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Posted Jul 2, 2014
6:22:01 PM
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Unlock Sprint iPhone 4S to AT&T

I apologize if there are countless posts about this as to I could not find the info I was looking for.

 

I have a Sprint iPhone 4S that I want to use on AT&T. Apparently it is possible and went ahead and requested a COMPLETE unlock code from sprint (not an international unlock) after AT&T told me that I would have to request an unlock code from Sprint for ME to unlock it.

 

After some run-around, they gave it to me and told me they're not responsible for anything happening and that not all the features of the phone will be available.

 

Has anyone unlocked a Sprint iPhone 4S to use on AT&T?

If so, what features are apparently unavailable if I do unlock my device?

How do I even use the code they gave me to unlock? They never gave me any info on that or anything. (I also never asked Smiley LOL)

 

Thanks for any help!

I apologize if there are countless posts about this as to I could not find the info I was looking for.

 

I have a Sprint iPhone 4S that I want to use on AT&T. Apparently it is possible and went ahead and requested a COMPLETE unlock code from sprint (not an international unlock) after AT&T told me that I would have to request an unlock code from Sprint for ME to unlock it.

 

After some run-around, they gave it to me and told me they're not responsible for anything happening and that not all the features of the phone will be available.

 

Has anyone unlocked a Sprint iPhone 4S to use on AT&T?

If so, what features are apparently unavailable if I do unlock my device?

How do I even use the code they gave me to unlock? They never gave me any info on that or anything. (I also never asked Smiley LOL)

 

Thanks for any help!

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Unlock Sprint iPhone 4S to AT&T

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Jul 2, 2014 6:35:49 PM
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Edited by ShaunnieDarko on Jul 2, 2014 at 8:57:00 PM
An unlocked sprint iPhone 4s won't be able to run on att's network. Two different types of networks.
An unlocked sprint iPhone 4s won't be able to run on att's network. Two different types of networks.
*I am an AT&T employee and the postings on this site are my own and don’t necessarily represent AT&T’s position, strategies or opinions.

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Jul 7, 2014 12:10:46 AM
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I don't believe that is accurate. The Sprint 4s, I believe, has both CDMA and GSM capability. It is the GSM side that can be unlocked and should work on ATT's network. I know other users have successfully used Verizon's 4s on ATT and technically, I think the Verizon and Sprint models are the same.
I don't believe that is accurate. The Sprint 4s, I believe, has both CDMA and GSM capability. It is the GSM side that can be unlocked and should work on ATT's network. I know other users have successfully used Verizon's 4s on ATT and technically, I think the Verizon and Sprint models are the same.

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Jul 7, 2014 1:18:46 AM
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Edited by chosenlegacy on Jul 7, 2014 at 1:21:24 AM

"Sprint may be able to unlock the CDMA/voice functionality of the device but unable to unlock the GSM/UMTS/LTE portion of the device). Even if unlocked, Sprint devices will not necessarily work on another carrier’s network."

 

Taken from: http://www.sprint.com/legal/unlocking_policy.html

 

It seems like their SIM unlocking only applies to travellers planning to use international SIMs. This leaves out local SIM card use on their service. Correct me if I'm wrong.

"Sprint may be able to unlock the CDMA/voice functionality of the device but unable to unlock the GSM/UMTS/LTE portion of the device). Even if unlocked, Sprint devices will not necessarily work on another carrier’s network."

 

Taken from: http://www.sprint.com/legal/unlocking_policy.html

 

It seems like their SIM unlocking only applies to travellers planning to use international SIMs. This leaves out local SIM card use on their service. Correct me if I'm wrong.

Re: Unlock Sprint iPhone 4S to AT&T

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Jul 7, 2014 6:56:04 AM
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I would assume they are both same. Theres really only two options in iPhones. The iPhone 4S does have both GSM and CDMA since it's considered a "world phone".

 

I've read around about people trying to unlock a 4S for use on ATT from Sprint and it seems to me that Sprint is the problem from what I've read.

 

According to my mother, I'm not sure how accurate it is, but it wasn't until March that Sprint had to legally provide you with the "MSL"(unlocking code) if you asked for it. It was given to me, but it is like what CHOSENLEGACY said; Sprint is not straight foreward at all with their information unlocking of devices for use on other networks outside of international.

 

I still do believe it would be possible to unlock for use on ATT if its true what SANDBLASTER said about Verizon iPhone 4S' being unocked for use on ATT's network. It can't be legal that Sprint is the only company that doesn't legally "give"(im sure theres a better word) after completing longer than what your contract is for and never late on payments, etc; a good standing customer.

 

Thanks for the input. But I would need a more definitive answer.

I would assume they are both same. Theres really only two options in iPhones. The iPhone 4S does have both GSM and CDMA since it's considered a "world phone".

 

I've read around about people trying to unlock a 4S for use on ATT from Sprint and it seems to me that Sprint is the problem from what I've read.

 

According to my mother, I'm not sure how accurate it is, but it wasn't until March that Sprint had to legally provide you with the "MSL"(unlocking code) if you asked for it. It was given to me, but it is like what CHOSENLEGACY said; Sprint is not straight foreward at all with their information unlocking of devices for use on other networks outside of international.

 

I still do believe it would be possible to unlock for use on ATT if its true what SANDBLASTER said about Verizon iPhone 4S' being unocked for use on ATT's network. It can't be legal that Sprint is the only company that doesn't legally "give"(im sure theres a better word) after completing longer than what your contract is for and never late on payments, etc; a good standing customer.

 

Thanks for the input. But I would need a more definitive answer.

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Jul 7, 2014 10:52:54 AM
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Try calling Sprint and specifically ask them if you can use your unlocked phone on the AT&T network. I looked all over the internet for a specific answer to this and it all goes back to Sprint not allowing it unless you plan on traveling to another country. While the iPhone 4S is compatible with both CDMA and GSM, for some reason Sprint won't "allow" people to change to a domestic network.

Try calling Sprint and specifically ask them if you can use your unlocked phone on the AT&T network. I looked all over the internet for a specific answer to this and it all goes back to Sprint not allowing it unless you plan on traveling to another country. While the iPhone 4S is compatible with both CDMA and GSM, for some reason Sprint won't "allow" people to change to a domestic network.

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Jul 7, 2014 4:03:44 PM
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I contacted Sprint 3 times and spoke with 3 different representatives and got 3 different answers.

 

1. I can't use a the iPhone on a GSM network because its a CDMA phone. (unless international of course)

2. The iPhone doesn't have the unlocking feature in general (even for use on another CDMA network)

3. The iPhone can be unlocked but only for CDMA networks. And thats if the phone follows the networks policy and can accept the network's towers. (he "couldn't" answer if my Sprint iPhone 4S could work on Verizon's network)

 

So it looks like I'm getting no where with unlocking my device for ATT. My next plan is to see if I can contact Verizon to see if I can unlock a Verizon iPhone 4S to use on ATT(or any carrier for that matter) just out of curiosity.

 

 

I contacted Sprint 3 times and spoke with 3 different representatives and got 3 different answers.

 

1. I can't use a the iPhone on a GSM network because its a CDMA phone. (unless international of course)

2. The iPhone doesn't have the unlocking feature in general (even for use on another CDMA network)

3. The iPhone can be unlocked but only for CDMA networks. And thats if the phone follows the networks policy and can accept the network's towers. (he "couldn't" answer if my Sprint iPhone 4S could work on Verizon's network)

 

So it looks like I'm getting no where with unlocking my device for ATT. My next plan is to see if I can contact Verizon to see if I can unlock a Verizon iPhone 4S to use on ATT(or any carrier for that matter) just out of curiosity.

 

 

Re: Unlock Sprint iPhone 4S to AT&T

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Jul 7, 2014 6:04:27 PM
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Hi @iZarza 

 

The Sprint iPhone 4S (along with the Verizon iPhone 4S) does have a GSM side to the device that is used for International Roaming. 

 

The GSM side of the device is locked by the service provider to block it from using domestic GSM networks (such as AT&T or T-Mobile) at the firmware level and can't be unlocked. Almost all of Sprint's and Verizon phones are locked in this manner to prevent you from using them on another network. 

 

In my experience I have not seen anyone be sucessful with either Verizon or Sprint get the GSM part of their device unlocked and working properly on AT&T. It couldn't hurt to contact Verizon and see if they have ability to unlock an iPhone 4S and the GSM side of the device. 


Keep in mind that the Verizon iPhone 5, 5C and 5S GSM raidos are unlocked from the factory and will work without any additional unlocking steps. The Sprint 5, 5C and 5S are all locked and need to be unlocked. 

 

Hope this helps!

 

 

Hi @iZarza 

 

The Sprint iPhone 4S (along with the Verizon iPhone 4S) does have a GSM side to the device that is used for International Roaming. 

 

The GSM side of the device is locked by the service provider to block it from using domestic GSM networks (such as AT&T or T-Mobile) at the firmware level and can't be unlocked. Almost all of Sprint's and Verizon phones are locked in this manner to prevent you from using them on another network. 

 

In my experience I have not seen anyone be sucessful with either Verizon or Sprint get the GSM part of their device unlocked and working properly on AT&T. It couldn't hurt to contact Verizon and see if they have ability to unlock an iPhone 4S and the GSM side of the device. 


Keep in mind that the Verizon iPhone 5, 5C and 5S GSM raidos are unlocked from the factory and will work without any additional unlocking steps. The Sprint 5, 5C and 5S are all locked and need to be unlocked. 

 

Hope this helps!

 

 

*I am an AT&T employee and the postings on this site are my own and don’t necessarily represent AT&T’s position, strategies or opinions.

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Jul 8, 2014 2:36:24 AM
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Edited by SoonerAl on Jul 8, 2014 at 2:37:13 AM

iZarza wrote:

 

So it looks like I'm getting no where with unlocking my device for ATT. My next plan is to see if I can contact Verizon to see if I can unlock a Verizon iPhone 4S to use on ATT(or any carrier for that matter) just out of curiosity.

 

 



Instead of going to Verizon for a phone why not simply purchase an unlocked iPhone from Apple directly or go to your local AT&T store or reseller and buy an AT&T iPhone?

"When all else fails, read the instructions..."

iZarza wrote:

 

So it looks like I'm getting no where with unlocking my device for ATT. My next plan is to see if I can contact Verizon to see if I can unlock a Verizon iPhone 4S to use on ATT(or any carrier for that matter) just out of curiosity.

 

 



Instead of going to Verizon for a phone why not simply purchase an unlocked iPhone from Apple directly or go to your local AT&T store or reseller and buy an AT&T iPhone?

"When all else fails, read the instructions..."
"When all else fails, read the instructions..."
*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

Re: Unlock Sprint iPhone 4S to AT&T

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Nov 10, 2014 8:28:36 AM
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Sprint's official position on unlocking phones:  "Please note that unlocking the SIM slot does not allow for use with domestic (U.S.) SIMs."

http://www.sprint.com/legal/unlocking_policy.html

Sprint's official position on unlocking phones:  "Please note that unlocking the SIM slot does not allow for use with domestic (U.S.) SIMs."

http://www.sprint.com/legal/unlocking_policy.html

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Feb 26, 2015 1:08:47 PM
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Has anyone tried this since February 19th that Sprint has been forced to allow domestic unlocks?

 

The iPhone 4S has all the right hardware to support GSM and has a SIM card slot.

Has anyone tried this since February 19th that Sprint has been forced to allow domestic unlocks?

 

The iPhone 4S has all the right hardware to support GSM and has a SIM card slot.

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Mar 2, 2015 4:00:34 AM
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I'm also interesed in this question.  We are on Sprint wanting to switch to ATT.  My wife doesn't want to give up her 4s though.

I'm also interesed in this question.  We are on Sprint wanting to switch to ATT.  My wife doesn't want to give up her 4s though.

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Mar 2, 2015 5:41:01 AM
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Please Read Sprints unlocking page...
http://www.sprint.com/legal/unlocking_policy.html

While they can unlock your 4S, it is not capable of operating on AT&T, or another domestic GSM network. The same is true for a Verizon 4S, which Verizon will willingly unlock. The 4S was not configured by Apple to include domestic GSM radios.
We are customers too. Our answers are based on experience, knowledge and reading the terms of service and are honest, but not always appreciated. Please mark the correct answer. Please do not post personal information
@BartLabrador
@cjust1

Please Read Sprints unlocking page...
http://www.sprint.com/legal/unlocking_policy.html

While they can unlock your 4S, it is not capable of operating on AT&T, or another domestic GSM network. The same is true for a Verizon 4S, which Verizon will willingly unlock. The 4S was not configured by Apple to include domestic GSM radios.
We are customers too. Our answers are based on experience, knowledge and reading the terms of service and are honest, but not always appreciated. Please mark the correct answer. Please do not post personal information
We are customers too. Our answers are based on experience, knowledge and reading the terms of service and are honest, but not always appreciated. Please mark the correct answer. Please do not post personal information.
*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

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Jul 28, 2015 5:43:01 AM
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the sprint iphone 4s and 5 are exactly the same when it comes to hardware and the verizon phones (4s/5). sprint is trying to pacify people with their msl code which is useless. the only thing locking the sprint phones is a software lock. i have contacted the the consumer protection agency here in iowa and let them know that sprint is not trying to unlock their 4s/5 in good faith. you could also contact hakima@sprint.com. she said that if it is a software lock and the phones have the same hardware they can be dsu (digital sim unlock)

the sprint iphone 4s and 5 are exactly the same when it comes to hardware and the verizon phones (4s/5). sprint is trying to pacify people with their msl code which is useless. the only thing locking the sprint phones is a software lock. i have contacted the the consumer protection agency here in iowa and let them know that sprint is not trying to unlock their 4s/5 in good faith. you could also contact hakima@sprint.com. she said that if it is a software lock and the phones have the same hardware they can be dsu (digital sim unlock)

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Aug 12, 2015 10:58:16 AM
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They are not the same. The firmware and software is totally different.

They are not the same. The firmware and software is totally different.

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Oct 8, 2015 5:30:20 PM
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Edited by Phil-101 on Oct 8, 2015 at 8:00:14 PM

Just spent 4 hours with Sprint.
They told me to go to *** probably to get rid of me!
Costs $75, but if it won't work on GSM... Pretty bad insult to injury if I paid and it didn't work. Sprint should make an official statement to their own CS that their 4s was made to NOT work with domestic GSM!!!!

 

[Edited to comply with Guidelines - removed link to unlocking site]

Just spent 4 hours with Sprint.
They told me to go to *** probably to get rid of me!
Costs $75, but if it won't work on GSM... Pretty bad insult to injury if I paid and it didn't work. Sprint should make an official statement to their own CS that their 4s was made to NOT work with domestic GSM!!!!

 

[Edited to comply with Guidelines - removed link to unlocking site]

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Oct 10, 2015 9:22:47 PM
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Now is this just with sprint, sprint's iphone or the iphone 4s its self all together? I have been able to get phones unlocked from other providers

Now is this just with sprint, sprint's iphone or the iphone 4s its self all together? I have been able to get phones unlocked from other providers

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Jun 21, 2016 10:55:03 AM
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Listen the Sprint Iphone 4s can infact work on At&t, and this is how I know

.

I bought a Iphone 4s for At&t on ebay.

After about 6 months something went haywire, possiblly because I jailbroke it then did something that made it go strange.

 

After I restored it with a non-jailbroken firmware 9.2.1 it says it is now a sprint phone.

 

What I found out is that in the original firmware for the 4s there was a method after jailbreaking to allow the sprint 4s unto the GSM networks. 

 

The problem is there is not a method to jailbreak 9.2.1 yet. Thus i cannot use that method to reunlock my device. 

Listen the Sprint Iphone 4s can infact work on At&t, and this is how I know

.

I bought a Iphone 4s for At&t on ebay.

After about 6 months something went haywire, possiblly because I jailbroke it then did something that made it go strange.

 

After I restored it with a non-jailbroken firmware 9.2.1 it says it is now a sprint phone.

 

What I found out is that in the original firmware for the 4s there was a method after jailbreaking to allow the sprint 4s unto the GSM networks. 

 

The problem is there is not a method to jailbreak 9.2.1 yet. Thus i cannot use that method to reunlock my device. 

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Jul 18, 2016 4:40:20 PM
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I have a 4s Sprint that was unlocked and used on AT&T for about 9 months. After restoring phone, it is now locked back to sprint. They are of no help in unlocking because I am not a customer. But if you can get a Sprint 4s unlocked, IT WILL WORK PERFECTLY ON AT&T DOMESTIC !!!

I have a 4s Sprint that was unlocked and used on AT&T for about 9 months. After restoring phone, it is now locked back to sprint. They are of no help in unlocking because I am not a customer. But if you can get a Sprint 4s unlocked, IT WILL WORK PERFECTLY ON AT&T DOMESTIC !!!

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