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Help WiFi

On my Galaxy TAB 2 10.1 mod P5100

A ) Would like to know if it is normal that WiFi does not work unless the Sim Card is inserted
B) Settings would hang most of the time if Sim Card is not inserted ; is this also normal ?
C) can anyone tell me if copper circuit module ( i do not know hot it is called ) of Sim Cards should be of specific size and specification when used on this Tablet ?

Thanks in advance

Luigi
 
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