Related
I know Verizon Wireless uses a CDMA network for their services. But LTE is GSM right? I remember the UMB standard which gives 4G on CDMA was abandoned in favor of LTE. So does that mean the Droid RAZR/MAXX have both GSM and CDMA radios? Also is it possible to have voice/video calling on 4G LTE?
Yes, the XT912, XT910, and Maxx phones use the same chipset and have GSM and CDMA radios. They have just been disabled for the different regions.
LTE is entirely separate and different then CDMA/GSM. LTE uses the 700Mhz spectrum, while GSM/CDMA uses 850Mhz to 2100Mhz. Eventually, once LTE becomes more mainstream will we see chipsets that support GSM/CDMA/LTE/HSPA+
The Razr has the capabilities to be used with GSM and CDMA, carrier depending. But not LTE. It simply doesnt have the chipset.
And 4G is a loose term. It is used in reference to LTE, and HSPA+. Since our phone only supports data speeds up to 14.4Mb down (HSPA), it is not a 4G device.
g2tegg said:
LTE is entirely separate and different then CDMA/GSM. LTE uses the 700Mhz spectrum, while GSM/CDMA uses 850Mhz to 2100Mhz. Eventually, once LTE becomes more mainstream will we see chipsets that support GSM/CDMA/LTE/HSPA+
The Razr has the capabilities to be used with GSM and CDMA, carrier depending. But not LTE. It simply doesnt have the chipset.
And 4G is a loose term. It is used in reference to LTE, and HSPA+. Since our phone only supports data speeds up to 14.4Mb down (HSPA), it is not a 4G device.
Click to expand...
Click to collapse
The cdma Droid razr and maxx are LTE phones. I don't know about the GSM Motorola razr.
Sent from my DROID RAZR using XDA
wildklymr said:
The cdma Droid razr and maxx are LTE phones. I don't know about the GSM Motorola razr.
Sent from my DROID RAZR using XDA
Click to expand...
Click to collapse
it often makes economic sense for a large scale electronics manufacturer to make only a single bit of hardware and then enable/disable various bits in software. Intel has been doing this for almost 30 years. I've seen several references to all RAZRs having identical hardware including one from a Verizon employee who claimed could flash a RAZR from gsm to cdma and then back again.
---------- Post added at 08:02 PM ---------- Previous post was at 08:00 PM ----------
what i often wonder is if there is a 1700 (tmobile) radio buried somewhere deep in the RAZR.
iolinux333 said:
]what i often wonder is if there is a 1700 (tmobile) radio buried somewhere deep in the RAZR.
Click to expand...
Click to collapse
Nah, iFixit did a teardown and found a Qualcomm MDM6600 baseband. That doesn't have T-Mobile's frequencies. If it had the option for pentaband GSM, Motorola would definitely market the hell out of that - think about how many more customers they could get.
http://www.ifixit.com/Teardown/Motorola-Droid-RAZR-Teardown/7048/1
wildklymr said:
The cdma Droid razr and maxx are LTE phones. I don't know about the GSM Motorola razr.
Sent from my DROID RAZR using XDA
Click to expand...
Click to collapse
Your right. I had no idea that Verizon had a LTE version. I guess thats the difference between the XT910 and the XT912. Im curious to know if the XT912, unlocked, will work with other LTE carriers besides Verizon.
On top of that, I am unable to find any ifixit reviews of the XT912. Only the XT910. Is there actual hardware differences?
My question is since LTE is GSM and Verizon is NOT GSM, how do they manage to provide LTE service? Does the phone keep switching between CDMA and LTE or what?
cheekrox said:
My question is since LTE is GSM and Verizon is NOT GSM, how do they manage to provide LTE service? Does the phone keep switching between CDMA and LTE or what?
Click to expand...
Click to collapse
When you're in an area that has LTE coverage, you'll get LTE. When you're in an area that does not have LTE coverage, the phone automatically switches to CDMA.
The Verizon RAZR does have a GSM radio. But as others have said, it's disabled. Verizon has said they're going to enable the GSM radio on the Droid 4 for international use in the future, and since the Droid 4 and the RAZR are pretty much identical internally, many people think that Verizon may eventually enable the GSM radio on the RAZR as well at some point (though there has not been any official or unofficial word from Verizon/Motorola on that).
To answer your questions:
1. They are using GSM. They partnered with Vodafone in 2007 and have been building their LTE network since then.
2. Yes. CDMA for 3G and LTE for 4G.
cheekrox said:
My question is since LTE is GSM and Verizon is NOT GSM, how do they manage to provide LTE service? Does the phone keep switching between CDMA and LTE or what?
Click to expand...
Click to collapse
Riight! So the DROID RAZR keeps switching between LTE (which is GSM) and Verizon's CDMA network right? Which means that it HAS TO have a GSM radio in it for LTE to function? Also I heard voice is NOT possible over 4G, is this true?
cheekrox said:
Riight! So the DROID RAZR keeps switching between LTE (which is GSM) and Verizon's CDMA network right? Which means that it HAS TO have a GSM radio in it for LTE to function? Also I heard voice is NOT possible over 4G, is this true?
Click to expand...
Click to collapse
Like myself and others have already said, there is a GSM radio in the Verizon RAZR. It is just not possible to use it. The Verizon RAZR will not work on a GSM network (at least not until the capability is enabled by Verizon or a developer).
VoLTE (voice over LTE) is possible, but no one is really doing that yet.
LTE is a form of GSM, but it's best to think about the two as completely different since in the real world their manner of operation is different. So don't think of LTE and GSM as the same type of technology that's interchangeable. Think of each as separate from the other.
Also, don't confuse what is often referred to as 4G on GSM networks (HSPA+) and LTE. They're also completely different. HSPA+ is often called 4G, but it's actually just an extension of existing 3G technology. LTE, for all intensive purposes, should be viewed as a completely different technology.
bsweetness said:
Like myself and others have already said, there is a GSM radio in the Verizon RAZR. It is just not possible to use it. The Verizon RAZR will not work on a GSM network (at least not until the capability is enabled by Verizon or a developer).
VoLTE (voice over LTE) is possible, but no one is really doing that yet.
LTE is a form of GSM, but it's best to think about the two as completely different since in the real world their manner of operation is different. So don't think of LTE and GSM as the same type of technology that's interchangeable. Think of each as separate from the other.
Also, don't confuse what is often referred to as 4G on GSM networks (HSPA+) and LTE. They're also completely different. HSPA+ is often called 4G, but it's actually just an extension of existing 3G technology. LTE, for all intensive purposes, should be viewed as a completely different technology.
Click to expand...
Click to collapse
I agree with you 100 percent. Except the fact that LTE is not a form of GSM nor CDMA. Its completely different.
The funny part about HSPA + is that its HSPA with mimo technology. Theoretically making it 3g on steroids.
razr maxx
There are two separate models of the Razr Maxx.
the first one, the xt912 released months ago is for the US market and is a CDMA phone
here s the link with all the specs:
developer . motorola . com / products / droid-razr-maxx-xt912
the second one, the xt910, is a gsm phone. and works on 2g and 3g networks around the world.
Connectivity
GSM 850/900/1800/1900,
W-CDMA 850/900/1900/2100
as u can read as well on Motorola website.
i cant post entire links due to restrictions to my new account but if u go on typing the url without spaces u will see all the specs
developer. motorola . com / products / razr_maxx_xt910
I have already bought the xt910 and i use it in Australia on normal 2g, 3g and 3.5g capable networks. It works on Telstra Next G network as well. The battery is amazing. 2 days of intense use in 3.5g without recharging it. 5 days of moderate use (gps - bluetooth - sync off) without a charge.
If you head over to the bionic forum a developer has been able to unlock the GSM radio for the RAZR/Droid 4/Bionic. It's compatible with ATT HSPA and T-Mobile edge. As far as I know it's still a work in progress.
Sent from my DROID RAZR MAXX via XDA
And yes at this time no carrier (that I know of) carries voice over LTE. It's still in the experimental stages.
Sent from my DROID RAZR MAXX via XDA
convert a cdma xt912
Hey guys I want to know if anyone could convert a cdma xt912 into a GSM phone by using a ROM or something ??
alyreda said:
Hey guys I want to know if anyone could convert a cdma xt912 into a GSM phone by using a ROM or something ??
Click to expand...
Click to collapse
Nope, you can get it running on 2G though I believe.
Sent from my ADR6425LVW
So is there any way I could get 4G working on my XT910?
cheekrox said:
So is there any way I could get 4G working on my XT910?
Click to expand...
Click to collapse
Not that I know of.
Sent from my ADR6425LVW
Does the rezound support proper us GSM, if so how, and what does it support (I have Tmobile, will it support 3g/4g)
Check out the htc Rezound development forum and look for two roms:
MIUI and Rezound maister. They are both built with gsm built-in, while other roms offer gsm functionality with a flashable zip.
Don't know the answer to your tmobile question but my understanding is that it does work in the USA.
And just FYI, the OS that comes with the Rezound does not support gsm, you have to be running a custom rom that supports it.
Sent from my Rezound using Tapatalk 2
ericerk said:
Does the rezound support proper us GSM, if so how, and what does it support (I have Tmobile, will it support 3g/4g)
Click to expand...
Click to collapse
brenuga said:
Check out the htc Rezound development forum and look for two roms:
MIUI and Rezound maister. They are both built with gsm built-in, while other roms offer gsm functionality with a flashable zip.
Don't know the answer to your tmobile question but my understanding is that it does work in the USA.
And just FYI, the OS that comes with the Rezound does not support gsm, you have to be running a custom rom that supports it.
Sent from my Rezound using Tapatalk 2
Click to expand...
Click to collapse
Yes The latest Stock Rom OTA update does support GSM natively, just use it in GSM/UMTS mode.
Here is the link to download it:
http://www.androidpolice.com/2012/0...ull-ruu-build-4-03-605-2-for-the-htc-rezound/
Lot of other custom roms also offer that.
But one issue i have seen in the stock rom is RF Calibration is need to get good network bars and specially 4G. I am not sure about whether this issue has been solved in custom roms or not.
NilayS said:
Yes The latest Stock Rom OTA update does support GSM natively, just use it in GSM/UMTS mode.
Here is the link to download it:
http://www.androidpolice.com/2012/0...ull-ruu-build-4-03-605-2-for-the-htc-rezound/
Lot of other custom roms also offer that.
But one issue i have seen in the stock rom is RF Calibration is need to get good network bars and specially 4G. I am not sure about whether this issue has been solved in custom roms or not.
Click to expand...
Click to collapse
Latest stock rom ota leak, not actually an official ota yet (at least I haven't seen anyone mention getting it).
There is a search button for a reason
AshtonTS said:
There is a search button for a reason
Click to expand...
Click to collapse
You felt the need to bump this just to tell him to use the search button, after the question has already been answered?
Hi
NilayS said:
Yes The latest Stock Rom OTA update does support GSM natively, just use it in GSM/UMTS mode.
Here is the link to download it:
Lot of other custom roms also offer that.
But one issue i have seen in the stock rom is RF Calibration is need to get good network bars and specially 4G. I am not sure about whether this issue has been solved in custom roms or not.
Click to expand...
Click to collapse
with last ruu work sms or mms??
my htc rezound said:
with last ruu work sms or mms??
Click to expand...
Click to collapse
how to fix "sim card source unknown" error?
javed91214 said:
how to fix "sim card source unknown" error?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1882355
ericerk said:
Does the rezound support proper us GSM, if so how, and what does it support (I have Tmobile, will it support 3g/4g)
Click to expand...
Click to collapse
3G may work after T-Mobile completes UMTS/HSPA 1900Mhz refarming. Supposedly by the end of the year.
You also need to modify radio configuration.
http://forum.xda-developers.com/showthread.php?t=1914122
ericerk said:
Does the rezound support proper us GSM, if so how, and what does it support (I have Tmobile, will it support 3g/4g)
Click to expand...
Click to collapse
Just to clarify, I was looking up the Rezound trying to think what the next HD2 style hackable phone might be. I found it supports AT&T's frequencies: GSM 850/1900 and AT&T's 3G/HSPA is on the 1900 band. T-Mobile can use GSM 850 and 1900, and their 3G/4G is on the 1700 band known as AWS. As the above post stated they've been reconfiguring their towers in some areas to also do 3G/4G on 1900 like AT&T. Maybe in those areas T-Mobile 3G/4G will just work? But this looks really appealing as a multi-band phone.
i have bobzhome's metropcs version of cm 10.2 which is also for the t-mobile varriant and i cant get 4g to work i have the correct apn settings and it flashes E in the signal bar for data i dont want edge.
please someone tell me how to enable and get my 4g working back correctly.
thasilenthacker said:
i have bobzhome's metropcs version of cm 10.2 which is also for the t-mobile varriant and i cant get 4g to work i have the correct apn settings and it flashes E in the signal bar for data i dont want edge.
please someone tell me how to enable and get my 4g working back correctly.
Click to expand...
Click to collapse
4g wont work on l9, on this phone you can use 3g(internet) segnal or 2g(sms and calls)
to use 4g you must have a phone that support this tecnology(HARDWARE)
thasilenthacker said:
i have bobzhome's metropcs version of cm 10.2 which is also for the t-mobile varriant and i cant get 4g to work i have the correct apn settings and it flashes E in the signal bar for data i dont want edge.
please someone tell me how to enable and get my 4g working back correctly.
Click to expand...
Click to collapse
Please make sure that after unlock boot loader you flash your original kdz back by offline method. I think it a incorrect baseband problem.
Sent from my LG-P768 using xda app-developers app
my l9 is 4g its the metropcs lg optimus l9 4g
thasilenthacker said:
my l9 is 4g its the metropcs lg optimus l9 4g
Click to expand...
Click to collapse
Yea my t-mobile L9 (P769) uses 4g as well, however I do not believe they are LTE capable (correct me if im wrong). Many people think 4g and lte are the same.However they are not.
my phone is lte capable. 4g LTE
thasilenthacker said:
my phone is lte capable. 4g LTE
Click to expand...
Click to collapse
That is not true. Not a single LG optimus L9 variant regardless of model or network supports LTE. However they are capable of running 4g just not 4g LTE. The 4g runs off HSPA+ not LTE. Even the LG optimus L9 II uses HSPA+ for the 4g network.
T-Mobile USA seems to define 4g their way. Something like gsm, umts, hspa & cdma, that makes four.
lecorbusier said:
T-Mobile USA seems to define 4g their way. Something like gsm, umts, hspa & cdma, that makes four.
Click to expand...
Click to collapse
Thats all the radio bands the device can pick up. 4g acctually runs off the hspa. If you change your prefered network to gsm/cdma or umts only or auto it will not connect to 4 g. In order to connect to 4 g you must select hspa+ auto or wcdma+ auto. I couldnt connect to 4g when i first got my phone and its because the prefered network was set to gsm/cdma (auto). I get the best speed on wcdma+(auto). That will make it connect to the fastest radio band available. My phones a t-mobile but I unlocked it and switched to at&t because tmobiles data speed was horrible. I would average .20 mbps - 2.25 mbps (bits not bytes) with tmobiles 4g. On at&t I get 12mbps to 25 mbps and have even got as high as 40mbps right in town. Thats just in my area however, im sure tmobile has good speed in certain areas. After switching to at&t it made me miss my lg p870 I gave my girl because its LTE and she gets anywhere from 20-50mbps!?
Hello! I bought my HTC one via ebay and I've rooted and using HDR 31.6 and ever since I can't get any LTE signal and im stuck at WCDMA which is 3G only. I read a thread here about flashing radios, so is it possible for me to get LTE signal if I flashed my radio? Thanks!
pherrr said:
Hello! I bought my HTC one via ebay and I've rooted and using HDR 31.6 and ever since I can't get any LTE signal and im stuck at WCDMA which is 3G only. I read a thread here about flashing radios, so is it possible for me to get LTE signal if I flashed my radio? Thanks!
Click to expand...
Click to collapse
anyone???
Where do you live? Are you sure your country/provider actually have a LTE infrastructure?
pherrr said:
Hello! I bought my HTC one via ebay and I've rooted and using HDR 31.6 and ever since I can't get any LTE signal and im stuck at WCDMA which is 3G only. I read a thread here about flashing radios, so is it possible for me to get LTE signal if I flashed my radio? Thanks!
Click to expand...
Click to collapse
That's simple, because you got the one with the North American Radio Bands, not the European (which the ME supports)
I had to buy my Nexus 5 from the UK Play store because of this and my LTE works flawlessly in Bahrain.
There were rumors that this phone has CDMA bands like a few other unlocked phones (Nexus 6/5X/6P, iPhone 6/6+/6S/6S+, Moto X Pure). I haven't heard any other news about it lately.
Has anyone tried this phone on Verizon? Or maybe even a T-Mo variant (doubt it has CDMA bands)? I can't use the Verizon variant with no root.
joshw0000 said:
There were rumors that this phone has CDMA bands like a few other unlocked phones (Nexus 6/5X/6P, iPhone 6/6+/6S/6S+, Moto X Pure). I haven't heard any other news about it lately.
Has anyone tried this phone on Verizon? Or maybe even a T-Mo variant (doubt it has CDMA bands)? I can't use the Verizon variant with no root.
Click to expand...
Click to collapse
Based on what I can see here: http://www.phonescoop.com/phones/phone.php?p=5094
You would not have LTE at all using the international or T-Mobile version as the Verizon LTE band (13) isn't supported in versions other than the Verizon G5. You also would not have CDMA 850 or 1900, though it does have WCDMA 2 and 5, which seem to be the same bands.
liquidzoo said:
Based on what I can see here: http://www.phonescoop.com/phones/phone.php?p=5094
You would not have LTE at all using the international or T-Mobile version as the Verizon LTE band (13) isn't supported in versions other than the Verizon G5. You also would not have CDMA 850 or 1900, though it does have WCDMA 2 and 5, which seem to be the same bands.
Click to expand...
Click to collapse
Ok I did a little more digging and I was wrong. It's the RS988 that's supposed to have Verizon bands:
http://www.bhphotovideo.com/c/product/1239314-REG/lg_lgrs988_ausasv_g5_h850_32gb_smartphone.html
I also stumbled across this where someone states they have it working on Verizon:
http://forum.xda-developers.com/lg-g5/help/rs988-varient-recovery-mode-hard-reset-t3383287
I'm going to do a little more digging and see if this model can be bootloader unlocked. I guess I got confused because the B&H link has H850 in it.
Sent from my XT1575 using Tapatalk