My phone is locked

ba43 Said:

"My phone is locked: I would like to open it to every sim"

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Getting Around a Carrier Locked Cell:

Seems you need to remove a Carrier lock. So, take this to your Carrier, and have them unlock this. Go here: How to Unlock your iPhone for Use with a Different Carrier - Apple Support

ba43 Said:

"My phone is locked to one sim I would like to change to all the sims"

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Contact you Carrier. There is a carrier lock on this.