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Hey guys, I'm getting my hands on my friend's Galaxy S4. He is on an AT&T plan and got then phone from them through an upgrade. I personally prefer Verizon. I was wondering if I could get some help on making his phone work for me. I have a SIM card and everything, currently using a RAZR MAXX. I've done a little looking around, and from what I gathered, the phone is capable of working with verizon, but I'll have to load a different kernel and ROM onto it. I've looked through http://forum.xda-developers.com/showthread.php?t=2295557 that thread and found some nice info, but I'm not yet confident enough in my knowledge to go through with it. I've decided on the http://forum.xda-developers.com/showthread.php?t=2305781 CLEANROM 1.6.5, but I don't know what else I'm going to need to have in order to make this phone work for me. I also don't know if I'll need to download the Verizion or the AT&T version of this. Thanks for all the help, I'm really wanting to make this work for me so I can actually get a powerhouse of a phone.
Xray55 said:
Hey guys, I'm getting my hands on my friend's Galaxy S4. He is on an AT&T plan and got then phone from them through an upgrade. I personally prefer Verizon. I was wondering if I could get some help on making his phone work for me. I have a SIM card and everything, currently using a RAZR MAXX. I've done a little looking around, and from what I gathered, the phone is capable of working with verizon, but I'll have to load a different kernel and ROM onto it. I've looked through http://forum.xda-developers.com/showthread.php?t=2295557 that thread and found some nice info, but I'm not yet confident enough in my knowledge to go through with it. I've decided on the http://forum.xda-developers.com/showthread.php?t=2305781 CLEANROM 1.6.5, but I don't know what else I'm going to need to have in order to make this phone work for me. I also don't know if I'll need to download the Verizion or the AT&T version of this. Thanks for all the help, I'm really wanting to make this work for me so I can actually get a powerhouse of a phone.
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Nope. it won't work.
xuanphucn said:
Nope. it won't work.
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Is what I read about on the post I linked not true then?
Xray55 said:
Is what I read about on the post I linked not true then?
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Your link is to a thread regarding other variants of S4 roms. Although you can use other S4 roms on the i337, the phone wont work on verizon carrier.
Kaze105 said:
Your link is to a thread regarding other variants of S4 roms. Although you can use other S4 roms on the i337, the phone wont work on verizon carrier.
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I'm not sure about that. ROM shouldn't matter too much, you just have to have it SIM unlocked and I believe it won't work too well due to the different frequencies between carriers and so you may not get LTE or something. Maybe someone can correct me though.
Sent from my GT-I9505 using xda app-developers app
Verizon/Sprint phones use CDMA.
ATT/T-Mobile use GSM
I don't think you can use a CDMA phone on a GSM network and vice versa.
EDIT:
Per the replies below, it looks like it ispossible.
Here is a thread from the Verizon forums.
Also, if this WIKI page is correct, the Verizon S4 has both CDMA and GSM radio's where the ATT S4 only has a GSM radio.
The first thing to identify on the phone is whether or not it is on the stock AT&T ROM and what version that ROM is. If it is I337UCUAMF3 then changing the bootloader/kernal/rom is not even an option to begin with which means there would be no way to change out the modem to support other carrier bands (such as those used by Verizon). On top of that, although I have heard that the modem hardware is the same on all versions of the S4 I have not heard anyone confirm that they have successfully enabled CDMA services on the I337.
rayburne said:
Verizon/Sprint phones use CDMA.
ATT/T-Mobile use GSM
I don't think you can use a CDMA phone on a GSM network and vice versa.
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Click to collapse
There are some that work on other networks without the need for modem changes. I read about some using the Verizon on AT&T, and I used the droid Bionic, a Verizon exclusive with a locked boot loader, on AT&T.
Sent from my SGH-I337 using xda app-developers app
The strange thing is you can use a Verizon S4 on AT&T but you can't do it the other way around. Verizon phones all come unlocked, allowing you to use the phone anywhere around the world.
The AT&T S4 does not contain the CDMA chip allowing you to use it on the Verizon network, plus it has to do something with IMEI. If you give the IMEI to Verizon, they won't be able to locate which device you are trying to activate because it's not in the system. But if you use a Verizon S4 and put in a AT&T SIM card, you don't have to register the IMEI with AT&T or T-Mobile.
emckai said:
The strange thing is you can use a Verizon S4 on AT&T b.
you can't do it the other way around. Verizon phones all come unlocked, allowing you to use the phone anywhere around the world.
The AT&T S4 does not contain the CDMA chip allowing you to use it on the Verizon network, plus it has to do something with IMEI. If you give the IMEI to Verizon, they won't be able to locate which device you are trying to activate because it's not in the system. But if you use a Verizon S4 and put in a AT&T SIM card, you don't have to register the IMEI with AT&T or T-Mobile.
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I can confirm that this is true about the verizon s4. I have a Verizon s4 and have used AT&T and straight talk on it. My brother uses that phone daily on his AT&T account.
I will test my AT&T s4 when I get around to finding my sim card.
sundigen said:
I can confirm that this is true about the verizon s4. I have a Verizon s4 and have used AT&T and straight talk on it. My brother uses that phone daily on his AT&T account.
I will test my AT&T s4 when I get around to finding my sim card.
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I'm pretty sure you won't be able to use an AT&T S4 on Verizon because the AT&T S4 doesn't have the CDMA capabilities.
emckai said:
I'm pretty sure you won't be able to use an AT&T S4 on Verizon because the AT&T S4 doesn't have the CDMA capabilities.
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Yea I noticed that the ATT S4 doesn't have everything that the Verizon S4 has in the service menu. Like I can turn on all the different bands in the service menu, but on my ATT S4 I get restrictions on wcdma.
I'm new to all this. I traded a iPhone for the ATT version because I couldn't figure out how to make the Verizon version work on straight talk..
Not two days after I have the ATT I somehow got it working... Lol. So now I have two with unlocked bootloaders and sum unlocked...
sundigen said:
Yea I noticed that the ATT S4 doesn't have everything that the Verizon S4 has in the service menu. Like I can turn on all the different bands in the service menu, but on my ATT S4 I get restrictions on wcdma.
I'm new to all this. I traded a iPhone for the ATT version because I couldn't figure out how to make the Verizon version work on straight talk..
Not two days after I have the ATT I somehow got it working... Lol. So now I have two with unlocked bootloaders and sum unlocked...
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Methods used to obtain this?
I am I believe sim unlocked because I no longer see the prompt for password apon boot but the verizon doesn't connect.
Thank you in advance!
Just moved and tmobile service is horrible here. I have to switch to verizon. I got my tmobile s7 unlocked and have heard different feedback as to whether or not it will work with verizon. Some say yes, some no, and others have said it will but not with 3g signals.
Anyone know the truth?
I am almost positive the T-Mobile (and AT&T) versions do not have the CDMA radios enabled, and Verizon (and Sprint) need CDMA.
Up
meyerweb said:
I am almost positive the T-Mobile (and AT&T) versions do not have the CDMA radios enabled, and Verizon (and Sprint) need CDMA.
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Well you're almost positive because you've never tried it lol which is a negative. Just flash the unlocked US firmware.
How to enable the cdma? Can I root it and flash a Verizon firmware?
phenixof4 said:
How to enable the cdma? Can I root it and flash a Verizon firmware?
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you have to flash the SM-G935U over the SM-G935T. And that should take care of the problem. Just make sure that you unlock your phone via the t mobile unlock app. otherwise you wont be able to use other carriers signal.
here is a link where you can get it the SM-G935U
https://samsung-firmware.org/model/SM-G935U/
So by flashing the verizon firmware on an unlocked tmobile s7 edge, you should be able to use it on verizon?
Thanks!
re: tmobile on verizon
jwjones2 said:
So by flashing the verizon firmware on an unlocked tmobile s7 edge, you should be able to use it on verizon?
Thanks!
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Absolutely not, it will NOT work but if it was the other way around
and you wanted a verizon s7 edge phone and use an at&T or
t-mobile sim then it would work. The verizon s7 edge has a sim
slot which is not used if it's on the verizon network.
All S7 Edge Verzion phones are sim unlocked.
Good luck, have a great day!
Thank you for the help!
edgtv said:
you have to flash the SM-G935U over the SM-G935T. And that should take care of the problem. Just make sure that you unlock your phone via the t mobile unlock app. otherwise you wont be able to use other carriers signal.
here is a link where you can get it the SM-G935U
is there a step by step process to unlock and setup/flash/install phone completely to be able to use with Verizon?
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How will i get software updates now that my unlocked AT&T S7 edge now that I'm on Tmobile with it?
I'm in the same situation.
Sent from my SAMSUNG-SM-G935A using XDA-Developers mobile app
I just got rid of my AT&T edge and got a tmobile one, I wasnt about to go to best buy and get updates all the time like I was told by samsung
You need an AT&T sim it doesn't have to be activated. Im using mine on cricket and got my latest OTA by putting my deactivated AT&T sim and using my wifi to download. I did have to check twice and reboot once to trigger the update. If you change the time in settings up a day you don't have to wait 24hrs to recheck for update.
AndreaCristiano said:
How will i get software updates now that my unlocked AT&T S7 edge now that I'm on Tmobile with it?
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I have an unlocked AT&T S7 Edge and use it both on Rogers and AT&T, I simply change the SIM depending on where I am. The updates still come from AT&T regardless of where I check for them.
Sword Fish said:
I have an unlocked AT&T S7 Edge and use it both on Rogers and AT&T, I simply change the SIM depending on where I am. The updates still come from AT&T regardless of where I check for them.
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you have an unlocked phone, the updates come from samsung no matter what sim is in the phone.
Milimbar said:
you have an unlocked phone, the updates come from samsung no matter what sim is in the phone.
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No, I have an AT&T phone that I unlocked and my updates come from AT&T.
Sword Fish said:
No, I have an AT&T phone that I unlocked and my updates come from AT&T.
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Fair enough.
You still get your updates when you have the AT&T sim in the phone.
I do not have AT&T service at all and am totally unable to get any updates.
Milimbar said:
Fair enough.
You still get your updates when you have the AT&T sim in the phone.
I do not have AT&T service at all and am totally unable to get any updates.
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I am in Canada with my Rogers sim installed and received the latest update from AT&T on Friday last week. I have received multiple updates from AT&T when in Canada with my Rogers sim installed since getting this phone.
Sword Fish said:
I am in Canada with my Rogers sim installed and received the latest update from AT&T on Friday last week. I have received multiple updates from AT&T when in Canada with my Rogers sim installed since getting this phone.
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I have been unable to get even one update on 4 phones with a Cricket Wireless SIM in.
I dont understand it, AT&T Owns Cricket, you would think it should work without any issues.
I have a very interesting question regarding on using tee AT&T variant of this phone on the T-Mobile network. As you may have noticed, AT&T is finally offering Wi-Fi Calling on their network, and this phone is compatible. My question is:
Does the T-Mobile Wi-Fi calling work on the AT&T variant of this phone?
Does the AT&T Wi-Fi calling work on the T-Mobile variant of this phone?
If you flash the U firmware, you'll get wifi calling, VoLTE, and OTA updates. There is a thread in one of the other AT&T forums that has instructions.
http://forum.xda-developers.com/showthread.php?t=3411451
Sent from my SM-G935U using XDA-Developers mobile app
You could also go another route and flash the t-mobile firmware on the at&t variant, it works quite well and is the equivalent of the U firmware with t-mobile account management, voice mail, and features.
I have s7edge at&t ..it don't have any volte option
I want to enable volte option. On my mobile
If i flash sm-935U on my at&t will it activate VOLTE OPTION
If you switched to TMobile just ODIN the Tmobile Firmware and you will get the updates OTA.
how do i flash the tmboile firmware to my at&t s7 edge.. i have a att s7 edge and want to flash tmobile firmware to it and use on tmobile with wifi calling and the works.....any links with instructions and firmware. thanks
maddytech said:
I have s7edge at&t ..it don't have any volte option
I want to enable volte option. On my mobile
If i flash sm-935U on my at&t will it activate VOLTE OPTION
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Yeah you do, its under Connections/Mobile Networks/Mobile Data its called Enhanced LTE services....I actually shut mine off and its saving quite a bit of battery it seems and I havent even noticed a difference in phone call quality, seems kind of useless
you need to get or buy a Gophone simcard or buy a gophone (comes with Gophone simcard), just activate the gophone simcard, you dont need to pay money on it. i never able to get att software update using Cricket simcard but when i put a activated gophone simcard (no need to pay money on it), it lets me update to the latest att firmware ! funny, how gophone and cricket are owned by parent company att but gophone lets me update and cricket can NOT.
I've searched and cant find anything but the bands for either service. Which they use a lot of the same. Is a T-Mobile branded S8 usable on Verizon? Full 4G or not? Thanks!
its a gsm device. i believe the internet data part will work but not phone calls
the_rooter said:
its a gsm device. i believe the internet data part will work but not phone calls
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Darn. I was hoping since they all have the same model number that it would be possible.
steven1193 said:
I've searched and cant find anything but the bands for either service. Which they use a lot of the same. Is a T-Mobile branded S8 usable on Verizon? Full 4G or not? Thanks!
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Call Verizon with your IMEI # and they can check if it's compatible with their network.
Sent from my SM-G950U using Tapatalk
steven1193 said:
I've searched and cant find anything but the bands for either service. Which they use a lot of the same. Is a T-Mobile branded S8 usable on Verizon? Full 4G or not? Thanks!
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If you unlock it...it will work just fine.
steven1193 said:
I've searched and cant find anything but the bands for either service. Which they use a lot of the same. Is a T-Mobile branded S8 usable on Verizon? Full 4G or not? Thanks!
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Did you ever figure out if this was possible? I can't seem to find a definitive answer.
Bump - anyone know if this will work?
As soon as I get mine unlocked I'll let you know as I have Verizon. All s8 models are the same but I'm sure the T-Mobile software has blocked Verizon bands. I'm sure if you flash Verizon software it will work just fine.
I have an unlocked T-Mobile Galaxy S8+ and it does not work on Verizon. I went into a Verizon store and they tried for an hour to activate the phone to no avail. They tried multiple different SIM cards and none of them worked. If anyone has better luck, please let me know. But they weren't able to figure it out at Verizon.
herbn said:
I have an unlocked T-Mobile Galaxy S8+ and it does not work on Verizon. I went into a Verizon store and they tried for an hour to activate the phone to no avail. They tried multiple different SIM cards and none of them worked. If anyone has better luck, please let me know. But they weren't able to figure it out at Verizon.
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You need an unlocked Tmobile S8 or S8 plus.
Read the instruction in "Flash any carrier 100%" to flash to the carrier you desired, activate all bands.
Then use it on Verizon.
You need to flash your phone to Verizon to work. I did the exact opposite actually. I bought a Verizon device and flashed it fully to T-Mobile. Works perfect on T-Mobile because every US Galaxy S8 for the major carriers is SM-G950U. They support each other's bands, their just disabled by the carrier firmware.
ItzApp said:
You need to flash your phone to Verizon to work. I did the exact opposite actually. I bought a Verizon device and flashed it fully to T-Mobile. Works perfect on T-Mobile because every US Galaxy S8 for the major carriers is SM-G950U. They support each other's bands, their just disabled by the carrier firmware.
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Wifi calling too? Digits?
Sent from my SM-G955U using Tapatalk
blaine07 said:
Wifi calling too? Digits?
Sent from my SM-G955U using Tapatalk
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Don't know about Digits because I don't use it, but Wi-Fi calling does work. I get the T-Mobile boot logo too.
How do I flash verizon firmware to an unlocked mobile s8?
Ari2020 said:
How do I flash verizon firmware to an unlocked mobile s8?
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I did not have any luck flashing it to the official Verizon Firmware, but I was able to flash it to the G955U1 firmware. The official unlocked US Firmware. Make sure your t mobile device is SIM unlocked by TMOBILE before you do this.
1. SIM unlock device by tmobile (pay off device, meet the 40 day requirement, etc).
2. Flash to G955U1 (S8+) or G950U1 (S8).
3. Insert Verizon SIM or ATT or any SIM.
4. Your phone will give you pop up warning saying it needs to restart to configure the new SIM.
5. Enjoy your new carrier.
Did you use a Verizon SIM and did you get both VoLTE and WiFi calling to work with the G955U1 FW?
my 2 cents
Aephel said:
I did not have any luck flashing it to the official Verizon Firmware, but I was able to flash it to the G955U1 firmware. The official unlocked US Firmware. Make sure your t mobile device is SIM unlocked by TMOBILE before you do this.
1. SIM unlock device by tmobile (pay off device, meet the 40 day requirement, etc).
2. Flash to G955U1 (S8+) or G950U1 (S8).
3. Insert Verizon SIM or ATT or any SIM.
4. Your phone will give you pop up warning saying it needs to restart to configure the new SIM.
5. Enjoy your new carrier.
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Click to collapse
equake said:
Did you use a Verizon SIM and did you get both VoLTE and WiFi calling to work with the G955U1 FW?
my 2 cents
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Click to collapse
I went to Verizon store and used one of their Verizon SIMS from a display model of the S8+. Voice over LTE works, Data works and I was not able to test Wifi Calling at the store. I even ran a speed test and had about 27mpbs down and the associate ran speed test on his phone and he got about 20mpbs down connected to the same server using the Speedtest app. I ran the LTE discovery app and shows me connected to LTE Band 13.
Hope all of this helps.
Bringing S8 to sprint?
Did you anybody try to use a TMobile or other branded S8 on Sprint? The Sprint customer support is not able to add the IMEI to their database for whatever reason.
@Aephel
@T33H00
Silly question, but does doing all this void Warranty? or is there no such issue anymore?
For example flashing Verizon Firmware onto a Tmobile Unlocked.
I unlocked my t-mobile s8 plus and attempted to use a Verizon SIM. It does NOT work. Verizon states that the IMEI is not in there database and that they cannot activate it.
This has been discussed before but I'm still not 100% clear.
Can I buy an unlocked Galaxy s8 plus that comes from a different carrier (say Sprint) and flash the AT&T firmware to it, changing the carrier identity so that you get features like wifi calling and VoLTE?
Thanks!
rykr said:
This has been discussed before but I'm still not 100% clear.
Can I buy an unlocked Galaxy s8 plus that comes from a different carrier (say Sprint) and flash the AT&T firmware to it, changing the carrier identity so that you get features like wifi calling and VoLTE?
Thanks!
Click to expand...
Click to collapse
Yes you could get it working with wifi calling and voice over LTE no problem but you got to make sure that if you get a phone like from Sprint/Verizon / T-Mobile unlocked before trying to carrier switching
tlopez1973 said:
Yes you could get it working with wifi calling and voice over LTE no problem but you got to make sure that if you get a phone like from Sprint/Verizon / T-Mobile unlocked before trying to carrier switching
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Thanks for replying. So make sure I have this right.
If I purchase a Verizon/Tmo/sprint Galaxy s8 plus and put my AT&T sim in it and it activates on the network and allows me to make/take phone calls then I can assume that the device is unlocked. If it's carrier locked that should not work.
Yes that is correct but if you want to have all the AT&T features you must carrier switch following instructions here on XDA which will convert your Verizon/ Sprint S8 phone and to a completely AT&T phone
tlopez1973 said:
Yes that is correct but if you want to have all the AT&T features you must carrier switch following instructions here on XDA which will convert your Verizon/ Sprint S8 phone and to a completely AT&T phone
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Click to collapse
Riddle me this. I have a guy trying to trade me an S8+ att version for my OP5. He says it is unlocked. Can I flash unlocked firmware on it to get rid of any bloat and all the att stuff in the background that will be taking my data?