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The Samsung Galaxy S24
Anggrek1311's profile

New Member

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3 Messages

Monday, December 19th, 2022 4:37 AM

Unlocked AT&T S10+ but can’t use Overseas SIM Card

Greetings..

My AT&T Galaxy S10+ is unlocked. I received the code to unlock it.

Then the unlocked AT&T S10+ is able to read my Indonesian SIM card which works fine in my other device (Samsung A03). Meaning the network compatibility and Sim Card are working fine. 

My problem is that the Indonesian SIM Card that I inserteds to AT&T Galaxy S10+ is not showing ‘R’ for Roaming. I checked Setting, I turned on Roaming Internationally but it doesn’t show Roaming icon in the right up corner.

How to solve this? Thank you in advance. (Angie Nugroho)

ACE - Sage

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115.8K Messages

1 year ago

You received an unlock code from AT&T, have you used it to unlock the phone?

Did the phone pop up a box for the code?  And once entered did it say 'unlock successful'? 

If the phone is still Network locked it should say sim not supported. There are two things to try the first thing is turn the phone off and turn it back on again and see if it connects. The other thing is to go into settings on the phone and reset the network settings. 

I've never had a phone show R for roaming. 

 And when you insert a different carriers SIM card, in that country, it's not roaming it's using local service.  It should show the new network in the upper right.

New Member

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3 Messages

1 year ago

Hi, thank you for your response! 

I believe I managed the unlocking proceeds successfully. Even though there is no confirmation pop up window but there is no Locked Phone pop up notification window anymore. 

I chose the network manually to at&t and I received a text message that it says Welcome, you are roaming on AT&T. Due to network technology compatibility, traditional voice calls will not work. Please use data, SMS, app-based calling. 

Could you please guide me whether I shall keep this network to AT&T ? or better to reset the network? (and how)

I am wondering if I use AT&T network in the US, so when I travel to Indonesia, I can operate my Indonesia SIM Card in my AT&T S10+ with a local provider or not ? 

ACE - Sage

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115.8K Messages

1 year ago

Very welcome! 

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