Question Vivo x70 pro+ signal problem

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Senior Member
Jul 10, 2022
I have 2 vivo pro+ phones and have changed from originOS to funtouchOS , all went well but there is a problem with one of them , the signal drops , sometimes i can have full signal but icant get any calls or sms , no way to call , sometimes the signal bar is out , restarting the phone but nothing happens, the other phone works with no problem , anyone that have or has the same problem or know how to fix this ?