need megaphone support messenger call

if an app requires a higher ios version than your phone support then you have 2 options

1. get a new phone which meets the requirements
2. try to reach out to the developer of said app and plead with them to lower their requirements How to contact an app developer - Apple Support

Megaphone support? And what does that have to do with iOS 14? Your tag line suggests you have an iPhone 6s running iOS 15. You can't go backwards to iOS 14. So your posts don't make much sense. Please be much more specific about what you need.

Phone pe is not worki In iPhone 6s I also updated my phone ios15.8.2 and the phone pe is asking me to upgrade to ios 17 or then higher what i do