Q: iOS 10 painfully slow on iphone 6

If you have not restarted your iPhone since the update, try that: Restart your iPhone, iPad, or iPod touch - Apple Support.

Same issue ERRRR

same issue. Every aspect of the phone is slower! Opening apps, the phone app, etc. Quite frustrating!

That hasn't been my experience at all.

Try restoring iOS and your backup. If that doesn't improve things, restore iOS using iTunes and set it up as a new phone. There may be a problem (corruption) that is contained in your backup.

I too experienced this with my 6.  I upgraded to 10.1 on Friday 16th and noticed lagginess immediately following completion of the update. Most apparent was the slowness of the camera to start when activated via swiping on the lock screen.  Its now Sunday and I've just restarted the phone for the first time since that Friday installl and, fingers crossed, the lagginess appears to have gone away.

As other have suggested, the best option may be to backup via iTunes and then perform a complete fresh restore of that backup.  At least that way you know that everything is restored in order and as cleanly as can be.

I would backup to icloud and do a clean install, then setup up as a new phone.

I have the same problem..I've restarted and it's the same painfully slow experience!!!!!!!!!!!!!

I had the same issue, then 10 0.2 came out but it did not do anything to performance. RAM management is horrible in my opinion. Everything has to reopen again. Three days ago I booted 9.3.5 back on my device. One week on iOS 10 was enough. It's really not a great update for devices without 3D touch.

9.3.5 performs like an iPhone should perform, that's why I am going to wait a while before upgrading again.

Can you explain better, step by step?

Use iTunes on your Mac or PC to restore your iPhone, iPad, or iPod to factory settings - Apple Support

Ok thanks. Then can I replace the latest backup I have on itunes?

Please explain what you mean by "replacing the latest backup I have on iTunes"?

I dont want a new iPhone. I want to have all apps and contacts I had before