iPhone calling button glitch ios 26 beta 2

"kindly solve the issue asap" -- bit rude.

Anyway, you should probably raise this as a bug in the usual way. It won't really get progressed if it's only posted in these Developer Forums.

You need to raise each issue you find separately at https://feedbackassistant.apple.com/ You can post the FB numbers here if you want, so that others can link to them.