Have old iPhone model? Slow? Maybe you can make it faster.
I have a charmingly antique mobile phone – an iPhone 3G – not even a 3GS. It .. has .. been .. getting .. slower .. and .. slower. When iOS 4 came along I cursed the deep slowdown, but Apple worked on that and it did get better for a while.
But since then the performance has continued to tumble. Sometimes, simple actions were taking several seconds to complete. Even typing was very slow in some apps.
The answer turns out to be the number of apps in the phone. After a period of gritting my teeth, and ruthlessly deleting every app that I didn’t absolutely need and use, the performance is now much better.
Worth a try if you have this problem and are waiting for the iPhone 5 to appear.