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