I just updated my zenohone 9 today and could not recieve calla. All the people calling say my ohone is off and then i recieve a sma saying that someone tried to contact me.
Can you please check if you disabled the 3G service? (Settings>Internet>Sim Card Settings>Preffered Network)
This doesn't work.
This happens to me too even before the last update. I just assumed it was a problem with my carrier.
I'm facing this problem too. Any solution yet?