When can I expect an auto airplane mode?
When there is no signal I would like to save battery life in my iphone, as well as stop the signal searches. Mayby have a way to have a setting to search for signal every 15 or 30 minutes.
iPhone 4, iOS 6.1.2
Interesting idea. I've never heard of a phone that does that. Submit your feedback directly to Apple using the appropriate link on the Feedback page:
Best of luck.