Why won't my unlocked iPhone get signal on a different carrier?

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Why won't my unlocked iPhone get signal on a different carrier?

AT&T Recently unlocked my iPhone and now I have my sim card from a different carrier in the phone but it wont pick up any signal. I know I get signal in my area and my current location but the iPhone won't pick it up. It just stays on "Searching..."  Any help would be great. Thanks.

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Message 1 of 10
Scholar

Re: Why won't my unlocked iPhone get signal on a different carrier?

Is the carriers signal you're trying to pick up compatible with your iPhone?
Message 2 of 10

Re: Why won't my unlocked iPhone get signal on a different carrier?

Not every phone will work with every carrier.  Talk to your new carrier to see if your phone is compatible with their technology.

Message 3 of 10
Master

Re: Why won't my unlocked iPhone get signal on a different carrier?

Here is Apple's information page on the LTE bands supported by their different models: 

 

https://www.apple.com/iphone/LTE/

 

Make sure the carrier you are trying to connect to is supported by the iPhone you have! 

_____________________

For service or support questions including existing order status, call:
Customer Support: 1-800-331-0500

Information on iPhone unlocking can be found here by copying this link into your browser:
https://www.att.com/deviceunlock/client/en_US/
Message 4 of 10
Tutor

Re: Why won't my unlocked iPhone get signal on a different carrier?

Unlocked by at&t but still says invalid sim! What is the role here to at&t?
Message 5 of 10
ACE - Master

Re: Why won't my unlocked iPhone get signal on a different carrier?


suhail.vp wrote:
Unlocked by at&t but still says invalid sim! What is the role here to at&t?

What exact model of iPhone is it?  If it is an iPhone 5/5c/5s, then it requires a specific type of nano SIM and will not work with an incorrect type.

 

You also mention something about an unlock.  Did you see the "you phone has been unlocked" message when you restored your iPhone in iTunes?  If not, it's possible that the request from AT&T to Apple has "hung" somewhere in the process.  This happens from time to time (more often that many would think acceptable but that's a different story).  If that has happened, you can try calling AT&T customer service to see if htey can help you tract this down and get it resolved.


Jerry B.
"GeekBoy"

--

For additional help, please send a PM to ATTCustomerCare.
*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.
Message 6 of 10
Tutor

Re: Why won't my unlocked iPhone get signal on a different carrier?

It is iPhone4.recieved reply mail that is "in process".any one say how much days for really to unlock it? I reached 8business days.still says invalid sim& sim from a different carrier!
Message 7 of 10
Master

Re: Why won't my unlocked iPhone get signal on a different carrier?


suhail.vp wrote:
It is iPhone4.recieved reply mail that is "in process".any one say how much days for really to unlock it? I reached 8business days.still says invalid sim& sim from a different carrier!

Once you get an email telling you that your iPhone is unlocked, you MUST backup your iPhone via iTunes and then restore it!  It is during the activation process that your iPHone is unlocked.  Just putting in a SIM does not do anything.  

 

Have you ever been or are you currently an ATT customer?  If not, your request has probably been denied?  If you are eligible for the unlock, it could take a few days for ATT to process then time for Apple to update their activation servers.

_____________________

For service or support questions including existing order status, call:
Customer Support: 1-800-331-0500

Information on iPhone unlocking can be found here by copying this link into your browser:
https://www.att.com/deviceunlock/client/en_US/
Message 8 of 10
Tutor

Re: Why won't my unlocked iPhone get signal on a different carrier?

Its email reply as processing.
can i connect it with wifi to unlock!
Message 9 of 10
Expert

Re: Why won't my unlocked iPhone get signal on a different carrier?


suhail.vp wrote:
Its email reply as processing.
can i connect it with wifi to unlock!

If it states processing the unlock has not been completed, then you need to follow theses instructions

 

http://support.apple.com/kb/HT5014

Message 10 of 10
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