Factory reset your your Huawei P20 Pro. To resolve any unknown phone bug that prevents sending of texts, you want to factory reset your device. Be sure to back all personal data ahead of time
Hi @tolin , Try shining a torch at an angle close to the screen and check if you can detect any images at all when the phone is turned on. They will be very faint if they are there at all so trying this in a darkened room may help. If there are images it is a backlight problem. If there are no - Huawei P20 Pro

I spoke to Huawei Support Hi guys, just wanted to also add my voice to this thread as a p20 pro owner in Canada, went to bed two nights ago, and woke up the next morning to a finger print reader that not only no-longer works, but whose options also disappeared from the settings menu. I went ahead and spoke to Huawei support about it.

Cause: To ensure optimal usage safety, this product is designed with the following battery safeguards: Your phone will stop charging when its temperature falls below 0°C. Your phone will charge at a limited current when its temperature is between 0°C and 10°C. Your phone will charge as normal when its temperature is above 10°C.
Yes, the Huawei P20 lite (2019) support fast charging Fast Charging is a term frequently used to market chargers and devices capable of charging faster than the current charging standard (5 Watts). The different types of fast charging are : quick charge , adaptive fast charging and apple fast charging.
Things I tried : -Different cables -Different PC's -Allowing USB debbuging -Checking USB Always Prompt -Typing in a code in the dialer pad and configuring HiSuite in USB port options -Settings reset -Software is up to date -Cleaned the USB port from dust.
Huawei P20 Pro: 0: 412: Huawei P9 Lite 2.679; Xiaomi Redmi 4 Prime the battery in the regular P20 still offers fast charging capabilities. Huawei's custom solution requires using a
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    • huawei p20 lite charging problem