Network working only when calling someoane , not able to recive calls

Hello , i have a quite big problem …

1 week ago , while i was watching some video , the iphone has completly died and didn’t want to open anymore , beside any process i tried .

i bought in a repair shop , and the guy has somehow turned my iphone ON , but i didn’t have time to stay longer and had to go ..

now my display works perfectly and everything else , beside network from sim .

when i try to call someoane , isn’t go from first time , i need to make like 3-4 tries . after this ones , the phone gets signal and is able to call and even gets 4G or 3G signal with internet acces.

but in the rest of time , i have no signal at all , noboday can call me , my iphone don’t even see the SIM in my phone , it’s completly dead .

it’s working only when I call , and after 3-4 times .

any suggestion on what is happening or what should i do ?

i can’t go to an apple store becouse my back phone is craked and i fear they gonna charge me A LOT .

PLEASE HELP

Update (11/19/2018)

oh and btw , i tried - restart , force restart , switching sims , network reset

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4 Comments:

have you tried a backup and restore then update?

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No cus i’m fearing that I can’t activate my iphone anymore after ….

should I do it ?

I can activate iphone over WiFi too just in case ?

Thanks

by

i have the same issue with activating over mine atm.

by

Can’t risk to remain without phone .

I m in another country and is not gonna be good at all if I remain without phone lol

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