Any other people with an iPhone 5S and 9.02? Is yours slow and glitchy or is it just my phone?

I got my iPhone 5S in January and it's been great since then. When iOS 9 came out I updated it and let me tell you that was AWFUL. My phone was unbelievably slow, I almost wanted to get a new one. Now I've had the newest update for a few days and it's a lot better but my phone is still laggy and glitch. The biggest problem is slow internet, slow start up, and when I get a notification message and try to type, the keyboard disappears. Does anyone else have these problems or is it my particular phone?

I have iphone 5S but I always wait several months before updating the new OS, so I'm still on 8.

  • When someone gives you something, is it yours legally? Basically, my (now ex) boyfriend gave me 2 phones while we were together. One was because i lost one my phones and the other one was a gift. He never mentioned that i would have to give either of them back if and when we broke up. But now we have he is demanding i give them back. He has a perfectly good working IPhone 4S. So do i have to give them back or are they legally mine? Because neither me or my dad have money to buy me a new phone at the moment.
  • What happens if you place a sim card into an iPhone that is not yours? Just wondering… If someone stole my iphone (at&t) and restored it, giving me no possible way to track it, would they be able to put a sim card (at&t) and use it… Or would that allow me to possibly track it?
  • Is it possible to have access to another iPhone by using yours? If I had two iPhones, both being jail broken, is there a way I could access & control the other? If so, what tweak would I have to use? Available on Cydia? 10 points for best answer… Thanks!
  • I downloaded iOS 7 on my iPhone 4 (CDMA) an now it's slower and glitchy? How can I fix this? I downloaded it after backing up and and restoring it then I restored the back up with iOS 7 but my phone is really really slow, like everything is delayed especially when I type