Mobile phones are complicated and faults with them are quite common, but what is the most common type of fault of all with Android phones? You will be shocked by the answer and the solution.

Many phones are returned with faults and when they are tested, it is found that actually they are OK. The most common fault is actually the user using it wrong.

According to a report released by Lancco Technology Group nearly 3 in 4 Mobile Devices Returned in Europe and North America Have 'No Trouble Found'.

That’s right. There is nothing wrong with them!

The problem is that many people load app after app and some phones end up with hundreds of them. They use storage space of course, but the main problems are that many of them run in the background and they use processing power, which means that there is less for running the app you want to use. They use memory, so there is less for the apps you want to use. They use battery power, so the battery expires unusually quickly.

Having a large number of battery draining apps on the phone means that it won't last the day on a full charge and you end up having to charge it twice every day. This makes the battery wear out faster because it can be recharged only so many times.

Not only do they use storage space, memory, and processing power, and drain the battery, they constantly update with notifications. They also put icons in the notification bar at the top of the screen.

Another problem is that people don’t quit applications. They switch from one to the other. People run an app, then press the home button and open another app, press home and open another. Android suspends each app in the background and the number of suspended apps grows and grows. These suspended apps clog up the system and cause strange problems.

So basically, the main problem with mobile phones, and Android is slightly worse than iOS in this respect, is that we are using them wrong.

The solution to the problem is to quit those running apps, reboot, and remove any that are unnecessary. Your phone will then start working again.

1 Quit running apps

To really quit an app, press the app switcher button. On a Samsung Galaxy S6 it is the left button of the three at the bottom. On a Google Nexus 7 it is the right button. On a Samsung Galaxy S4 you hold down the home button. It varies from phone to phone.

Press the right button and the screen shows all the apps suspended in the background. Swipe them away or click the cross button to close them. When they are all gone, press the button again and check that they really are gone because sometimes only the most recent apps are shown and you have to repeat the process.

Quit running apps in Android

2 Restart the phone

This sometimes solves strange problems. Hold down the power button until a menu appears on the screen. Several options may be displayed and you can either power off or restart. Choose restart if it is available, but if not, choose Power Off. Wait a few seconds and power back on.

Restart the phone

3 Uninstall apps

Pull down from the top and tap the gear icon or go to the all-apps screen and tap Settings. Find Application Manager or whatever your phone calls it. This shows a list of apps installed on the device. Find an app you don’t need and tap it.

Press Force Stop, Clear Cache, Clear Data, and then Uninstall.

Uninstall Android apps

Remember these three tips the next time your phone is acting strange and is refusing to function correctly.