Yes, iPhone Changes Automatically for Daylight Savings Time
We’ve received quite a few questions about the iPhone’s clock and if it will update automatically for Daylight Savings Time, the answer is: Yes, the iPhone automatically changes time to be correct with your time zone. So does the iPad, iPod touch, and Mac OS X. You do not need to change the time manually, it will “fall back” on it’s own.
Most of the questions about daylight savings relate to past problems and bugs with iOS that caused improper clock adjustments for both the Spring and Fall time changes. The most recent bug occurred with the iPhone earlier in the year, when the clock went the wrong way or didn’t change at all. This was after the year prior had a different issue, where the alarm clock went off an hour later than it was set, and that carried further several days until the clock was manually reset.
These issues were resolved with past iOS updates and will not impact iOS 5 users, and there were no reports of issues with time changing in the UK last week. If you’re paranoid you can always set another alarm clock just to be safe, but it’s probably not necessary.
Note: If your iPhone (or iPad and iPod) didn’t switch to the proper time for DST, you may have have one of the following issues:
- Disabled a Time Zone setting for the iPhone 4S battery issue
- AirPlane mode may be enabled
- Not be running iOS 5
Check to make sure automatic time adjustment is enabled (Settings > Location Services > System Services > Setting Time Zone ON), that Airplane mode is turned off, and then a simple reboot of your device is usually enough to fix the problem. You can update to iOS 5 through iTunes or by downloading it directly here.