well through testing almost all of the roms here in this section i have found out that every rom does have 3g but if you select HSDPA/HSUPA you will lose your 3G connection and can only have it again if you disable HSDPA/HSUPA. This seems very odd because the hermes and kaiser would switch between the two depending on which one had the stronger connection. i welcome others to test this as i think it is interesting and should be looked into.
HackMimic said:
well through testing almost all of the roms here in this section i have found out that every rom does have 3g but if you select HSDPA/HSUPA you will lose your 3G connection and can only have it again if you disable HSDPA/HSUPA. This seems very odd because the hermes and kaiser would switch between the two depending on which one had the stronger connection. i welcome others to test this as i think it is interesting and should be looked into.
Click to expand...
Click to collapse
Hmmm Curious..
I am currently running RomeOS 1.21 and am about to update to 1.51.
mine switches no problem between the two.
If i can't get a HSDPA signal then it auto switches to 3G..
will see if the new rom changes anything.
Dean
let me know because i have been observing and have only seen it auto change from H to E or G whichs sucks when it use to go from H to 3G. travel the entire bay area for my job and both phones side by side with me act different. so wierd.
HackMimic said:
let me know because i have been observing and have only seen it auto change from H to E or G whichs sucks when it use to go from H to 3G. travel the entire bay area for my job and both phones side by side with me act different. so wierd.
Click to expand...
Click to collapse
I Thought H was the same as 3g. Isn't Att's 3G network run on HSDPA?
HackMimic said:
well through testing almost all of the roms here in this section i have found out that every rom does have 3g but if you select HSDPA/HSUPA you will lose your 3G connection and can only have it again if you disable HSDPA/HSUPA. This seems very odd because the hermes and kaiser would switch between the two depending on which one had the stronger connection. i welcome others to test this as i think it is interesting and should be looked into.
Click to expand...
Click to collapse
HSDPA/HSUPS is 3G. If you are referring to WCDMA vs HSPA there would not be a stronger connection for either because they are on the same frequency.
Fact is on the Hermes/Kaiser the HSPA was downstream only (HSDPA) , on the raph its has bi-directional HSPA (HSDPA and HSUPA) therefor the towers you are broadcasting to with the device will have HSPA mode on continuously as apposed to only when you are receiving from them since the device is receiving and transmitting using HSPA.....which is why the HSDPA mode "H" symbol only appeared during data transfer on the older devices, there was normally a short delay (when using the device as a modem for example) before the "H" appeared and the data began coming in.
Notice how you need to reboot if you choose to deactive HSPA alltogether? The radio stack probably needs to start a new session on the network to change from HSPA back to UMTS only. Indeed when you set standard 3G mode you should get the "3G" symbol rather than "H".
The service rep at ATT told me the other day that HSDPA is actually different then 3G. THe HSDPA is typically meant for the Laptop Connect cards. Since the inception of the iPhone on 3G if you haven't noticed your speeds have dropped significantly.
How true is this I don't know...but when I am using a ROM like RRE that has HSDPA my speeds are much faster then with 3G.
ryncppr said:
The service rep at ATT told me the other day that HSDPA is actually different then 3G. THe HSDPA is typically meant for the Laptop Connect cards. Since the inception of the iPhone on 3G if you haven't noticed your speeds have dropped significantly.
How true is this I don't know...but when I am using a ROM like RRE that has HSDPA my speeds are much faster then with 3G.
Click to expand...
Click to collapse
HSPA (3.5G) is just another coding method, it still uses the 3G frequencies as with UMTS (aka normal 3G). The theoretical bandwidth due to the more complex an efficient coding method means you can get ALOT more bandwidth down the same frequency than with UMTS. So technically UMTS and HSPA can both be encompassed into the "3G" terminology although they use different coding techniques, the video calling and voice stuff are handled identically afaik, data transmission is where they differ.
This kind of improvement can be seen in the 2G technologies with GSM/GPRS/EDGE.
HSDPA is a "higher speed" data connection than 3G... but its still a "3G" frequency data connection. So on-the-face-of-it, they are one and same, just one is faster than the other.
thank you so much. i am a very visual and analytical person. love to compare behavour. glad i got a real answer about this as i have been reading for days on this and it seems kind of cloudy with the fuze on information. thank you again for the replys.
Wow, there's quite a bit of information, some conflicting, about the various 3G-related terminologies here. So I might as well add my take on it all
Let's compare 2G terminologies to 3G ones, as that should make it easier for some to understand.
GSM - the very basic 2G standard
UMTS - the very basic 3G standard
GPRS - upgraded GSM to packet switching - faster data access - dubbed 2.5G
HSDPA - upgraded UMTS to faster downlink speeds - dubbed 3.5G
EDGE - upgraded GPRS to faster data access - dubbed 2.75G
HSUPA - upgraded UMTS to faster uplink speeds - dubbed 3.75G (occasionally)
Finally, HSPA is simply a term encompassing HSDPA and HSUPA.
I hope this helps more than it hurts
Trancecoder said:
GSM - the very basic 2G standard
UMTS - the very basic 3G standard
GPRS - upgraded GSM to packet switching - faster data access - dubbed 2.5G
HSDPA - upgraded UMTS to faster downlink speeds - dubbed 3.5G
EDGE - upgraded GPRS to faster data access - dubbed 2.75G
HSUPA - upgraded UMTS to faster uplink speeds - dubbed 3.75G (occasionally)
Click to expand...
Click to collapse
There i fixed it for you
shotta35 said:
There i fixed it for you
Click to expand...
Click to collapse
WCDMA is the air interface for UMTS as
TDMA is the air interface for GSM.
At the same time, GSM is used to describe a phone system that uses GSM/TDMA and UMTS/WCDMA versus the CDMA phone system used by Sprint/Verizon/Qualcomm.
Confused yet?
NuShrike said:
WCDMA is the air interface for UMTS as
TDMA is the air interface for GSM.
At the same time, GSM is used to describe a phone system that uses GSM/TDMA and UMTS/WCDMA versus the CDMA phone system used by Sprint/Verizon/Qualcomm.
Confused yet?
Click to expand...
Click to collapse
PLEAAAASEEE can we go into how OFDM and QPSK work?? i want to see some heads explode...scanners style.
NuShrike said:
WCDMA is the air interface for UMTS as
TDMA is the air interface for GSM.
At the same time, GSM is used to describe a phone system that uses GSM/TDMA and UMTS/WCDMA versus the CDMA phone system used by Sprint/Verizon/Qualcomm.
Confused yet?
Click to expand...
Click to collapse
LOL, newbs reading this will and should be confused. I only edited it to make his comparisons between GSM and UMTS which is should be, not GSM and WCDMA which aren't in the same "group"
shotta35 said:
LOL, newbs reading this will and should be confused. I only edited it to make his comparisons between GSM and UMTS which is should be, not GSM and WCDMA which aren't in the same "group"
Click to expand...
Click to collapse
*head explode*
what are decent speeds for HSPA connections?
shotta35 said:
There i fixed it for you
Click to expand...
Click to collapse
Thanks. I really shouldn't post anything when it's late, especially when my head feels twice its size due to a particularly annoying cold
NuShrike and Mr. Vanx has explained it.
These jargons always confusing for us, laymans. Easiest term is i think CDMA (2000,1X, EVDO) is used almost exclusively in US, while GSM and WCDMA (UMTS) is in almost everywhere else of the world (around 3.5 billon users as of now - open www.gsmworld.com). Except Japan, they have their own customized system.
Reasons of difference? Matter of choice, more like when you decide using VHS instead of BetaMax. I think part of the reason why US choose CDMA instead of GSM you may ask Qualcomm's technical people, as they hold majority of the copyrights and licenses in CDMA technology. Not only in driverless chipsets... LoL.
Actually, we in Indonesia also adopt CDMA in smaller and narrower market. But the gov limit them to be Fixed Wireless. Now, what does the jargon: Fixed Wireless means?? Another head exploded... LoL =D
3G icon shows when the phone's sitting idle, H shows when data's being transferred.
My phone shows H all the time now because this market has moved on from UMTS + HSPDA to a HSPA market now. This is ONLY as a result of using the non-AT&T ROM, if you use that it will say 3G because AT&T has disabled it (the icon, not speeds) to cause less confusion.
As for what's typical HSPA speeds? Well on the AT&T network i've seen as high as 2Mbps (on a 3.6Mbps HSPA network) but there are places in Europe that are deploying 7.2Mbps and in Australia they are launching 21Mbps!!!
Related
For the life of me, I can't figure this one out. I've searched high and low but haven't found an answer.
How, on an Android (2.1) phone, can I detect what band am I currently using.
No, it doesn't support locking onto single band (choices are only 2G, 2G/3G, 3G).
No, I can't ask my provider, because they support BOTH bands simultaneously.
No, I can't figure it from a coverage map, since BOTH bands cover my location.
I'm using Samsung Galaxy S (and HTC Desire when it comes from service...), both European versions that support 900MHz and 2100MHz bands (for UMTS).
Is there a way/app/script/ANYTHING that can show me what band the phone is currently using?
The reason for this is that, as I said, in my location there are BOTH types of antennas and even though the coverage is marketed as good, I get very poor signals. I suspect that the phones locks onto just one of the bands (for any reason) and that the other one might be a better choice.
3G band reception is usually worse than 2G because it has a shorter range than 2G and it doesn't have so much building/wall penetration than 2G. I suggest you try setting your phone to use 2G only (in network settings) and try it out. The phones are made so they use the fastest network even if the signal strength is worse.
Sent from my GT-I9000 using XDA App
peewo said:
3G band reception is usually worse than 2G because it has a shorter range than 2G and it doesn't have so much building/wall penetration than 2G. I suggest you try setting your phone to use 2G only (in network settings) and try it out. The phones are made so they use the fastest network even if the signal strength is worse.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Yeess...? And your point concerning my question was exactly what? How does that help me to detect which UMTS band my phone is operating on? By turning it OFF?
I'm sorry, but either you didn't read it at all, just completely missed my point, or are trying to piss me off. (sorry, I'm just sooooo tired that people don't read the posts they answer to, or just completely miss the point of the post.)
Sorry. But. UMTS = 3G. So turning 3G OFF does NOT, in the slightest, help me detect what I originally asked for.
Just to be PERFECTLY clear: YES, 3G/UMTS works on BOTH 900MHz AND 2100MHz channels here in Finland. Yes, 900MHz 3G. Not a typo.
I also want to know this question
Same here... No app... come onnnnnnn
Just type *#0011# in the dialer dude. It will tell you which band you're on.
Alright XDA I just got off the phone with Tmobile Android Tech Support and they mentioned that the Vibrant is compatible with the new 4g network that is mid rollout but the phone has to be rooted (done) and new firmware installed (also done, thanks Bionix). Any ideas on how to turn that little feature on?
Wrong section...lol
Anyway, its an automatic thing. The only way you'll see if you are in HSPA+ instead of reg 3G is if you have a Froyo ROM loaded. The only phone (out the box) so far that shows the H is the G2
They're talking about the HSPA+ and our phones aren't capable of HSPA+. They do have HSPA 7.2, so you will see an increase of speed but not the full HSPA+ speeds of the network.
I think someone telling you you stories.
Sent from my SGH-T959 using Tapatalk
dav3wash said:
Wrong section...lol
Anyway, its an automatic thing. The only way you'll see if you are in HSPA+ instead of reg 3G is if you have a Froyo ROM loaded. The only phone (out the box) so far that shows the H is the G2
Click to expand...
Click to collapse
You can also download mobile signal widget from the market. I have it on my vibrant. It shows E, G, 3g, and H, so even though the phone itself won't show it, the widget does. I myself am getting good speeds with my vibrant. I have hit 6.3 mbs down and 1.6 up sitting at my desk at work.
Sent from my SGH-T959 using XDA App
would a tmobile rep really tell you that your phone has to be rooted?
Vibrant does not have HSPA+ you get some speed pump if network in your area are HSPA+ but not full 4G speed.
There is some confusion on how T-Mobile is marketing this upgrade. What they are trying to explain is that because the HSPA+ and the HSPA network share resources, that when the serving cell site is upgraded to the fast 50 mbps backhaul fiber for HSPA+ that the HSPA phones like the vibrant will have a faster backhaul connection and should run at much closer to the 7.2 mbps theoretical throughput. Some curernt 3G sites are running at 2 T1's currently which limits your data throughput to 3 mbps due to the backhaul connection. When the site get upgraded to HSPA+ it still has the same 2 T1's but they add an additional fiber connection that is 25 mbps to 50 mbps depending on the providers capabilities.
jtc442 said:
You can also download mobile signal widget from the market. I have it on my vibrant. It shows E, G, 3g, and H, so even though the phone itself won't show it, the widget does. I myself am getting good speeds with my vibrant. I have hit 6.3 mbs down and 1.6 up sitting at my desk at work.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
What's the name of the app?
Sent from my SGH-T959 using XDA App
What I am happy about is that T-Mobile has decided to stop being so damn scared and is actually advertising it as 4G. True, the technology is based on 3G, but the data speeds are actually better than the current 4G implementations. Verizon and sprint did this with their current 3G CDMA networks. When they first launched EVDO it didn't meet the 2mbps required by the 3G standards. That didn't stop them from marketing it as 3G though and eventually the technology caught up.
And the HSPA+ network is not tapped out either. We could soon see 42 mbps on a HSPA+ network.
I will welcome the day when they stop with all the marketing BS and just advertise the prices and speeds. ill take 21 mbps 3G over 6mbps 4G any day.
los0325 said:
What's the name of the app?
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Nevermind I reread your post
Sent from my SGH-T959 using XDA App
wj04 said:
Alright XDA I just got off the phone with Tmobile Android Tech Support and they mentioned that the Vibrant is compatible with the new 4g network that is mid rollout but the phone has to be rooted (done) and new firmware installed (also done, thanks Bionix). Any ideas on how to turn that little feature on?
Click to expand...
Click to collapse
As some of the other posters have noted, you were slightly misinformed. T-Mobile's "4G" network is really HSPA+. The Vibrant does not support HSPA+: you cannot get "4G" on the Vibrant because its hardware is not compatible.
However, in those markets that get HSPA+, the regular HSPA speeds should increase—to take advantage of this you do not need to do anything, your phone will automatically handle it for you. The Android version on your device has nothing to do with being able to handle the speed increase.
Some ROMs change the network indicator in the notification bar to show when you are connected to a HSPA network (H) as opposed to a UMTS (3G) one. If you feel that you ought to be getting HSPA network connections, but your phone is only showing "3G", you can verify this yourself by going to "Settings > About phone > Status": there is an entry there that says "Mobile network type", and this will either say GPRS, EDGE, UMTS or HSPA.
Further, why are questions being asking in a development forum? Will a mod please move this to the appropriate location, and will people please start paying attention and posting their questions in the proper location.
los0325 said:
What's the name of the app?
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
uh....he said it's called MOBILE SIGNAL WIDGET just search that on the market...lol
They Said It Will Only "Boost" The Internet Speed On Our Phones,
my Roommate has a T-Mobile HTC HD 2 rooted with CM6 and in Orlando, FL he gets the "H" hspa+ and very very fast.
Sent from my SGH-T959 using XDA App
CamachoInc said:
my Roommate has a T-Mobile HTC HD 2 rooted with CM6 and in Orlando, FL he gets the "H" hspa+ and very very fast.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
The "H" is for HSPA. It doesn't matter if it's "plus" or not. The HD2 is capable of HSPA 7.2 3G speeds, not HSPA+ 3G 4G speeds, but since HSPA+ is simply and upgrade to the existing HSPA 7.2, then not only will HSPA 7.2 phones (like the HD2 and all current T-Mobile Android phones) work on HSPA+ networks, but they will perform closer to the 7.2Mbps maximum possible download speed of HSPA 7.2 technology. However, they will not reach the higher speeds that are possible with phones designed for HSPA+ like the G2.
Short answers:
-Does the Vibrant work on T-Mobile's "4G network" (HSPA+)?
Yes
-Does the Vibrant get better speeds on "4G" than on 3G?
Yes
-Can the Vibrant take full advantage of T-Mobile's "4G data" and achieve speeds beyond what is possible on 3G (HSPA 7.2)?
No
Just want to point out that its hsDpa and hspa+. Hsdpa is up to 7.2, hspa+ is up to 21. None of the t mobile phones tell you which you are on, because it doesn't matter unless you are on a g2 (which still doesn't tell you, just says H either way). It would be nice to know, but a quick speed test will always make it obvious. If your getting over 1.5 down (tmobile 3g max) your on hsdpa.
Sent from my SGH-T959 using XDA App
remixfa said:
Just want to point out that its hsDpa and hspa+. Hsdpa is up to 7.2, hspa+ is up to 21. None of the t mobile phones tell you which you are on, because it doesn't matter unless you are on a g2 (which still doesn't tell you, just says H either way). It would be nice to know, but a quick speed test will always make it obvious. If your getting over 1.5 down (tmobile 3g max) your on hsdpa.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
HSPA is a term used to cover both HSDPA and HSUPA. The "D" is for "download" and the "U" is for "upload". When we're talking about network speeds like 7.2 vs 21, we're usually only talking about download speeds, so strictly speaking we've only been talking about HSDPA for both 7.2 and +.
Mr_Tricorder said:
HSPA is a term used to cover both HSDPA and HSUPA. The "D" is for "download" and the "U" is for "upload". When we're talking about network speeds like 7.2 vs 21, we're usually only talking about download speeds, so strictly speaking we've only been talking about HSDPA for both 7.2 and +.
Click to expand...
Click to collapse
Mostly true. HSPA (High-Speed Packet Access) does consist of both HSDPA (High-Speed Downlink Packet Access) and HSUPA (High-Speed Uplink Packet Access). HSDPA allows for 7.2 Mbps downstream on T-Mobile's US network, although HSDPA can accommodate speeds as high as 14.0 Mbps. HSUPA allows for upstream speeds up to 5.7 Mbps.
Originally, most carriers started with HSDPA, while maintaining the original 384 kbps speeds on the upstream of 3G. For this reason there was a difference between HSDPA and HSPA: HSDPA was used for received faster downloads but still receiving the lower 384 kbps upstream speed; HSPA was used for when the handset was received HSDPA speeds downstream and HSUPA speeds on the upstream.
HSPA+ (Evolved High-Speed Packet Access) allows for up to 56 Mbps downstream and 22 Mbps upstream. T-Mobiles "4G" HSPA+ network is only getting 22 Mbps downstream at present, but it is possible that this could increase.
True 4G service means that 100 Mbps or greater is possible downstream. Sprint's WiMax "4G" network is not true 4G either: it is only rated at 40 Mbps at present, although theoretically it can achieve 1 Gbps.
However, all of this is moot, since the Vibrant (like all other SGS devices at present) does not have a HSPA+ radio, and therefore can only reach a maximum 14.0 Mbps downstream, and 5.7 Mbps upstream. Also, this really does belong in either General or Q&A.
Hi
Our O1 is HSDPA 7.2 Mbps acroding to spec sheets but in the settings it shows either GSM or WCDMA. There is no HSDPA.
Is HSDPA included in the GSM settings?
I am getting very low speeds even when it says 3G in the notifications bar so was just wondering.
WCDMA deployments are usually marketed as UMTS.
UMTS networks in many countries have been or are in the process of being upgraded with High Speed Downlink Packet Access (HSDPA), sometimes known as 3.5G.
So the answer to your question is: HSDPA is included in WCDMA settings. Or properly said, it is a feature of the WCDMA connection mode. Your phone supports it. If you get low speeds, then your operator doesn't offer this service in your area. Or at all.
If you have never seen an "H" in your status bar, only "G" or "3G", that't the answer: no such service in your area from your mobile operator.
I actually see H and 3G most of the time with it goin to E(EDGE) or G(GPRS) very rarely.
I was just wondering why it wasn't given in the settings.
And the speeds remain poor. Even at nights, assuming less traffic/users, the speeds rarely rise above 40 KBps. I am not looking for 3.6 Mbps or 7.2 Mbps but atleast speeds in the range of 1Mbps(128KBps) should be there.
Anyway, i guess its my operator that sucks!
Now that number portability has been rolled out here in India its time to switch operators!
Thanks for the reply. Upped that meter a little for ya!
kewlsid05 said:
I was just wondering why it wasn't given in the settings.
Click to expand...
Click to collapse
The reason why you don't see HSDPA as an option in your menu is because the WCDMA connection will automatically work at its best: HSDPA if available or 3G otherwise. Low speed even if your phone is connected using HSDPA is definitely your operator's fault.
Glad I was able to shed some light on this matter and thanks for the appreciation.
It's weird. I have an Atrix and a new GSII. At home my Atrix shows HSPA and my GSII shows HSDPA. Isn't HSPA "4G" and HSDPA 3G?
mgymnop said:
It's weird. I have an Atrix and a new GSII. At home my Atrix shows HSPA and my GSII shows HSDPA. Isn't HSPA "4G" and HSDPA 3G?
Click to expand...
Click to collapse
That's what I thought too, and I'm also showing HSDPA... hmmm... but the upload speeds are HSPA+ so it can't be right.
I thought both 3G and "4"G could be called HSPA. High Speed Packet Access.
Doesn't the D stand for download. I thought HSUPA (U for upload) was the feature that got all the publicity with the Atrix, as it wasn't activated at launch.
I am sitting on H+ according to my status but in about it says UMTS, which I thought was 3G. My HTC 8525 ran on UMTS 4 years ago.
Sent from my SGS II
quarlow said:
I thought both 3G and "4"G could be called HSPA. High Speed Packet Access.
Doesn't the D stand for download. I thought HSUPA (U for upload) was the feature that got all the publicity with the Atrix, as it wasn't activated at launch.
I am sitting on H+ according to my status but in about it says UMTS, which I thought was 3G. My HTC 8525 ran on UMTS 4 years ago.
Sent from my SGS II
Click to expand...
Click to collapse
I think in the about settings HSPA means HSPA+ while HSDPA means the slower standard. I think it is probably a bug. My Atrix could distinguish between HSPA and HSDPA in the about settings. In areas without 4G it would read UMTS or HSDPA while in advanced backhaul areas it would read HSPA. On The GSII it seems to be messed up. I never saw HSPA.
mgymnop said:
I think in the about settings HSPA means HSPA+ while HSDPA means the slower standard. I think it is probably a bug. My Atrix could distinguish between HSPA and HSDPA in the about settings. In areas without 4G it would read UMTS or HSDPA while in advanced backhaul areas it would read HSPA. On The GSII it seems to be messed up. I never saw HSPA.
Click to expand...
Click to collapse
Mine is acting the same way my Infuse was. It never seems accurate. Obviously if you pass the 0.33mbps range your HSUPA is enabled. That's about all we really know for sure, hehe
Phone status display frequently is broken in the framework and not reporting correctly.
For example, the Infuse would report UMTS when in an HSPA+ mode...
Entropy512 said:
Phone status display frequently is broken in the framework and not reporting correctly.
For example, the Infuse would report UMTS when in an HSPA+ mode...
Click to expand...
Click to collapse
I'd imagine the marketing\disguising one technology as another and not being forthcoming about where has "enhanced backhaul" nor defining what "enhanced backhaul" even is in terms of speed, likely doesn't help things either ;-)
hspa and hsdpa are both 3.5G at best
Sent from my SGH-I777 using xda premium
Dial *#0011# on your phone. The screen will show what exactly is your phone using. So far, I have yet seen 'HSPA+ used' display anything other than 0.
hello all,
I was wondering whether it is possible to unlock the LTE radio on the Eu retail version. I think the chipset is the same and hence it does have the capability.
Thanks in advance,
Santanu Dey
Are you saying that your razr never gets 4G / HSDPA signal?
Don't you ever get the little 'H' on your connection indicator?
CheesySeb said:
Are you saying that your razr never gets 4G / HSDPA signal?
Don't you ever get the little 'H' on your connection indicator?
Click to expand...
Click to collapse
Not even LTE is 4G. It is called such for pure marketing speculation since LTE is still part of UMTS... it is its 8th revision, actually.
Cheesy, you should first ask your provider if they reach ~325Mbps. Vodafone, the european carrier with the best network, sells 48Mbps (HSPA++) as LTE, which isn't really.
LTE isn't yet fully ratified, actually.
Anyway, it works
For general information:
LTE is Long Term Evolution.
HSPA or High speed packet access and its derivatives are not LTE...
The modulation scheme is different as well as the coding and spectrum and Bandwidth. LTE works in 2 variations TDD and FDD, whereas HSPA/UMTS is purely FDD. Secondly, LTE works in 1.4Mhz, 5 MHz, 10Mhz , 20Mhz Bandwidth whereas HSPA/UMTS is only 5 Mhz.
Basically HSPA is a evolution of data access on UMTS network, as EDGE was in GSM network.
So , returning back to the same question..... Can we unlock LTE radio on the Razr? My operator Telia is already having commercial LTE network (300/100 Mbps DL)..
Beg my pardon I was not aware ( haven't done quite as much research as you guys it would seem ;D )
Can I just ask briefly, is LTE a cdma standard as opposed to gsm or is it something viable on both platforms?
LTE is basically a convergent network between the CDMA and the GSM domains. The radio standard has been designed in such a way that it shares the backward compatibility towards CDMA and GSM domains..."BUT".. LTE is much more bent toward the GSM/WCDMA domain than CDMA/EVDO domains,since it shares the same spectral characteristics of the UMTS networks.
WIMAX on the other hand is more bent towards CDMA/EVDO domains...