For those that are iPhone and iTunes savy, you can make ringers that are natural sounds. If not, you can find someone who can.
My ringer happens to be a pig squealing.
I switched from android to iPhone last year, and finding someone with a charging cord nearby is the biggest plus. The battery lasts for ever when idol. I went four days without a charge as an experiment last week, with this thread in mind.
In emergencies, seconds matter.... Waiting for you phone to come on takes a bit on most models.
Texts will go out when calls won't