Hi, I'm currently using a Xiaomi redmi note 3 16 GB version and it's great. I upgraded from a Sony Xperia E4 and don't regret it. Phone is very responsive and the camera is great, 16MP with f/2.0. If you can afford it go for the 32GB version as it also has more ram. Both are dual SIM or single SIM with an SD card
The MIUI software is great, only downside I found was the lack of an app menu. I downloaded Nova launcher to over come that, there are other launchers that work too.
Battery is great, I get 2 days on a single charge with usage on campus using mostly mobile data (thanks afrihost) I tend to use my phone more on campus than at home.
Covers and tempered glass is a little difficult to find in stores, takealot does have some, but it's a limited range, I've ordered a set from eBay and waiting for delivery.
The current software is Marshmallow with a Nougat update expected before the end of the year, some say before September.
The display is full HD, haven't used it in full sunlight but it is good on a cloudy day.
No unnecessary apps installed other than 2 keyboard apps, SwiftKey and fleksy but both can be uninstalled.
The fingerprint scanner is faster than the S6 and unlocks on the first try.
I can't think of anything else to say other than order it now, the redmi note 4 is a newer option with 32GB storage standard device