If you have noticed the working of phone comparing with new phone you have noticed that your phone (if old) is slow than that phone. What might be the reason of getting slow as getting older. The reason is capacity of RAM and it's utilisation. If you have phone of a greater RAM but still getting the problem so that's not surprising some facts about phone still be unknown to the user the facts off smart phones are-
1. If you are using Android smartphone than there will always an option for knowledge of running application in the background that didn't work at that time but taking space on RAM also affects your current running application.
2. So to close that background app is also a good habit.
3. Clearing cache time to time is a good habit because the internal data is also important for working of a smartphone.
4. Switch-off your phone and restarting periodically is also a good habit that thing automatically close background application
5. For an iPhone things might be different iPhone user can't see our close background running app but can clear cache and unwanted data.
6. Try to keep far from restricted sites, application or data which can affect your RAM by stating unclosed even they look like they are closed.
7. Uninstall useless application from your phone. Which you are not using.
8. Don't install apps to clear cache because that thing helps to clear cache easily but that apps create it's own cache that cannot be cleared from the app itself.
Following above steps will keep your phone smart healthy and faster.
-Er.Kuldeep Verma
(Computer Science and Engineering)