spot on, was wondering whether its only me or my operator, with full signal actually the caller gets my number as switched off :s , anyway reboot made things fine but i have keep a check.. maybe this bug will force me to go back to official if it happens again.. (model SE 32GB)iPhone X randomly loses the ability to make and receive calls and SMSes. Reboot fixes it but the problem occurs again after few days. Signal strength is full so it is difficult to actually spot when the phone is having the problem.