u/Strict_Explanation83

I took this photo at 15 x zoom but the photo zoom quality is not clear. Has the camera quality degraded or is it like this from the beginning. I bought this phone just 4 months back.

Phone is on the latest software version.

How to clear system data as it is occupying around 20 gb storage.

Can i update to the below version. How is this version in terms of battery.