I just bot second hand iPhone 4s but is no working for all network what can i do?
Give us more information regarding your problem. Is this iPhone officially unlocked? What error message are you getting when you try to use it?
message written on iphone 4s is only compatible sim cards from a supported carrier may be used to activate, and i bought r sim7 card so I can use the net work 02 but could not as well. thank you
You bought a phone that is locked to a carrier. Return it and buy a phone from a legitimate source.
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