Hi Apple Team,
I am experiencing the same issue…from last 2 Months….tried everything from resetting to everything mentioned on forums and youtube and yet the problem still exists…. only new thing besides ios update is my new esim , After adding E sim , I am continuously facing the same issue It is really disgusting. During call network suddenly goes after 1- 2 Minute. I visited Future World - Apple Authorised Reseller & Authorised Service Provider GK-2 Delhi.
That guy has no solution after he suggest me to Reset Device , I did the Same but issue exist.
Please resolve this issue.