Develop Bugs

T-Mobile M8 patch 4 Verizon M8

Is there a patch to make my vzw M8 work like it was a native Tmo M8?

No. Hardware is different.
Verizon has CDMA chipset and the TMO verison is a GSM chipset.

IAmSixNine said:
No. Hardware is different.
Verizon has CDMA chipset and the TMO verison is a GSM chipset.
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That's not true...
My phone is Fully unlocked and gets everything from Edge to Legit LTE.
My phone works. I just need it to work a bit better.

And the reason you want it to work better is because its not the correct version for the carrier you want it to work on.
http://www.gsmarena.com/compare.php3?idPhone1=6233&idPhone2=6074
The bands are almost identical with the Verizon unit missing 1700mhz on the HSDPA side.
Either way if you want it to work like its supposed to get the branded one. Unlocking will work but in most cases something is always missing.
could be specific software, or the way the device works with the network, or an entire band or what ever.
Bottom line is ditch the unlocked verizon and go with a branded tmobile unit.

ericerk said:
That's not true...
My phone is Fully unlocked and gets everything from Edge to Legit LTE.
My phone works. I just need it to work a bit better.
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Since you seem to already know the answer then go ahead and flash a tmobile or any other gsm rom to your phone and see how fast you brick it.

IAmSixNine said:
And the reason you want it to work better is because its not the correct version for the carrier you want it to work on.
http://www.gsmarena.com/compare.php3?idPhone1=6233&idPhone2=6074
The bands are almost identical with the Verizon unit missing 1700mhz on the HSDPA side.
Either way if you want it to work like its supposed to get the branded one. Unlocking will work but in most cases something is always missing.
could be specific software, or the way the device works with the network, or an entire band or what ever.
Bottom line is ditch the unlocked verizon and go with a branded tmobile unit.
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Click to collapse
Now that makes sense.
What a bummer.

Using CyanogenMod M9 with Verizon M8 on Tmobile
I have found that this works pretty well for me. CyanogenMod 11 M9 (I cant link to it, forum wont allow me to)
I have not had any issues with that build using a Verizon M8 on the Tmobile network.

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!
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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.
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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.
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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

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.
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[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.
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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.
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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.
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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!
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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.
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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
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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?

[Q] Best way to get a phone that will work with Verizon and all LTE bands overseas

I've really enjoyed my S7 and want to upgrade to the S9. Later in the year I'll be overseas for almost a year, so I want something that will work with all Verizon bands of LTE, but also not have a firmware lock that would cause it to not work on other bands of LTE overseas. (planning to just use prepaid dataplan sim cards overseas)
I think my two options are to either get a US 'unlocked' version or wait for the 'international' version. My understanding is the primary differences between the unlocked and international version is the 2G/3G coverage for CDMA and possibly slightly different hardware. I'd rather have a phone with CDMA backwards capability, but my prime concern lacking full access to all LTE bands available wherever I am.
I'm not really interested in going any route that would require me to root the phone if there is a way to do it without.

Well the only way to get VZW compatibility is the VZW phone or a US unlocked model. So you're looking at the US Unlocked model at this point.

A listing of all the different model numbers available (per country and carrier) is available here: https://www.techwalls.com/samsung-galaxy-s9-sm-g960-g965-model-number-differences/
You will probably want to get the phone that works with your primary location the most. I am not sure which countries use which frequencies for LTE in Europe; you will need to research that to see what you may be missing out on.
With my T-Mobile S7, I haven't had any issues when traveling in Europe or Asia. It connects to LTE usually.

So I just did a deep dive of that list:
It looks like the Verizon and Unlocked versions are almost identical (the unlocked US version has B46(5200) 4G TDD LTE, but I'm not sure anyone who uses it)
Looking at 4G FDD LTE it looks like a Verizon or US unlocked phone will have almost complete coverage around the world, notable gaps are B30(2300) in China/Canada/US AT&T, B32(1500) in UK and B71(600) (US Tmobile). I thought that was a bit confusing as you'd expect a US Unlocked phone to service all LTE bands available in the US yet it lacks AT&T and Tmobile bands.
So based on all that information looks like I should just get an unlocked US phone to be totally safe, and I'd likely also be fine getting a Verizon version also.

StykerB said:
Well the only way to get VZW compatibility is the VZW phone or a US unlocked model. So you're looking at the US Unlocked model at this point.
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Relcan said:
So I just did a deep dive of that list:
It looks like the Verizon and Unlocked versions are almost identical (the unlocked US version has B46(5200) 4G TDD LTE, but I'm not sure anyone who uses it)
Looking at 4G FDD LTE it looks like a Verizon or US unlocked phone will have almost complete coverage around the world, notable gaps are B30(2300) in China/Canada/US AT&T, B32(1500) in UK and B71(600) (US Tmobile). I thought that was a bit confusing as you'd expect a US Unlocked phone to service all LTE bands available in the US yet it lacks AT&T and Tmobile bands.
So based on all that information looks like I should just get an unlocked US phone to be totally safe, and I'd likely also be fine getting a Verizon version also.
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Click to collapse
So I'm new to Android but i use Verizon prepaid. Will I lose anything by going with the unlocked version or should i stick with a Verizon S9?
I don't use video calling. All i do is text and talk but I've heard that people on Verizon prepaid have issues with unlocked Android phones.
Thanks

Would Wifi Calling work with the US unlocked on verizon? I thought that required a Verizon FW to be flashed. I imagine all the other features such as voLTE / HD calling, etc to work on the US unlocked.

testinguser said:
Would Wifi Calling work with the US unlocked on verizon? I thought that required a Verizon FW to be flashed. I imagine all the other features such as voLTE / HD calling, etc to work on the US unlocked.
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Curious about that also

testinguser said:
Would Wifi Calling work with the US unlocked on verizon? I thought that required a Verizon FW to be flashed. I imagine all the other features such as voLTE / HD calling, etc to work on the US unlocked.
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Throwinrocks said:
Curious about that also
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I did a cursory review of the wifi-calling FAQ on their website. They don't mention anything about compatibility with Unlocked versions of phones (that I saw). I'd call tech support to ask, but I'd expect there to be a 50% chance of getting the wrong answer from the tech based on my interactions with their support.
There might be some good experience based anecdotes in the Galaxy S8 forum, if it works on an unlocked S8 its a safe bet it will work on an unlocked S9
I think I'll ask in the Verizon subreddit, it seems like they normally have really good information as well.
I'm mostly curious about the LTE TDD Band 46 (5200) - its the only band an unlocked US phone has that a Verizon phone doesn't. 5200 is in the U-NII frequency range, no cellphone service providers use it, but I wonder if it may be used for local LTE networks in the near future. The other advantage is avoiding all the verizon bloat wear, but that may be what allows the Wifi Calling to work!

All this has me thinking I might have to add the extra $80 and just buy the Verizon version. I don't get phones on contract and I've always just paid full price. (Page 2 404 error?)

Apparently the Nov/Dec Samsung s8 firmware update added an option for BYOD carrier provisioning for unlocked s8. Given the similarity, I'd imagine the same to be true for s9. Can someone who has an unlocked s8 confirm?

Well after a little more research I see that if you use Verizon prepaid you lose visual voicemail and WiFi calling even if you use a Verizon phone so there's no need in me paying extra for a Verizon S9. Unlocked it is.

Throwinrocks said:
Well after a little more research I see that if you use Verizon prepaid you lose visual voicemail and WiFi calling even if you use a Verizon phone so there's no need in me paying extra for a Verizon S9. Unlocked it is.
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You might wanna check this as Verizon is starting to implement network locks on some devices as to deter thefts more
Dont know when or what devices but it was a statement Verizon made

So, you're saying the prepaid SIM might not work in an unlocked S9?
I don't think Verizon is keeping Verizon prepaid SIMS from working in unlocked phones they are just locking their phones like Sprint and AT&T still do.
I had no problems with my unlocked Pixel 2 XL that I purchased from Google and my Verizon prepaid, just no visual voicemail.

Recommended Rootable Verizon Phones?

Hello, I have been with Verizon the last few years and I'm in the market for a new phone. I see on SlickDeals that there is a deal for the Verizon Samsung S10/S10+, but after reading through some of the posts, it seems you can't root the Verizon S10/S10+.
Since I don't need the latest and greatest phone from Verizon, are there any 'older', new in-store models that can be rooted so that I can install a custom ROM, etc?
Thanks in advance!

Your best bet is to get another phone that's not Verizon branded and just activate it on Verizon. You'd be going back a few years to get a Verizon phone that's rootable.

Thank you for this information... a couple of things getting another phone that is not Verizon branded:
- Previously, one would need to make sure they get a 'CDMA' (vs GSM) phone, but is there any technology, etc I need to look for when trying to find a non-Verizon phone?
- I assume if I get a 'non' branded Verizon phone, that some of the Verizon specific features may not work, e.g. WiFi calling, etc?

gil_happy said:
Thank you for this information... a couple of things getting another phone that is not Verizon branded:
- Previously, one would need to make sure they get a 'CDMA' (vs GSM) phone, but is there any technology, etc I need to look for when trying to find a non-Verizon phone?
- I assume if I get a 'non' branded Verizon phone, that some of the Verizon specific features may not work, e.g. WiFi calling, etc?
Click to expand...
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I can only answer the 2nd part of your question. Once you activate it on a Vzw sim you can flash Vzw firmware and get all the same features

Cyclone Emperor said:
I can only answer the 2nd part of your question. Once you activate it on a Vzw sim you can flash Vzw firmware and get all the same features
Click to expand...
Click to collapse
Thanks for this... that makes sense. The only other things is regarding the Verizon frequency bands - I'm guessing some phones may not have or support all of the Verizon frequency bands.

gil_happy said:
Thanks for this... that makes sense. The only other things is regarding the Verizon frequency bands - I'm guessing some phones may not have or support all of the Verizon frequency bands.
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I have the international unlocked model of the s10+ U1 version on Verizon and yes maybe one or two LTE bands aren't supported but i get 82Mbps down and 12Mbps up depending on location