Phone lag to response

There are three reasons to cause phone turning off :

• By incompatible software you downloaded. 

• The trash in phone hasn't been cleared for a long time. 

• Phone stays on all the time without rest. As we know, when computer is on use for too long, its reaction will become slow or stuck. It’s the same to phone as well.

So what should we do to keep phone swift and smart as it was originally ? 

Well, to download phone software for trash clearance, and clear the phone trash from time to time is the easiest way. Besides, we should form good habit to turn off phone at night time to let phone have rest.