Why is Android 4.4.2 - Phone Dialer & Phone Contact is hanged up?

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Why is Android 4.4.2 - Phone Dialer & Phone Contact is hanged up

I have Lenova Phone with 1 GB RAM & 8 GB storage. Last few month the Dialer & phone Book is getting hanged or not responding. Twice have erased all data & reset the phone.
All applications are like whatapps, Facebook, Gallery are working fine not challenge of RAM for this applications.
The contact & dialer after several restart & using RAM booster starts.
Please suggest the resolution for this issue.
 

B. Diddy

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Re: Why is Android 4.4.2 - Phone Dialer & Phone Contact is hanged up

Welcome to Android Central! I'd uninstall the RAM booster. Those apps often cause more problems than they solve.

Try booting into Safe Mode, which temporarily disables all 3rd party apps. On most Android devices, while powered on, press and hold Power until the Power Off menu appears. Press and hold the Power Off selection until the Safe Mode prompt appears. Tap OK.


If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem.