Iphone memory used up by "Events"
My iPhone 4S started behaving strangely after upgrading to iOS 7. The memory fills up within an hour, and after this I have to reset it to free up again. In Settings:General:Usage it says that the additional memory is used in "Calendars & Reminders". More specifically in "Events".
I logged the memory use from the phone being "empty" until the memory was used up after around 45 minutes.
This is what it looks like in the usage overview. Note how the Calendars & Reminders are suspiciously big.
Using IOS 7, on a 16 Gb iPhone 4 model MD235B/A. Model firmware is 5.0.00
iPhone 4, iOS 7