I purchased a Samsung s10 a few months before, and I was using it on T-Mobile.
now I came back to India and when I inserted the Indian SIM Phone says Invalid Sim.
when I searched on Google about this, I came to Know its a Network Lock.
I found an application named as Device Unlock, I opened and Tap on Unlock, Then it not Unlocks.
then I searched online and found a few websites offering an unlock service for this problem.
they asking money for that. but when I bought the phone, the executives said T-Mobile will unlock it if I requested.
So, My Query is how to contact T-Mobile for this unlocking.
Should I go for the Unlock service offered by third party websites?
Kindly do a reply and help me to fix this as soon as possible.
You need to meet the requirements in the link above and since you're out of the country I
suggest contacting them through messenger on Facebook or Twitter to ask for an uock code.
If you were a prepaid customer the account still needs to be active.
Manage your T-Mobile account