Cant call or text/sim card not reconized

[Dsih01]

I got an htc one m7 from a friend who accidentally removed the os so i got insertcoin installed on it and it works fine (other then a bootloop that happens every time i turn it off and back on without wiping the dalvik cache) but i cant call or text, it may be carrier locked but i have no way of finding out

edit:it is tampered and unlocked

 

[Giorgi Ghvinadze]

What carrier is it locked to?

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