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co9499's profile

Contributor

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6 Messages

Monday, March 25th, 2024 9:20 PM

Can I Add an ATT Mexico Line to a Locked iPhone?

I am an ATT customer with an unlocked iPhone.  I have an Unlimited plan.   I travel often to Mexico so I added an ATT Mexico local line to my phone as it is dual SIM.  Everything works fine.  I have the US line and the local Mexico line on the same phone.  

I am considering purchasing a new iPhone through an ATT installment plan.  My question is this:   can I add an ATT Mexico line to an iPhone locked to ATT in the US or must the phone be unlocked if I want to add the ATT Mexico line?

Accepted Solution

Community Support

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232.2K Messages

2 months ago

Hi @co9499, we understand you wish to know  about using ATT prepaid sim from Mexico in your ATT device. Please note that, the device needs to be in unlocked status to be able to use the same.

 

Feel free to reach out to us for further assistance.

 

Thank you for visiting Community & Forums,

Billy, AT&T Community Specialist.

ACE - Expert

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35.5K Messages

2 months ago

A carrier-locked phone will only allow SIMs from that carrier to work in the phone.  Thus, if you have a SIM from a Mexican cell carrier that you wish to use, you could not put that, even as a second-SIM, in a phone locked to an American cell carrier such as AT&T.

Contributor

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6 Messages

2 months ago

I understand but I am specifically asking about adding an ATT Mexico line not a line from a random Mexico carrier.   ATT fully operates in Mexico with stores, accounts, etc just like the US.  It's obviously a separate entity from ATT in the US but nevertheless it is still ATT.   I know I could not add a "Telmex" line to a phone locked to ATT, but I cannot add an ATT Mexico line either?

Contributor

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6 Messages

2 months ago

@ATTHelp,

Great!   I use a prepaid ATT Mexico acc't.   Can I add that or must I have a full-on ATT Mexico plan?   

ACE - Expert

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35.5K Messages

2 months ago

@co9499 I'd wait for independent confirmation.  Yeah, I know ATThelp should be authoritative, but, well... their answer quality is less than stellar.

In contrast to the answer above, please see: 

https://forums.att.com/conversations/account-features/can-i-use-a-mexico-att-sim-card-in-a-locked-us-att-phone/61722fd7793b38530dcf0238

https://forums.att.com/conversations/apple/att-mexico-locked-iphone/5defd758bad5f2f606565d3b

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