Camera quality: usable for general use but if you want a phone with a high-quality camera for taking good photos I do not recommend this phone camera. It is low quality when you zoom in.
Sound quality: pretty good! The bass is decent too and no scraping sounds. Sounds good with head/earphones too. Nothing spectacular but nothing bad.
Functions: very convenient function buttons. There's a separate hotkey button on the left that allows for a personalised shortcut function. I used it for screenshotting and sound recording. You can also use it to open a certain app.
The power button also serves as a fingerprint password button. You can add more than one fingerprint. I added 4 to mine. Works well mostly but sometimes fails to recognise the finger if you don't hold it down for long enough.
Bluetooth and hotspot and internet: all work very well no complaints!
There is an earphone jack as well.
General appearance: large screen, comfortable to hold even in smaller hands and the design is attractive.