When should I close the apps running on my iphone 5?

When should I close the apps running on my iphone 5?

You can close the unnecessary apps by the backgroud(quickly push the home button twice). If you open too much apps, you will find the iphone will be solwer.

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You can close them whenever you want to. Close extra running apps.Did you use Transcribeme app?
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Although it is popular belief that closing "running" apps will increase performance, it's not exactly true.iOS is built so that when switching apps, any non-active app is put at an extremely low state of power. Most don't even consider it to be running in the background, but rather just preserving the state. Because of the iPhone 5's processing power, you can preserve many apps without having them "reboot". If you truly feel that closing them is best for you, I would recommend doing so when attempting to run an intense game (Vice City, Infinity Blade 2, among others). This will give the foreground app a bit more "wiggle room" to run at its maximum possible performance.