I plan to send my current IPhone 6 to apple to be repaired (new battery) but it will be gone for a week or more. I'd like to use an old phone of my moms (iPhone 5) while its gone, can I just take the sim card out of my phone and put it in the loaner? Her phone is most likely locked to MTS (I recently switched to Telus), can it still be unlocked even though it doesn't have an account/sim card associated with it?
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