Database Users

Converting Sprint S4 to ATT

I get my wife a used S4 today that was previously on the Sprint network. We are on ATT and i planned on rooting the phone any ways. What all do i need to change to get rid of the sprint phone number that is on the phone, and what do i need to flash to make it work with the att network?

Don't believe it's possible. ..Sprint is CDMA and dont use SIM cards ATT uses GSM and SIM cards
Sent from my SGH-I747 using xda premium
---------- Post added at 09:56 PM ---------- Previous post was at 09:55 PM ----------
Only other carrier that uses CDMA is VZW
Sent from my SGH-I747 using xda premium

it has a sim card slot on the phone. They said it was unlocked and would work with all carriers. When i put the sim card in, it says Invalid SIM card

Twiztidunreal said:
it has a sim card slot on the phone. They said it was unlocked and would work with all carriers. When i put the sim card in, it says Invalid SIM card
Click to expand...
Click to collapse
Because its for international SIM cards. Your Sprint S4 WILL NOT WORK on any US carrier other than Sprint.

MattMJB0188 said:
Because its for international SIM cards. Your Sprint S4 WILL NOT WORK on any US carrier other than Sprint.
Click to expand...
Click to collapse
I can confirm this. I work as a Sprint wireless consultant. A sim unlocked phone from Sprint is not compatible with any domestic carriers.
Sent from my SAMSUNG-SGH-I337 using xda premium

Its true.. Sprint is the only greedy company that goes out of their way to block gsm domestically within the USA.
Sent from my SGH-I337 using Tapatalk 2

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worthless sprint is sprint and sprint only...sorry, no ATT for you.

Febby said:
Its true.. Sprint is the only greedy company that goes out of their way to block gsm domestically within the USA.
Sent from my SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
I'm sorry to have to disagree with this but I own a blackberry 9630 world phone from sprint and the sim slot works both with at&t as well as tmo. I understand ad long as contract is fulfilled and any etf's are paid Sprint will unlock sim slot and it will work with any carrier, gsm and CDMA alike. Check Sprint forums and speak with cs agents... :good:

onebenadams said:
I'm sorry to have to disagree with this but I own a blackberry 9630 world phone from sprint and the sim slot works both with at&t as well as tmo. I understand ad long as contract is fulfilled and any etf's are paid Sprint will unlock sim slot and it will work with any carrier, gsm and CDMA alike. Check Sprint forums and speak with cs agents... :good:
Click to expand...
Click to collapse
Try using an Att/T-Mobile sim on an s4. It will be blocked even if the phone has been unlocked. Previous phones from sprint did not block USA native gsm but as of lately they do.
My good ol htc touch pro was a lucky one to work on USA gsm as of course your old black Berry.
You get it now? Its an accepted fact sprint has been going out of their way to block USA native gsm access on their latest phones. Perhaps some new ones aren't but the s4 is unless a work around is done but it doesn't work for everyone.
Sent from my SGH-I337 using Tapatalk 2

HTC One
This isn't entirely true. I unlocked my Sprint HTC One to run on aio wireless which is on the ATT network. I haven't unlocked my Galaxy S4 but I intend on giving it a shot.

Call sprint and ask for a subsidy unlock code.
You'll need to provide the IMEI
*#06# on the keypad. After they give you the code, try a gsm sim. Hope this helps.
Sent from my SAMSUNG-SGH-I337 using Tapatalk

Or buy an unlock code from Amazon or ebay if they wont give it to you ofcourse

CuhThooLoo said:
This isn't entirely true. I unlocked my Sprint HTC One to run on aio wireless which is on the ATT network. I haven't unlocked my Galaxy S4 but I intend on giving it a shot.
Click to expand...
Click to collapse
thinking of doing the same with my s4 on sprint and going to aio. Been with sprint over a decade and finally over it. In houston and lte sucks.

wow that sucks, because even Verizon who is the greediest of them all will let you use their phone on both AT&T and T-Mobile. I have the AT&T Galaxy S4 and I can use my phone on T Mobile as well.

sleekgreek said:
thinking of doing the same with my s4 on sprint and going to aio. Been with sprint over a decade and finally over it. In houston and lte sucks.
Click to expand...
Click to collapse
I tried and tried to unlock my Sprint S4 for domestic SIM but I have failed time and time again. I got it unlocked for International but Sprint has somehow managed to block the S4 from working on a Domestic carrier. I'll let you know if I have any luck.

CuhThooLoo said:
I tried and tried to unlock my Sprint S4 for domestic SIM but I have failed time and time again. I got it unlocked for International but Sprint has somehow managed to block the S4 from working on a Domestic carrier. I'll let you know if I have any luck.
Click to expand...
Click to collapse
I think I've read about people unlocking for use on metro pcs which is tmobile. Thanks for heads up though, probably gonna have to buy one when I switch.

I unlocked a Sprint s4 and I am able to make calls with a AT&T micro sim in but cannot get data and texts working. I had to downgrade the baseband to get into hidden menu, but I stopped there. In the hidden menu you have to make some changes but I was scared that if I got it to work on at&t I wouldnt be able to get it back working on Sprint. Everyone does say that Sprint doesnt allow anyone to use other domestic carriers.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

sprint lost
cyrusalmighty said:
I unlocked a Sprint s4 and I am able to make calls with a AT&T micro sim in but cannot get data and texts working. I had to downgrade the baseband to get into hidden menu, but I stopped there. In the hidden menu you have to make some changes but I was scared that if I got it to work on at&t I wouldnt be able to get it back working on Sprint. Everyone does say that Sprint doesnt allow anyone to use other domestic carriers.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
here is a video I made for on sprint 4g to att h+ back to sprint 4g with no problems no sound in the video tho and no need for root inless you want data then you need to edit apns no you should get on E or 3g maybe with this without apn.
tNoobYsYL8o <--- end of youtube link just made an acc so can't post the whole link

how you do it
eheilner said:
here is a video I made for on sprint 4g to att h+ back to sprint 4g with no problems no sound in the video tho and no need for root inless you want data then you need to edit apns no you should get on E or 3g maybe with this without apn.
tNoobYsYL8o <--- end of youtube link just made an acc so can't post the whole link
Click to expand...
Click to collapse
can you provide how you do it to unlock the s4 sprint use in att
thanks in advance

[Q] Verizon's Galaxy Note 3 technical and general disadvantage?

Hello,
I am considering buying this phone from Verizon. I have been looking at the phone spec, and found that its technical model is SM-N900V. Is it inferior to the international model N9005 in anyway?
Since I travel a lot, will the difference in the network band prevent me from using this phone in certain countries? Can this problem be solved by rooting and installing custom rom/software?
Thank you!

I don't know what the complete differences are. However I do know it's an unlocked phone and can be used with other Sims.
I have a ATT phone and switch the Sims out on a regular basis.
You shouldn't have any problems traveling with this phone.
Sent from my SM-N900V using Tapatalk

Bsmith0731 said:
I don't know what the complete differences are. However I do know it's an unlocked phone and can be used with other Sims.
I have a ATT phone and switch the Sims out on a regular basis.
You shouldn't have any problems traveling with this phone.
Sent from my SM-N900V using Tapatalk
Click to expand...
Click to collapse
So do you mean you are able to use this phone on ATT network without a problem?

garuda3 said:
So do you mean you are able to use this phone on ATT network without a problem?
Click to expand...
Click to collapse
No problem at all. Just change the apn settings after you insert the sim and you are good to go.
Sent from my SM-N900V using Tapatalk

Bsmith0731 said:
No problem at all. Just change the apn settings after you insert the sim and you are good to go.
Sent from my SM-N900V using Tapatalk
Click to expand...
Click to collapse
Really? SO since we are in a Verizon thread, I just want to make sure. If we bought the retail Verizon Note 3 and have a Verizon 4g SIM in it, we can remove that, put in a ATT SIM, change the APN settings, and it will work on ATT network? Calls and Data?

christianpeso said:
Really? SO since we are in a Verizon thread, I just want to make sure. If we bought the retail Verizon Note 3 and have a Verizon 4g SIM in it, we can remove that, put in a ATT SIM, change the APN settings, and it will work on ATT network? Calls and Data?
Click to expand...
Click to collapse
Correct. hspa but not LTE I haven't seen LTE yet but then again I haven't tried an ATT LTE apn either. I believe LTE is on a different band anyway.
But it absolutely gives people in my contacts the impression that I'm calling or texting from my ATT phone. It's sweet.
Sent from my SM-N900V using Tapatalk

Thank you for your reply. This definitely make me feel a bit better if I need to change carrier in the future.
In the mean time, can anyone here with technical knowledge tell me if there is any disadvantage in choosing Verizon's N900V over N9005? Especially for using them outside the US?
Thanks!

Can you activate a verizon s5 on tmobile?

the title says it, i kind of want to do this, maybe not for that long, most likely it would be temporary.

jrpjordan24 said:
the title says it, i kind of want to do this, maybe not for that long, most likely it would be temporary.
Click to expand...
Click to collapse
No. Google it and you will find that Verizon and tmobile networks are different. Verizon is CDMA and tmobile is GSM. Or something like that.
Sent from my SM-G900V using XDA Free mobile app

Mr. bird said:
No. Google it and you will find that Verizon and tmobile networks are different. Verizon is CDMA and tmobile is GSM. Or something like that.
Sent from my SM-G900V using XDA Free mobile app
Click to expand...
Click to collapse
I use Verizon phone on T-Mobile network. Verizon S5 has sim slot for sim cards. All Verizon 4LTE phones, GSM unlock.

B767 said:
I use Verizon phone on T-Mobile network. Verizon S5 has sim slot for sim cards. All Verizon 4LTE phones, GSM unlock.
Click to expand...
Click to collapse
This is true.
Sent from my SM-G900V using Tapatalk

U can use it but lte will not work tmobile is not compatible with Verizon lte
Sent from my SM-G900V using XDA Free mobile app

deron37129 said:
U can use it but lte will not work tmobile is not compatible with Verizon lte
Sent from my SM-G900V using XDA Free mobile app
Click to expand...
Click to collapse
It not true. I confirm LTE works fine with out any problem.

If you are able to use other carrier phones and just pop a Sim card in and your good to go, then in the future can I buy a variant of the phone I want with an unlocked bootloader and be rooted with no issues?
Sent from my SM-G900V using XDA-FORUM, powered by appyet.com

Odin80 said:
If you are able to use other carrier phones and just pop a Sim card in and your good to go, then in the future can I buy a variant of the phone I want with an unlocked bootloader and be rooted with no issues?
Sent from my SM-G900V using XDA-FORUM, powered by appyet.com
Click to expand...
Click to collapse
Nope, i'm actually surprised that Verizon didn't lock the phone if what the above poster said is true. The bootloader isn't what you need unlocked to move from carrier to carrier. Phones with sim cards are generally GSM and phones without sim cards are generally CDMA. GSM phones are normally locked to the specific carrier that you bought it from. CDMA phones are not usually taken on any other networks unless you are moving to a network like cricket which takes what it can get

vinc3stylez said:
Nope, i'm actually surprised that Verizon didn't lock the phone if what the above poster said is true.
Click to expand...
Click to collapse
As he said, Verizon 4G phones are all sim unlocked. Phones like this and the Note 2, which I just came from, have the CDMA and GSM bands. It is just as simple as putting in the SIM, change the APN, and be working. That said, the Note 2 could not get a 4G GSM signal only HSPA+ because of the bands it supported. I haven't checked the S5 yet, but I do believe I have seen that it does support some of the 4G GSM bands.
You are right about the CDMA part which is why it wouldn't be wise to buy, say a Sprint S5, and then come to Verizon because it does not support any CDMA bands.

so you guys can confirm that it is sim unlocked?

They always are. All Verizon Wireless 4G phones are SIM unlocked.

jcollier said:
As he said, Verizon 4G phones are all sim unlocked. Phones like this and the Note 2, which I just came from, have the CDMA and GSM bands. It is just as simple as putting in the SIM, change the APN, and be working. That said, the Note 2 could not get a 4G GSM signal only HSPA+ because of the bands it supported. I haven't checked the S5 yet, but I do believe I have seen that it does support some of the 4G GSM bands.
You are right about the CDMA part which is why it wouldn't be wise to buy, say a Sprint S5, and then come to Verizon because it does not support any CDMA bands.
Click to expand...
Click to collapse
Bare with me if this seems like an absolutely stupid question.
When I travel I have a GSM HTC One S that I pop in a pre-paid SIM to use (say, 3 in Ireland). I believe this was a T-Mobile phone previously that I carrier unlocked. If I have a Verizon CDMA S5, I could pop in the 3 SIM and be able to use it (maybe not 4G depending on the bands) provided I updated the APN information?

hEaTLoE said:
Bare with me if this seems like an absolutely stupid question.
When I travel I have a GSM HTC One S that I pop in a pre-paid SIM to use (say, 3 in Ireland). I believe this was a T-Mobile phone previously that I carrier unlocked. If I have a Verizon CDMA S5, I could pop in the 3 SIM and be able to use it (maybe not 4G depending on the bands) provided I updated the APN information?
Click to expand...
Click to collapse
Correct. I used my Note 2 in multiple European countries, lastly in Rome where it was stolen. Take your Verizon sim out at the airport, put the new one in, change APN, and voila.
(carriers I have tested with - Orange, Vodafone(multiple places), 3, Rogers in Canada)
Your S5 on Verizon isn't solely CDMA. If you look up any website with the bands it supports, you will see the GSM bands.

jcollier said:
Correct. I used my Note 2 in multiple European countries, lastly in Rome where it was stolen. Take your Verizon sim out at the airport, put the new one in, change APN, and voila.
(carriers I have tested with - Orange, Vodafone(multiple places), 3, Rogers in Canada)
Your S5 on Verizon isn't solely CDMA. If you look up any website with the bands it supports, you will see the GSM bands.
Click to expand...
Click to collapse
That's fantastic. Thank you!

hEaTLoE said:
That's fantastic. Thank you!
Click to expand...
Click to collapse
More than welcome. And here is the link so you can check the bands when looking at foreign carriers.
http://www.phonescoop.com/phones/phone.php?p=4408
And even without 4G, it is still plenty fast enough to use the internet, google maps, and stream music.

What if you canceled your service and went to tmobile. Would it still work?
Sent from my SM-G900V using Tapatalk

jcollier said:
More than welcome. And here is the link so you can check the bands when looking at foreign carriers.
http://www.phonescoop.com/phones/phone.php?p=4408
And even without 4G, it is still plenty fast enough to use the internet, google maps, and stream music.
Click to expand...
Click to collapse
Looks like the One S and S5 share the same GSM bands... I'll definitely have to try it out. I know my 3 SIM works here in the US too on the phone. Thanks again, really helpful.

ironfisted said:
What if you canceled your service and went to tmobile. Would it still work?
Sent from my SM-G900V using Tapatalk
Click to expand...
Click to collapse
Yes, or Straight Talk, or whomever.

jcollier said:
Yes, or Straight Talk, or whomever.
Click to expand...
Click to collapse
But Straight Talk don't have LTE.

B767 said:
But Straight Talk don't have LTE.
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Click to collapse
That wasn't the question. The question, as posed, was would it work? It absolutely will work with speeds up to HSPA+.

will tmobile s7 work on verizon?

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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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!
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse

A T-Mobile S8 on Verizon

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
Click to expand...
Click to collapse
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!
Click to expand...
Click to collapse
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!
Click to expand...
Click to collapse
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!
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
Wifi calling too? Digits?
Sent from my SM-G955U using Tapatalk

blaine07 said:
Wifi calling too? Digits?
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.
Click to expand...
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
Click to expand...
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.