up the correct band for AT&T LTE .. But it's only using the H+ speed.. What's even more strange?? When I throw my SIM into the M8? I get LTE on AT&T and verify with 30+mpbs speeds.. I have no idea what's going on...
jbarcus81 said:
That's the odd part.. My main phone is the S6 Edge from Verizon.. it's on the AT&T network and I assume my APN is correct.. But it's not picking up LTE and I am almost certain the S6 Edge from Verizon will pick up the correct band for AT&T LTE .. But it's only using the H+ speed.. What's even more strange?? When I throw my SIM into the M8? I get LTE on AT&T and verify with 30+mpbs speeds.. I have no idea what's going on...
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Click to collapse
Yeah, that is strange. According to the specs for the S6 Edge here, the Verizon version supports the same LTE bands as the VZN M8, and actually some additional bands (2 and 5) that also happen to be bands used by AT&T.
One thing I can think of, is that the VZN M8 in actuality supports some bands that are not advertised/explicit in the specs. It wouldn't be unheard of, as members here have reported some versions of the non-CDMA M8 as supporting some bands not indicated in the specs. And that band happens to be what AT&T is using in your market region. In this case, that band would seem to be Band 17 (the only band that AT&T is known to use, that isn't listed on the S6 Edge specs).
Or the other possibility, is there is just some issue with the S6 that is preventing connection to LTE (but on the same supported band that the M8 has).
redpoint73 said:
Yeah, that is strange. According to the specs for the S6 Edge here, the Verizon version supports the same LTE bands as the VZN M8, and actually some additional bands (2 and 5) that also happen to be bands used by AT&T.
One thing I can think of, is that the VZN M8 in actuality supports some bands that are not advertised/explicit in the specs. It wouldn't be unheard of, as members here have reported some versions of the non-CDMA M8 as supporting some bands not indicated in the specs. And that band happens to be what AT&T is using in your market region. In this case, that band would seem to be Band 17 (the only band that AT&T is known to use, that isn't listed on the S6 Edge specs).
Or the other possibility, is there is just some issue with the S6 that is preventing connection to LTE (but on the same supported band that the M8 has).
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Yeah.. I'm not worried about it.. I've been told that all I need is an AT&T branded LTE capable device hooked up to the account and that my account hasn't been provisioned for LTE .. I've seen this in a few places so it's worth a shot.. I ordered a junk LTE phone branded AT&T to test it out.. ordered a OnePlus 2 and will likely unload the S6 Edge (if it never picks up the LTE from AT&T)
jbarcus81 said:
I've been told that all I need is an AT&T branded LTE capable device hooked up to the account and that my account hasn't been provisioned for LTE ..)
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Click to collapse
As I've already mentioned, its not really necessary to have an AT&T branded device. I suspect the reason you've seen people say this, is that AT&T branding means by definition the phone has all the bands used by AT&T for LTE; since obviously the phone is intended for use on AT&T's network. Since AT&T uses a number of bands (4) and LTE bands being used worldwide has become very un-standardized, its somewhat difficult to find a non-AT&T phone that has all the bands. But they do exist, such as the US unlocked M8, Dev Edition M8, and Nexus devices. Also, I've seen folks used other non-ATT branded phones, which may not have all 4 LTE bands used by AT&T, but the one(s) needed in the particular user's region. Not ideal, but sufficient for some folks.
Another reason why some may say the phone needs to be AT&T branded, is that AT&T tech support won't provide you any support if you have a non-ATT phone. But honestly, I've used non-branded devices (and plenty of folks here have), and this is very rarely an issue. The folks here on XDA will usually provide you better support, anyway!
Of course, your ATT account needs to be provisioned for LTE in order to have that service. Its a simple matter, and doesn't cost anything (just need a smartphone data plan).
redpoint73 said:
As I've already mentioned, its not really necessary to have an AT&T branded device. I suspect the reason you've seen people say this, is that AT&T branding means by definition the phone has all the bands used by AT&T for LTE; since obviously the phone is intended for use on AT&T's network. Since AT&T uses a number of bands (4) and LTE bands being used worldwide has become very un-standardized, its somewhat difficult to find a non-AT&T phone that has all the bands. But they do exist, such as the US unlocked M8, Dev Edition M8, and Nexus devices. Also, I've seen folks used other non-ATT branded phones, which may not have all 4 LTE bands used by AT&T, but the one(s) needed in the particular user's region. Not ideal, but sufficient for some folks.
Another reason why some may say the phone needs to be AT&T branded, is that AT&T tech support won't provide you any support if you have a non-ATT phone. But honestly, I've used non-branded devices (and plenty of folks here have), and this is very rarely an issue. The folks here on XDA will usually provide you better support, anyway!
Of course, your ATT account needs to be provisioned for LTE in order to have that service. Its a simple matter, and doesn't cost anything (just need a smartphone data plan).
Click to expand...
Click to collapse
I've dug deeper and have to not only have an AT&T branded phone, I have to register the IEMI on my account, then swap the SIM card back into the other phone. I've got the phone but can't find a way to do this online so I'll have to call tomorrow...
Sent from my ONE A2005 using Tapatalk
I have a m8 whl sprint abd does not use CDMA only gsm network. I can I change the mid and convert the phone to get latest ota for dev edition version? I thanks
long.nguyen said:
I have a m8 whl sprint abd does not use CDMA only gsm network. I can I change the mid and convert the phone to get latest ota for dev edition version? I thanks
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Click to collapse
Absolutely NO.
What I mentioned above (Post #3) for the Verizon variant, also applies to Sprint (both versions support CDMA - the fact you don't use it is irrelevant). If you try to convert to another version won't work, and will probably result in a brick.
Also, even if you didn't have a CDMA version M8, you typically can't convert using an OTA, it has to be an RUU.
redpoint73 said:
Absolutely NO.
What I mentioned above (Post #3) for the Verizon variant, also applies to Sprint (both versions support CDMA - the fact you don't use it is irrelevant). If you try to convert to another version won't work, and will probably result in a brick.
Also, even if you didn't have a CDMA version M8, you typically can't convert using an OTA, it has to be an RUU.
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Click to collapse
@redpoint ; don't we have any chance to install different provider radios to Verizon Htc devices..?
because verizon devices you know that support 3, 4, 7, and 13 bands,but i want to enable band 20 for europe LTE..
pls help us to enable other bands =( because only u can do that as a genius =)
thanx a lot
cincon said:
@redpoint ; don't we have any chance to install different provider radios to Verizon Htc devices..?
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Absolutely NOT. As already thoroughly discussed on this thread, if you attempt to install another version's radio on the Verizon version, it won't work, and you may radio brick the phone (permanent damage possible).
Different radios, different partition layout.
Don't even try it. Experienced devs have tried to "convert" by various methods and mods, and failed.
But there may be other ways (besides flashing another version's radio) to enable the band(s) you want, read on:
cincon said:
[MENTION=434105]
because verizon devices you know that support 3, 4, 7, and 13 bands,but i want to enable band 20 for europe LTE..
Click to expand...
Click to collapse
You can take a look at the following method, as it claims to enable Band 20: http://forum.xda-developers.com/verizon-htc-one-m8/general/lte-band-7-2600mhz-finally-guide-t2992523
Read the thread, and proceed at your own discretion. I'm not knowledgeable with changing NV values (it doesn't work on "GSM" M8 variants, so does not apply to me). I simply know this thread exists.
cincon said:
[MENTION=434105]
pls help us to enable other bands =( because only u can do that as a genius =)
Click to expand...
Click to collapse
Far from a genius, and I don't create any of these mods. I just contribute by passing on knowledge I've gained here. Really, that is part of what XDA is all about.

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