I don't see any difference in battery improvement. My play store still won't open on my wifi at home but works in the campus. I don't know why this happens
Connection to Glonass satellites is working again. GPS has a new icon in top bar. Some underhood changes also, ROM is faster and more stable.
2 years ago, windows phone have Kids corner.. Good copy samesung.
Is it now the "updates" are gonna make the s4 stop to a crawl, so customers realise they should buy the s5?
Knox is purely a malware. Biggest function is to deny your warranty if you flash something Samsung don't approve.