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I purchased 4 new T-Mobile SIM card last December (the tourist/holiday package) and got 4 free Samsung Galaxy On5 . Now I'm back at my country I can't unlock the phones to use with other SIM card . I already tried using the unlock software but it doesn't work .
What to do ?
Welcome to support and thanks for posting andra.
If you want the phone unlocked, you'll need to meet the requirements on our Unlock your mobile wireless device page.