My phone app for making phone calls is not working, how can I fix it?

Looks like the phone app has become corrupted and is crashing while you make calls. The best way to fix this issue is by performing a full Backup & reset. Go to “Settings” and look under “Personal”. Make sure that you have a Backup account registered with Google, and turn on “Automatic restore” if you want to restore backed up setting and data, as you will erase all your personal information to reinstall the basic phone applications. And don’t forget to backup your current WhatsApp status or any other personal information (music, books, photos, videos, notes, etc.) that are not being managed by a Google app. I also make a list of all my apps so I don’t forget to download them all after the fresh start.