Once again a few forum posts is no where near the millions that are seemingly fine, to be honest your posts are borderline delusional.
I use my phone extremely heavily and most likely more then anyone recharging my 6 Plus almost twice a day cause i use it so much, using complex apps and having a advanced workflow, and i dont really experience issues, no where near like your exxagerativeness. And to be honest there is so much posts that go against what your saying and that agree with me
Of course iOS isnt perfect and has glithes and bugs, what software doesnt? But your sheer hyperbole and pure over exaggeration is just borderline delusional. You have literally nothing good at all to say about your plus, and many many many many dont see eye to eye with you in that catorgory
Its the same thing every year, "i have this bug and glitch" it wont be different next year or the year after, software will always have bugs and glitches, thats just the nature of software today.
Im 100% sure there was a forum poll not to long ago at all that said "who has issues with their iphone 6"? And "who doesnt?"
The "who doesnt" poll vote beat the "who has issues" by a count of over 4x, the poll consisted of over hundreds of users on this forum
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Something may be wrong with your Plus then, coming from the 6 I am getting easily over 30-40% better battery life and i get over 4 and a half hours on screen time every charge
Im getting spectacular wifi performance on my 6 Plus on a wireless N network, for the first time i can say my wifi does not drop anymore in iOS 8 ever, im pleased with the better wifi peformance over last iPhones. Also RAM has nothing to do with loading videos from youtube or whatever, the Google Youtube app just sucks and has poor streaming performance, i use protube and its a 64 bit app and its a ton faster then Youtube, it blocks ads, is a 64 bit app (which means really fast), and i can set default playback option (i have it at 1080p) and streaming performance in Protube is amazing, i am loading 1080p videos extremely fast like i should unlike the Youtube app which seemingly doesnt really wanna stream ever in 1080p
Have you tried a hard reset (hold lock button and home button until device shuts off, dont worry it isnt a factory restore just a hard reboot)
And yeah one thing though its been known that 3Rd party keyboards dont work too well on iOS yet and can be causing those glitches and issues in imessage and sometimes when you type , instability from the 3rd party keyboards and its also from iOS side that Apple needs to work on more to help improve 3rd party keyboards
And what are you talking about Apple and you complaining about your device storage? Did you delete the iwork apps that all come pre installed with 64/128 gb iPhone models? Those iwork apps(iMovie, Garageband, iTunes U, others) take up a few gigs
It is folks like you who come across as being extremely condescending and spoil a forum like this. Either state your issue, help folks, or move on. Most of us are looking for confirmation or help with an issue.