Why is the bluetooth connection interrupted?

Question

Android

My smartphone is mi s2. airpods 2
only with airpods, the connection is interrupted (sometimes)
sometimes the sound is not transmitted at all when calling
, I noticed an interruption just then:
when I call someone or
when I’m talking (for several seconds)
when I’m just plugged in it’s not used, I unlock the smartphone the connection is already interrupted
today when I turned it off on 4g settings , bluetooth connection is interrupted with airpods
tried to remove all programs associated with airpods did not help
when listening to music problems never happened
with other wireless headphones never happened

Answer 1

https://play.google.com/store/apps/details?id=org....
Bluetooth Auto Connect is a solution to your bluetooth connection problems. It automatically tries to connect to your Bluetooth devices...
...Events:
■ Device connected and device disconnected