setting time zone

Turn airplane mode on and then off, or turn your phone completely off (hold the top button appears, and then slide the slider), then turn it back on again.

Thanks for the airplane mode tip. This fixed my auto time zone from Denver to Los Angeles, where it should be. Glad I discovered your post.

Thanks for the info... I found the power down option, but wish I would have tried the airplane mode to see if that worked...

My question for Apple is, WHY??? This is a smart phone, even my old data phone (non-smart phones) would update properly for DST using tower data, or otherwise. Seems like a strange oversight for a phone that is supposed to be this advanced...

I finally got switched to Cupertino from Denver using the suggestion above re airplane mode. I noticed someone's tz is Los Angeles. Since we are in the same tome zone, does mine say Cupertino because I am about 2.5 hours from there? Are there a few Auto 'choices' for auto settings for each state? Can I set it to Auto with my own town in there? I don't care that much as long as I have the right time, but I was curious.

Chessmont, alas, I too reverted to Cupertino after double checking if it stayed on current time & zone. (I rely heavily on my phones alarm app, so I was a little paranoid about it). After reading several posts, I've decided to leave the "set automatically" off until there is a fix for iOS 5.

Yes, A Gnarly, it is odd...

Didn't work for me, sadly. Neither has powering off.

I'm in Phoenix. Yesterday my iPhone (according to "Date & Time") showed me in Cupertino. Today it thinks I'm in Denver. Neither Power On/Off or Airplane Mode On/Off make any difference, still thinks I'm in Denver.

This is sort of OK from a time standpoint. Before the DST change Phoenix and Cupertino were the same time. After the DST change Phoenix and Denver are on the same time. However now calendar items that I create on the iPhone are incorrect every where else (Google calendar etc.). If I turn off "Set Automatically" and force my iPhone to Phoenix then calendar events are correct.

So anyway "Set Automatically" is Off for me. Kind of a drag 'cause it's nice to have the iPhone automatically be on the right time when I travel.

My calendar time is an hour off but time changed correctly. What's the fix for this?

I had the same issue... I had mine set to Auto, and it chose Chicago originally (I live in Texas.) After the daylight savings time change it was working properly for that first hour at least (I was up working at that time, and checked.) But when I woke up this morning, it was an hour behind due to the time zone automatically changing to Denver. It wouldn't let me select it to change it until I mad the Date & Time Set Automatically turned to off, then I selected Dallas, and when I turned it back on, it re-set it to Denver.

I tried the Airplane mode trick, and it worked for me. But it did change my Dallas back to Chicago when I turned the Set Automatically back on. At least it's the same time zone again...

Went to sleep in Toronto and woke up in Halifax, so says my 4S.

Apple fail.

Power off / reboot your phone to get the time refreshed properly. Probably an AT&T issue as my wife's Samsung phone also had the incorrect time this morning. Rebooting both phones fixed the time.

Me too, I don't even remember boarding a plane!

Don't think it's a service provider issue... I am with Rogers in Canada, my iPhone 4s didn't update, my wife's Motorola Razr, did...