Does Xiaomi's mobile phone have an overvoice function similar to Apple's, which can be read aloud? My Xiaomi wants to use it for my mother, who can't use a smart phone.

Hi!

By default, Android doesn't have screen reading software like "Windows Narrator" or VoiceOver. MIUI is a third-party operating system based on Android, which seems not to come with it.

Try using third-party software.