Well sir i dont want update any new verison of iOS because of jailbreak i like to do tweaks and customize etc you can download pics/videos from instagram, facebook etc and whatsapp your friends cant see you online & typing when you type/online...so many more
Because of jailbreak i dont want update any latest version yea i know that
its good for you well my brother bought iPhone 6 64GB from the store back in 2014 he didnt open it yet so later after 2-3 months he gave it to his close friend he've beeen using it for 1 year or so then i bought that in 2016 i dont remember , a few weeks ago i replaced old battery with the one new, its all good...