I bought an Iphone X from a person, a week later I got an error that the SIM card is not valid, I use the services of T-Mobile.pl, can I count on unlocking my phone?
You need to be a customer of Tmobile USA and meet the requirements in the link below.
https://www.t-mobile.com/responsibility/consumer-info/policies/sim-unlock-policy
Can I know if I can expect to be unlocked at all?
IMEI 353045090300177
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