Why does post-Metta calm shatter with an urge to check my phone?

As soon as the guide stops talking, I am overcome by a desire that is impossible to resist: to pick up my phone and check notifications. I am unable to maintain the calmness of post-meditation. I believe that this sudden need to be distracted is an indication of my anxiety coming back. How can I bring tranquility to my hectic life? My name is Raj, DOB 11th November 1992. Time: 8:30 PM. Location: Jaipur.