[graeme]

Sure, but if you were content running an iphone 6 on ios 11, then it’s certainly faster this year on 12.

[josefresco]

Not really. Source: iPhone 6 user. Couldn't upgrade to iOS 12 because of lack of space. Finally made room and after being told 12 would speed my device I had high hopes. Turns out, I don't notice any difference. App launch times, keyboard launch times, and overall responsiveness is just barely tolerable. 6S devices feel like light speed in comparison.

[graeme]

You may be right actually. I looked for speed tests, and apple insider showed that some apps were faster, some slower.

I do have an old 6, but its not my main phone. I thought it was faster, but haven't used it enough to say.

I would check your battery health under battery settings. If it's under 80% that could be causing the issue.

The 6s has 2 gb of ram, which is a big part of the difference.

[josefresco]

Thanks for the reply. I actually did check my battery, purchasing one of those apps that was trending about 6 months back when news broke of Apple's throttling. Battery is fine - phone is just slow which as you mentioned is probably because of the RAM situation.