@traceyfozz Thank you for the feedback. This solution suggested by Apple might well work if you remain in your current time zone. But if you travel to another time zone then the phone won't update the time correctly since the Location Service for "Set Time Zone" is switched off. So I am afraid this is not a permenant fix for someone like me who travels the world frequently. Let's hope Apple will issue a proper fix soon.
A few points to note in my particular case:
Problem is with my iPhone 4S 64gb, Factory Unlocked. iOS 5.0.1 (9A405).
My iPhone 4 32gb Factory Unlocked, iOS 5.0.1, is not affected using the same SIM card.
I am on the Vodafone network in Mumbai, India. I travel the world frequently and use my Mumbai SIM on roaming. I do not use 3G, only use Edge, and that too only in Mumbai. I do not use data swrvices on roaming.
I have had this problem of incorrect time zone and incorrect location since 14th Dec. Before that, my iPhone 4S worked perfectly no matter where I was in the world.
It's not a 3G issue, since I only use Edge. My iPhone 4S worked fine on Edge until 14th Dec. Moreover, when I'm on roaming, I do not have Edge switched on, yet the phone worked fine without Edge.
My iPhone 4 on iOS 5.0.1 works perfectly on the same SIM card even now, has never once showed incorrect time zone or location. Only my iPhone 4S is affected.
From surfing the net, it seems the problem suddenly started affection a large number or users starting 13th Dec onwards. Before that, very few users reported the problem, and if they did, it was mostly about wrong location within the local area or local city, rather than random time zones all over the world.
I have tried all the following:
Reset location Warnings
Reset Network Settings
Reset All Settings
Normal Reboot iPhone
Hard reboot iPhone
Full erase and restore phone and set up as New phone via iTunes on my Mac.
None of the above fixed the problem.
I will now try restoring from the new (9A406) build of iOS 5.0.1 and also try the remedy suggested by traceyfozz.
I have sent a detailed report to Apple.
Let's hope Apple fixes this problem soon. I request other members to post their findings here, especially those that have had feedback from Apple.
Regards to all...