iphone 6s cant use data or send massages it says perfoming error and unknown error

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asked Apr 7, 2017 by william
my iphone 6s i just moved the sim from iphone 5 to 6s but for three weeks it was working after it lost connection and cant activate the data or make calls and send massages i tried to use 3 different sim cards but nothing but when i take the sim to iphone 5 it works


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