Why does my Android phone stop responding when trying to access apps?

Steps to Fix it:

• The simplest solution to fix an app that keeps crashing on your Android phone is to force close it and then reopen it. To do so, go to Settings -> Apps and pick the crashed app. After that, tap the app's name and then 'Force stop.' Now try reopening the app to verify whether it works properly.
• If the previous two methods haven't worked, try deleting the app's data. Select the app in Settings -> Apps and hit 'Clear data' or 'Clear storage'. All data saved in the app will be deleted, and you will have to set it up again. 
• Uninstall and reinstall the app- If removing the app data does not solve the problem, you can reinstall the app. Simply remove the app and reinstall it from the Play Store.

Read More: Why won't my phone let me open any apps?