What can I do with my Apple iPhne 4 ?

[Geek-9pm]

It has been years ago I used it as my phone. It was very expensive. So when the business folded, I stopped using it and got a cheap phone.

But it still works. Kind of sort of. I can get Internet via my witless. But now it is having a hard time. Maybe I got a virus? How can I reset the iPhone 4?

My knowledge of Apple stuff is very limited.
( I once had an Apple ][ a long time ago. )

Any ideas?   
 

[DaveLembke]

https://support.apple.com/en-us/HT201252   Maybe its there somewhere.

[J_Brown]

What is the current iOS version?
It may work slowly due to the increasing hardware requirements of the new iOS versions. I have an example of iPhone 4s that still works great, but it has not been upgraded.

[rosbert]

After resetting it, turn off background app refresh, unneeded location services etc. to improve the performance of your phone.

[Geek-9pm]

Thanks for the tips.

[mattewlls]

Use it an alarm clock