Last Updated: May 16, 2014
You may have performance issues if your Apple iPhone 4:
Try each of these steps to see if it helps improve your phone's performance.
Perform a soft reset.
A soft reset restarts your phone and does not erase any of your content or data.
Determine if your phone has low memory.
Close background applications.
Some apps continue to run in the background after you exit them. Sprint recommends that you close background applications when you're not using them.
Verify that your Apple iPhone 4 is running the most recent software.
There may be a software update that improves battery life on your phone. Check for software updates.