Yesterday my iPhone 4 starting showing all the signs of a failed battery - the back of the 'phone was hot and it could hold a charge for around three hours. Darn - replacement handset with all the attendant messing around (although it a lot easier than it ever was on Windows Mobile!).
Anyhow - Googling around brought up a few sites with folks suggesting the mail daemon can get stuck trying to synchronise with Exchange and merely turning off push and letting the 'phone entirely discharge (or doing the hard-reset method of holding down the home and power buttons until the 'phone has powered off and restarted) and then re-enabling push sorts it.
settings>mail,contacts,calendar>fetch new data>advanced
By jove - it did the job. I can only assume the handset burns through the battery by keeping a data connection open continually.
I haven't blogged much recently because I've been on holiday. Pics here
I haven't blogged much recently because I've been on holiday. Pics here
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