Develop Bugs

[Q] ATT Version Usable with T-Mobile?

I am going to switch to T-Mobile in 2 months so was wondering if it will work with T-Mobile's HSPA + Network.

AFAIK It won't, but the frequenceies are listed on both carrier's sites so you can have a look at that.

No.
http://www.androidpolice.com/2011/0...nt-4g-hspa-phone-will-not-be-covered-by-both/

Couldn't we just flash the t-mobile radio like with the t-mobile sgs2 and the skyrocket from at&t?

It should be possible. Check out the specs of the two: http://www.gsmarena.com/compare.php3?idPhone1=4804&idPhone2=4803
This is EXACTLY the same as Tmobile S2 and ATT S2 LTE: http://www.gsmarena.com/compare.php3?idPhone1=4129&idPhone2=4303
Some awesome dev needs to do some radio hacking to make the two phones interchangeable as they did for the S2/S2 LTE.

pvc_ said:
No.
http://www.androidpolice.com/2011/0...nt-4g-hspa-phone-will-not-be-covered-by-both/
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Click to collapse
that article is over a year old. there are many devices that work on both carriers via 4g. looking at the frequencies on att version it should work with a radio flash.

There's hope then

http://news.cnet.com/8301-1035_3-57460125-94/t-mobiles-pricier-samsung-galaxy-s3-will-not-get-lte/
same hardware in all US S3's so theoretically even a sprint or verizon one can be flashed if its just going to be software limitations

tspx23 said:
http://news.cnet.com/8301-1035_3-57460125-94/t-mobiles-pricier-samsung-galaxy-s3-will-not-get-lte/
same hardware in all US S3's so theoretically even a sprint or verizon one can be flashed if its just going to be software limitations
Click to expand...
Click to collapse
The CDMA and TDMA versions are different and not compatible. A sprint or Verizon model will not work on GSM networks due to the different protocols used. AFAIK no phone is universally portable amongst US carriers.

Verizon/Sprint/US Cellular phones are 100% different in terms of radio hardware and software.
It is possible the T-Mobile/AT&T ones will likely work together, but why? Also something to consider is the AT&T Note on T-Mobile gets HORRIBLE battery life.

malaeum said:
The CDMA and TDMA versions are different and not compatible. A sprint or Verizon model will not work on GSM networks due to the different protocols used. AFAIK no phone is universally portable amongst US carriers.
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Click to collapse
You sure about this? Verizon model will have a sim card and has GSM support. Verizon will probably block T-Mobile and ATT with all of their GSM/devices.

tspx23 said:
You sure about this? Verizon model will have a sim card and has GSM support. Verizon will probably block T-Mobile and ATT with all of their GSM/devices.
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The SIM card is for LTE. The only way to get 3G on a CDMA device would be through CDMA.

joshnichols189 said:
The SIM card is for LTE. The only way to get 3G on a CDMA device would be through CDMA.
Click to expand...
Click to collapse
Not exactly true... After a "hack" to my VZW Moto Bionic and dropping in an ATT sim from a demo Galaxy Note, we got working H+ on the Bionic.
Even after hack, the Bionic doesn't appear to support T-Mobile's 1700mhz so I get EDGE only when I use the T-Mo SIM out of my Galaxy S2.
But I wont have a Verizon Galaxy S3 to play with to see how that works.

KidJoe said:
Not exactly true... After a "hack" to my VZW Moto Bionic and dropping in an ATT sim from a demo Galaxy Note, we got working H+ on the Bionic.
Even after hack, the Bionic doesn't appear to support T-Mobile's 1700mhz so I get EDGE only when I use the T-Mo SIM out of my Galaxy S2.
But I wont have a Verizon Galaxy S3 to play with to see how that works.
Click to expand...
Click to collapse
Interesting, have not heard of that one but I will take your word for it. Either way, most phones do not have AWS bands for T-Mobile unless they are T-Mobile phones.

Assuming the Verizon version has GSM 3G radios in it (what they call a "Global" phone) I don't see why even it could be flashed if someone could get the radio hacked.
For example, my current phone, the Droid 2 Global, normally runs on Verizon's CMDA bands. Being a global phone, it has GSM radios in it which can be activated if you get an unlock code from Verizon (not difficult).
Here's the catch- the baseband locks the phone so that it does not work on AT&T and T-Mobile's frequency bands! However, some clever hackers at TeamBlackHat were able to hack the baseband to allow it to work on US carriers as well.
tl;dr if the CDMA versions have GSM radios it should be feasible to make them work on AT&T and T-Mobile.

ExodusC said:
Assuming the Verizon version has GSM 3G radios in it (what they call a "Global" phone) I don't see why even it could be flashed if someone could get the radio hacked.
For example, my current phone, the Droid 2 Global, normally runs on Verizon's CMDA bands. Being a global phone, it has GSM radios in it which can be activated if you get an unlock code from Verizon (not difficult).
Here's the catch- the baseband locks the phone so that it does not work on AT&T and T-Mobile's frequency bands! However, some clever hackers at TeamBlackHat were able to hack the baseband to allow it to work on US carriers as well.
tl;dr if the CDMA versions have GSM radios it should be feasible to make them work on AT&T and T-Mobile.
Click to expand...
Click to collapse
So basically, all world phones can literally be made into world phones? Nice!

SaHiLzZ said:
It should be possible. Check out the specs of the two: gsmarena /compare.php3?idPhone1=4804&idPhone2=4803
This is EXACTLY the same as Tmobile S2 and ATT S2 LTE: gsmarena /compare.php3?idPhone1=4129&idPhone2=4303
Some awesome dev needs to do some radio hacking to make the two phones interchangeable as they did for the S2/S2 LTE.
Click to expand...
Click to collapse
You raise a really good point.
joshnichols189 said:
Verizon/Sprint/US Cellular phones are 100% different in terms of radio hardware and software.
It is possible the T-Mobile/AT&T ones will likely work together, but why? Also something to consider is the AT&T Note on T-Mobile gets HORRIBLE battery life.
Click to expand...
Click to collapse
Does the S2 and S2 LTE (skyrocket) succumb to bad battery life like the note does when their networks are interchanged?

Can I use the H/K Sprint M8 on T-Mobile and get LTE?

Looked around and not sure if this is even possible. Could I get a H/K M8, unlock it and use on T-Mobile's network to receive LTE? Thanks!

Is there a reason why you are looking at the Sprint version?
Its been argued whether the CDMA versions of the M8 are any different in hardware, but I haven't seen anything definitive either way. I'd err on the side of caution, assume the CDMA version is different hardware, and stay away from it. Buy any GSM version and you can convert it to work on T-Mobile (after s-off, unlocking the bootloader, etc.), no question there.

quailallstar said:
Looked around and not sure if this is even possible. Could I get a H/K M8, unlock it and use on T-Mobile's network to receive LTE? Thanks!
Click to expand...
Click to collapse
no, Sprint version got some weird **** to it...

redpoint73 said:
Is there a reason why you are looking at the Sprint version?
Its been argued whether the CDMA versions of the M8 are any different in hardware, but I haven't seen anything definitive either way. I'd err on the side of caution, assume the CDMA version is different hardware, and stay away from it. Buy any GSM version and you can convert it to work on T-Mobile (after s-off, unlocking the bootloader, etc.), no question there.
Click to expand...
Click to collapse
The only reason I'm looking for the Sprint version is because of the look. I like the dark back metal and gold upfront a lot. Sucks its an exclusive look only to Sprint. I read that you can flash the other non H/K models to have the same software so that is confirmed and all good.
Now I need to find someone who is using this Sprint model and can confirm it has the needed GSM radio(s) for TMO LTE.

quailallstar said:
The only reason I'm looking for the Sprint version is because of the look. I like the dark back metal and gold upfront a lot. Sucks its an exclusive look only to Sprint. I read that you can flash the other non H/K models to have the same software so that is confirmed and all good.
Now I need to find someone who is using this Sprint model and can confirm it has the needed GSM radio(s) for TMO LTE.
Click to expand...
Click to collapse
I'm pretty sure that Sprint models are CDMA only. You can't use their phones on GSM networks. I don't think what you are trying to do will work. I may be wrong here, but I really doubt I am.

xunholyx said:
I'm pretty sure that Sprint models are CDMA only. You can't use their phones on GSM networks. I don't think what you are trying to do will work. I may be wrong here, but I really doubt I am.
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This is incorrect (that the Sprint variant does not work on GSM). Both the Verizon and Sprint variants support GSM and CDMA. Folk on here (including myself) tend to refer to them as "CDMA" for simplicity; but they are in fact also compatible with GSM, as well as HSPA, LTE.
http://www.gsmarena.com/htc_one_(m8)_cdma-6233.php
Now the question is whether the difference between the GSM and "CDMA" variants are purely in software, or there is an actual hardware difference. Its been argued both way, and I haven't seen any proof either way (although my gut tells me the latter is the case). And the question relevant to the OP is whether the T-Mobile LTE bands can be "added" to the Sprint device by software.

I used a verizon LG g2 on T-mobile a few and the phone im writing on now is a verizon iPhone full lte but i dont know aboit the sprint versions

M9 Developer or M9 Unlocked Model

Verizon is going to let me choose between an unlocked phone and developer model phone. Which one should I choose? (in terms of ROM support, ease up update access, root...etc)
Nevermind, its unlocked version only. I get to try the phone out and see if it is still plagued by the blurry, color/light bleed/auto focus issue or not. If it is, they will let me get a Note 4

Balian67 said:
Verizon is going to let me choose between an unlocked phone and developer model phone. Which one should I choose? (in terms of ROM support, ease up update access, root...etc)
Nevermind, its unlocked version only. I get to try the phone out and see if it is still plagued by the blurry, color/light bleed/auto focus issue or not. If it is, they will let me get a Note 4
Click to expand...
Click to collapse
How is that going to work the dev and unlocked m9's are supposed to be gsm only meaning no cdma ? And the LTE bands for verizon are not supposed to be enabled on the non verizon versions of the m9 ?
Actually all the verizon m9's are unlocked because verizon does not sim lock phones any more they just lock the bootloaders and wont let htc dev unlock them.

M9guy said:
How is that going to work the dev and unlocked m9's are supposed to be gsm only meaning no cdma ? And the LTE bands for verizon are not supposed to be enabled on the non verizon versions of the m9 ?
Actually all the verizon m9's are unlocked because verizon does not sim lock phones any more they just lock the bootloaders and wont let htc dev unlock them.
Click to expand...
Click to collapse
Technically, All newer phones have both GSM and CDMA radios. The Qualcomm chips (from what I read) have both radios in them already. My dad has a GS4 (CDMA) and is on a GSM network in Israel. So, saying this, it only makes sense that it should be able to work. It's just weird
Ima tearing a new butthole into Verizon because of all the bullcrap they've told me (I don't know enough about the unlocked models), so you could probably count this as more crap. However, they did also offer a Galaxy Note 4 at a discount (on edge). If I get that for a total of 650 (instead of $600 for M9) or $600, should I? I love the M9's speakers with a strong passion, but I do like the bigger screen and higher resolution...let alone the better camera...I read into mods and of course with Knox and all..I dunno about root.

Balian67 said:
Technically, All newer phones have both GSM and CDMA radios. The Qualcomm chips (from what I read) have both radios in them already. My dad has a GS4 (CDMA) and is on a GSM network in Israel. So, saying this, it only makes sense that it should be able to work. It's just weird
Ima tearing a new butthole into Verizon because of all the bullcrap they've told me (I don't know enough about the unlocked models), so you could probably count this as more crap. However, they did also offer a Galaxy Note 4 at a discount (on edge). If I get that for a total of 650 (instead of $600 for M9) or $600, should I? I love the M9's speakers with a strong passion, but I do like the bigger screen and higher resolution...let alone the better camera...I read into mods and of course with Knox and all..I dunno about root.
Click to expand...
Click to collapse
Ok so lets say all of them have cdma built in and your right, so then how do you get the bands enabled for verizon LTE on a gsm m9 such as the unlocked m9 sold by htc directly ?
The posts about this on the m8 all required s-off to enable other bands such as enable the bands on a verizon m8 to get Tmobile LTE and then people still had issues having to toggle airplane mode all the time to get the Tmobile LTE back working on their verizon m8.
I had tried and tried to convert my verizon m8 to a dev edition like people did on the gsm versions which they all could but no one ever figured out how to get it done.
So my ultimate question is how would they get verizon LTE bands enabled on a gsm based carrier unlocked m9 that is not s-off ?
---------- Post added at 01:44 AM ---------- Previous post was at 01:39 AM ----------
Balian67 said:
Technically, All newer phones have both GSM and CDMA radios. The Qualcomm chips (from what I read) have both radios in them already. My dad has a GS4 (CDMA) and is on a GSM network in Israel. So, saying this, it only makes sense that it should be able to work. It's just weird
Ima tearing a new butthole into Verizon because of all the bullcrap they've told me (I don't know enough about the unlocked models), so you could probably count this as more crap. However, they did also offer a Galaxy Note 4 at a discount (on edge). If I get that for a total of 650 (instead of $600 for M9) or $600, should I? I love the M9's speakers with a strong passion, but I do like the bigger screen and higher resolution...let alone the better camera...I read into mods and of course with Knox and all..I dunno about root.
Click to expand...
Click to collapse
Oh and tear into verizon all you like bro let me help with that lol as I hate them as much as you do.
And I think the sammys have the bands enabled for basically all LTE in all the major carriers like the nexus 6 so they can run on any network.
I think they should require all phones to work on any network just like the nexus 6 so one version can work on any network, I guess we can dream right that would be my only complaint with htc that they dont enable the bands for all networks here in the USA.

M9guy said:
Ok so lets say all of them have cdma built in and your right, so then how do you get the bands enabled for verizon LTE on a gsm m9 such as the unlocked m9 sold by htc directly ?
The posts about this on the m8 all required s-off to enable other bands such as enable the bands on a verizon m8 to get Tmobile LTE and then people still had issues having to toggle airplane mode all the time to get the Tmobile LTE back working on their verizon m8.
I had tried and tried to convert my verizon m8 to a dev edition like people did on the gsm versions which they all could but no one ever figured out how to get it done.
So my ultimate question is how would they get verizon LTE bands enabled on a gsm based carrier unlocked m9 that is not s-off ?
---------- Post added at 01:44 AM ---------- Previous post was at 01:39 AM ----------
Oh and tear into verizon all you like bro let me help with that lol as I hate them as much as you do.
And I think the sammys have the bands enabled for basically all LTE in all the major carriers like the nexus 6 so they can run on any network.
I think they should require all phones to work on any network just like the nexus 6 so one version can work on any network, I guess we can dream right that would be my only complaint with htc that they dont enable the bands for all networks here in the USA.
Click to expand...
Click to collapse
1. You are probably right about the T-Mobile thing, but it IS T-mobile. I don't even think they, or sprint can keep up with the big boys. So If I got the GSM unlocked...and did the paypal buy over a year option, I wouldn't re-activate on Verizon for quite a while. I plan on going to Israel so I don't need a CDMA device for a while...Even so, the M9 has the bands for all of the networks, last time I checked. Saying that, I will already have S-OFF because it would be a dev edition, or the unlocked version that I would just S-OFF through HTC Dev. Saying ALL of this, even if I do come back to USA and CAN'T be on Verizon (whom I think is better then ATT), then I could go ATT. Ya know? That is IF I came back to the USA. So what do you think now? (With more information about the situation).

Got International HTC 10 on Ebay, doesn't get LTE on T-Mobile HELP

I bought a new HTC 10 on ebay and it's the unlocked international version. I didn't realize there is a US unlocked and International variants, I assumed carrier unlocked was an international variant. I'm on Tmobile which aparently uses some band that I'm not able to pick up and therefore I've been relegated to hspa for my data. Quite disappointing.
Can I S-Off and change to either Super CID or the TMobile CID and flash the radio and firmware for T-Mobile and get the phone to pick up the LTE so i can get my high speed data?
I can't find anywhere that tells me if the hardware is the same and that the radio is software configurable and therefore can activate the AWS bands with the correct radio/firmware/ruu or something of the like..
Did I totally blow it buying the int'l version of the 10 unlocked, or can I hack it to run properly on Tmobile LTE?

punkboyinsf said:
I bought a new HTC 10 on ebay and it's the unlocked international version. I didn't realize there is a US unlocked and International variants, I assumed carrier unlocked was an international variant. I'm on Tmobile which aparently uses some band that I'm not able to pick up and therefore I've been relegated to hspa for my data. Quite disappointing.
Can I S-Off and change to either Super CID or the TMobile CID and flash the radio and firmware for T-Mobile and get the phone to pick up the LTE so i can get my high speed data?
I can't find anywhere that tells me if the hardware is the same and that the radio is software configurable and therefore can activate the AWS bands with the correct radio/firmware/ruu or something of the like..
Did I totally blow it buying the int'l version of the 10 unlocked, or can I hack it to run properly on Tmobile LTE?
Click to expand...
Click to collapse
Yes you can do that. Get S-Off, change your CID and MID and flash US Unlocked.

xunholyx said:
Yes you can do that. Get S-Off, change your CID and MID and flash US Unlocked.
Click to expand...
Click to collapse
Very good to know. Follow up. Is this easy enough to reverse if I need to use my warranty?

punkboyinsf said:
Very good to know. Follow up. Is this easy enough to reverse if I need to use my warranty?
Click to expand...
Click to collapse
Yes, the same process but in reverse.

Tarima said:
Yes, the same process but in reverse.
Click to expand...
Click to collapse
OK. so I did all that and am now running unlocked us firmware. I think I'm having the LTE reception issues I had read about. flashing the T-Mobile ruu should fix that right?
Ps
Thanks a million for the prompt replies BTW. I've had this phone for a couple minutes and I feel good to finally get things working like they should be.

punkboyinsf said:
OK. so I did all that and am now running unlocked us firmware. I think I'm having the LTE reception issues I had read about. flashing the T-Mobile ruu should fix that right?
Ps
Thanks a million for the prompt replies BTW. I've had this phone for a couple minutes and I feel good to finally get things working like they should be.
Click to expand...
Click to collapse
I can't vouch for the ruu fixing your lte issues. I've seen mixed reporting around for stuff like this. I would try it and see if it works.

punkboyinsf said:
OK. so I did all that and am now running unlocked us firmware. I think I'm having the LTE reception issues I had read about. flashing the T-Mobile ruu should fix that right?
Ps
Thanks a million for the prompt replies BTW. I've had this phone for a couple minutes and I feel good to finally get things working like they should be.
Click to expand...
Click to collapse
Well, T-mobile has been doing upgrades on the network and there has been a lot of space weather causing power outages and hiccups in other electronic devices. My home WiFi has been connecting and dropping left and right! I too have the T-mobile version of the HTC 10 but I did unlock the SIM and did the full conversion to the North American unlocked developer version and it has been absolutely issue free!! You might want to double check to see if the radios in the International version are using band 12,and band 4 for LTE... I lost my LTE after a long run doing the same thing with the original HTC One M7

I feel your pain
punkboyinsf said:
I bought a new HTC 10 on ebay and it's the unlocked international version. I didn't realize there is a US unlocked and International variants, I assumed carrier unlocked was an international variant. I'm on Tmobile which aparently uses some band that I'm not able to pick up and therefore I've been relegated to hspa for my data. Quite disappointing.
Can I S-Off and change to either Super CID or the TMobile CID and flash the radio and firmware for T-Mobile and get the phone to pick up the LTE so i can get my high speed data?
I can't find anywhere that tells me if the hardware is the same and that the radio is software configurable and therefore can activate the AWS bands with the correct radio/firmware/ruu or something of the like..
Did I totally blow it buying the int'l version of the 10 unlocked, or can I hack it to run properly on Tmobile LTE?
Click to expand...
Click to collapse
Unfortunately HTC enabled/disabled certain LTE bands in the modem firmware depending on the region. The unlocked international doesn't play nice with T-mobile AWS. Flashing the RUU doesn't change the NV values in the modem, so you'll still be stuck with HSPA for the most part. I'm in AZ, and I can get band 12 and sometimes the non-AWS band 4, but neither are super fast. The snapdragon 820 does support all the necessary bands, they just need to be unlocked. We have the issue that qualcomm has put protection on the LTE firmware, so the old way of using QXDM/QPST doesn't work like it did on the 810 and earlier chipsets. There's some other threads on here that thing a custom kernel might open up the possibility of using the QXDM to edit NV values to unlock the necessary bands.

This seems to be the root for S8+

Has anyone here tried the new root file for Verizon S8+
https://download.chainfire.eu/1080/...to-Root-dream2qltesq-dream2qltesq-smg955u.zip

It will only work with an unlocked bootloader. Since all US Snapdragon based S8's have a locked bootloader it useless.

So why has Chainfire made this at all if it does not work or will brick your phone? I should ask him but not sure he will answer.

photolarry said:
So why has Chainfire made this at all if it does not work or will brick your phone? I should ask him but not sure he will answer.
Click to expand...
Click to collapse
[emoji19] smh
Sent from my SM-G955U using Tapatalk

photolarry said:
So why has Chainfire made this at all if it does not work or will brick your phone? I should ask him but not sure he will answer.
Click to expand...
Click to collapse
He clearly states that it only works with an unlocked bootloader. If the snapdragon versions of the S8/S8+ had an unlocked bootloader it would work. Not sure why you could have an issue with him.

nrage23 said:
He clearly states that it only works with an unlocked bootloader. If the snapdragon versions of the S8/S8+ had an unlocked bootloader it would work. Not sure why you could have an issue with him.
Click to expand...
Click to collapse
The U version isn't ever unlocked. Not with him. I'm just confused why it seems this would work on that model but it doesn't

If the bootloader ever gets unlocked by any means, it will work.
Sent from my SM-G955U using Tapatalk

VoxBox101 said:
If the bootloader ever gets unlocked by any means, it will work.
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
You missed my point and question to him. Which is "U" model is LOCKED because it is all phones inside the USA that are distributed by all 4 major carriers. So there is no such thing as SM-G955U which is unlocked. Does not exist. Thus I wanna know why there is even a zip file which chainfire created since it cannot be used on any of these phones. And why would it "get unlocked"....it is done at the factory. Only way to "unlock" it is to use a root method like was done on S7, where it basically involves flashing an engineering boot image/kernel that has root. At some point, this probably will be made and then using same modified ODIN (PrinceComsy) would potentially be the solution.

photolarry said:
You missed my point and question to him. Which is "U" model is LOCKED because it is all phones inside the USA that are distributed by all 4 major carriers. So there is no such thing as SM-G955U which is unlocked. Does not exist. Thus I wanna know why there is even a zip file which chainfire created since it cannot be used on any of these phones. And why would it "get unlocked"....it is done at the factory. Only way to "unlock" it is to use a root method like was done on S7, where it basically involves flashing an engineering boot image/kernel that has root. At some point, this probably will be made and then using same modified ODIN (PrinceComsy) would potentially be the solution.
Click to expand...
Click to collapse
I will try and clear up some confusion. All US snapdragon versions of the S8+ have the same model number SM-G955U. There is an "unlocked" SM-G955U version of the S8+ in the US. It is carrier unlocked not bootloader unlocked. Apparently the CSC file carries the carrier information in the firmware. Also the S7 was rooted but never bootloader unlocked. So you could use most root apps but you could not modify any system files. The root was achieved with an engineering kernel and was not very useful.(ie bad battery life, phone getting hot and unstable). You could however flash any US S7 to any carrier or even the Unlocked firmware.

But if you cannot flash even the csc, how do you gain root access when Odin basically does nothing. That's my question and point. Seems that if I stick with Galaxy phones that I'm never going to attain root again. Probably because they don't want risks of pay apps being misused. I have one app that refuses to even run if I have usb debugging on. Vendors are getting smarter about locking things down.

It's not Samsung's fault...it is Verizon, AT&T, Sprint and T-Mobile. I can't even take my Verizon phone and change it to T-Mobile. That's ridiculous!

If LG lets it's consumers unlock there bootloader then why don't samsung? I'm selling my ccarrier unlocked s8+ and buying a unlocked g6. Screw this crap. I hope samsung goes bankrupt! SAMSUNG ALLOW US TO UNLOCK OUR BOOTLOADERS.
I wish my S8+ was rooted?

kbatrph said:
It's not Samsung's fault...it is Verizon, AT&T, Sprint and T-Mobile. I can't even take my Verizon phone and change it to T-Mobile. That's ridiculous!
Click to expand...
Click to collapse
The reason you can't do this is the bands are different (I believe). Or, at least Verizon is CDMA while T-Mobile is GSM. I don't know much about the differences between CDMA & GSM, but I know that CDMA phones won't work on GSM networks & vice versa. That's why Verizon phones won't work on T-Mobile. Hopefully that (kinda) cleared it up for you.

mybabyloves said:
The reason you can't do this is the bands are different (I believe). Or, at least Verizon is CDMA while T-Mobile is GSM. I don't know much about the differences between CDMA & GSM, but I know that CDMA phones won't work on GSM networks & vice versa. That's why Verizon phones won't work on T-Mobile. Hopefully that (kinda) cleared it up for you.
Click to expand...
Click to collapse
My goodness you could not be any more wrong..... That is no longer the case anymore. Verizon phones work on T-Mobile and all GSM carriers. I should know since I was with Verizon and I switched a while back but am now back on Verizon. Some phones from T-mobile won't work with Verizon but some do. It just depends on the phone and what bands it has. Like the S8 from T-Mobile will work on Verizon but an iPhone 7 from T-Mobile won't because it doesn't have CDMA bands. It's simple research

blackra1n said:
My goodness you could not be any more wrong..... That is no longer the case anymore. Verizon phones work on T-Mobile and all GSM carriers. I should know since I was with Verizon and I switched a while back but am now back on Verizon. Some phones from T-mobile won't work with Verizon but some do. It just depends on the phone and what bands it has. Like the S8 from T-Mobile will work on Verizon but an iPhone 7 from T-Mobile won't because it doesn't have CDMA bands. It's simple research
Click to expand...
Click to collapse
Really?? Man, I feel so stupid about that, sorry =/ I've been researching it, but all of what I've read pointed to what I said... thank you very much for correcting me ? it'll def help me in my journey to become a phone repair specialist! ? sorry people I might've confused.... I'm just an idiot - don't listen to me

mybabyloves said:
Really?? Man, I feel so stupid about that, sorry =/ I've been researching it, but all of what I've read pointed to what I said... thank you very much for correcting me it'll def help me in my journey to become a phone repair specialist! sorry people I might've confused.... I'm just an idiot - don't listen to me
Click to expand...
Click to collapse
CDMA is only for 3G. With 4G, Verizon is using LTE GSM (same with AT&T, T-Mobile).
Verizon LTE covers over 98% of their network, but there are still some remote places where there is only CDMA coverage.
Verizon is moving away from CDMA and it will be retired by 2018.
So as long as you don't mind not having CDMA in a few places, any LTE GSM phone with Band 13 would work with Verizon.
Look at HTC U11, it doesn't have CDMA, but it's still advertised as "Verizon certified".
Sadly, the Internationals versions of S8/S8+ don't have band 13. But fortunately, all US versions have both bands 13 and CDMA support. That's why you can switch to any carrier as long as it's a US version.

mybabyloves said:
Really?? Man, I feel so stupid about that, sorry =/ I've been researching it, but all of what I've read pointed to what I said... thank you very much for correcting me it'll def help me in my journey to become a phone repair specialist! sorry people I might've confused.... I'm just an idiot - don't listen to me
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No worries mate. Just wanted to put that out there in case anyone become confused. I meant no disrespect
---------- Post added at 06:28 PM ---------- Previous post was at 06:25 PM ----------
neozen21 said:
CDMA is only for 3G. With 4G, Verizon is using LTE GSM (same with AT&T, T-Mobile).
Verizon LTE covers over 98% of their network, but there are still some remote places where there is only CDMA coverage.
Verizon is moving away from CDMA and it will be retired by 2018.
So as long as you don't mind not having CDMA in a few places, any LTE GSM phone with Band 13 would work with Verizon.
Look at HTC U11, it doesn't have CDMA, but it's still advertised as "Verizon certified".
Sadly, the Internationals versions of S8/S8+ don't have band 13. But fortunately, all US versions have both bands 13 and CDMA support. That's why you can switch to any carrier as long as it's a US version.
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My point exactly about the S8's. US variants are all the same no matter what carrier. All Google phones after the Nexus 6 are the same way. The Nexus 6 worked on all US carriers no matter where you got it from and it's like that all the way to the new Pixel phones. Where as iPhone's, just as an example, have different bands when it comes to different carriers. Unlocked, Verizon, and Sprint iPhone's have all bands both CDMA and GSM where as the GSM ones like those bought straight from T-Mobile or AT&T only have the GSM bands.

mybabyloves said:
Really?? Man, I feel so stupid about that, sorry =/ I've been researching it, but all of what I've read pointed to what I said... thank you very much for correcting me ? it'll def help me in my journey to become a phone repair specialist! ? sorry people I might've confused.... I'm just an idiot - don't listen to me
Click to expand...
Click to collapse
You're NOT stupid! I had no idea either. I know that I tried to switch my Verizon S8+ to T-Mobile but it wouldn't recognize my IMEI so I just figured the two networks were different

I have a unlocked verizon(xfinity mobile) s8plus on tmobile right now.. The phone had no issues on setup to go on the tmobile network..

https://forum.xda-developers.com/ga...root-g955u-g955u1-snapdragon-sampwnd-t3658911
So this has changed?