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iPhone unlock
35 593949 922503 5 My mobile phone in the white list now people in China can not use the network, trouble how to unlock where to consult customer service can not find customer service options.
To qualify for a SIM unlock from T-Mobile. You must be a T-Mobile USA customer, the device must be a T-Mobile USA device, and meet all of the T-Mobile SIM Unlock Policy requirements. If you are not the original owner of the device, that complicates things even more.
https://www.t-mobile.com/responsibility/consumer-info/policies/sim-unlock-policy
If it's a Tmobile phone and you still have the sim card you can try the international number that's free.
