A: Yes, but rarely. Project Treble GSI (Generic System Images) for ARM64 A-only devices works. You must unlock the bootloader (paid services only now) and flash a GSI like Pixel Experience. This voids your warranty permanently.
: Multiple battery-saving modes including "Power Saving" and "Ultra Power Saving". Connectivity : Native support for Portable Hotspots and Wi-Fi Bridge. Developer Options Firmware HUAWEI Honor 9x Global
This tool queries Huawei’s official servers directly. You can download the and update_sd_cust.zip files for your specific model. A: Yes, but rarely