dont have valid sim
my iPhone 4s doesn't work with my network career. what can i do?
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Fifth generation of iPhone. Repair of this device is straightforward, and requires screwdrivers, prying tools, and patience. GSM/CDMA / 16, 32, or 64 GB / Black or White.
what type of carrier is if its Verizon or sprint it will not work with gsm sims as att and will definitely not work with t mobile. you need to unlock if you are going to use a gsm. try going to carrier's website and unlocking from there or a third party unlocker.
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