Calls don't connect when people try to call me. SMS worked. For me also many times I have to turn on airplane mode, then turn off multiple times or some times reboot to have calls working. 4g data is also very unreliable. these were more reliable before the last update.
This does not happen as often as before, but not completely gone. I think when you switch towers it still happens some times. I will let you know if this happens again when I travel next time.