It happened a few times already that my Huawei (P20 and P30) loaded a software update at night and then got stuck at Pin entry, before loading alarms. I'm wonde

It happened a few times already that my Huawei (P20 and P30) loaded a software update at night and then got stuck at Pin entry, before loading alarms. I'm wondering if the sim cards in other countries don't have a pin.