Phone is originally at&t but it is also unlocked for all GSM services like at&t, T-mobile MVNO, overseas...

If you have question do not hesitate to contact me before purchasing...

If you have an active at&t sim card then just insert it and use the phone...

sim card size is Micro.

30 days warranty.

Comes with Battery, Battery cover and new high quality aftermarket charger only.

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