if you're worried what will happen, one of two things will

1, it'll work, and will setup with your sim card, prompting you to want to copy numbers off the sim. A sim only holds a 100 numbers, so if you have more than that, they'll be stored on the phone memory of your other phone

2, If the phone is securely configured to one sim, it will just say on the screen, "insert correct sim". On putting her sim back in, it will go back to normal

If it does say the above, it will cost you about 10 or 20 to get it unlocked from a shop in town

Posted By: pants, Sep 5, 19:39:53