Just using it for about 9 hours today (was charged when I updated it around noon, it still has not died, 7 percent left, I have been texting (981 texts so far) and emailing, replied to 7 recieved over 40. I've made dozens of calls, all amounting to maybe an hour air time. Will also update in a few days, I can usually only last about 7-9 hours with moderate usage like today, without having to plug it in. I'd say it's doing better...
All apps including sideloaded apps (Call Recorder and Snapchat) work just as before. I will enjoy using WiFi calling when the railroad puts us up in hotels with crappy service...(I'm a conductor in South Carolina)