Please tell us some basic information before asking for help:
Rooted or not:
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app): Phone app
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
I accidentally Uninstalled the phone app 😊, would you please help me on how to install it again.