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If the hardware switch is controlling rotation lock ala iPad then one solution should be to change that in settings so that it controls mute/unmute (sorry, my iPhone is in my purse so that's the best I can offer at the moment)... How do I silence the ringer on my 6 plus using ios 9 beta 4 *IF* the switch only toggles rotation lock? --short of downgrading, wiping the phone, or my fav sarcastic b.s. response: wait until ios 9 final is released..
i reckon no one has a noncheeky answer to this one (that hasn't been said above)
1. Plug iPhone into computer
2. Put in DFU Mode
3. Restore the device to iOS 8.4
4. Don't try to use 'beta' software on your primary device
Posting the same question 7 minutes apart doesn't get it answered any faster. And restoring is the only way if you no longer have that setting inside the settings app anymore.
I've always always used beta software on every iPhone since the 3GS. My father is a developer. It's more fun than jail breaking and legal. I don't mind inconveniences that it can cause sometimes. If I did, I wouldn't do it. I just wanted to know if there was a possibility within the parameters I set in the original question. If the answer is, "no, there isn't a way and I should know because I've tried," that would be great. I don't know how all the needless venom would assist anyone.
Reset all Settings
Go to Settings >General >Reset >Reset All Settings
I have never used 8.4. Seems it has as many bugs as beta iOS 9. Despite battery drain, iOS 9 beta 1 has been the best out of the 4 for me
Where you hear that? 8.4 has been very stable and battery is fine.
I've noticed it myself in my brother's iPhone. Audiobooks leading the list of complaints.