Regaining control over your phone

Turn off notifications for all the apps on your phone, so you don't have to put your phone in do not disturb mode. That way, you have more control over what you see on your phone.

The point is to use your phone mindfully. Consider if a specific notification will be useful to you.

Newer versions of smartphones have a built-in Do Not Disturb feature that limits your phone buzzes to only the essential contacts.

You can also turn on the airplane mode feature to silence everything.

To focus on your work, do not allow intermittent phone calls. Rather request your colleagues to take messages.

Once you're done with your work, return earlier calls.  Ask them about their concerns, take notes and confirm that you are attending to their requests.