I bought the phone through flipkart,
The phone doesnt have cyanogen logo on the backside.
initially it runs on cyanogen 11 and android 4.4.4. but it got updated to cyanogen 12 running on android 5.0.2 within a hour.
It already has a screen guard on top of the phone.you may or maynot add an extra screen guard/tempered glass.
Everything else regarding the phone is perfectly alright and running very smooth and fast. The phone also comes with a 2A charger, which charges the phone very quickly.