I'm in the UK. Got a brand new 4S with O2 back in October. I was VERY excited but after a month I decided to post the increasing number of issues I am experiencing:
1. BATTERY: draining very quickly. What's the point of deactivating most of the features (notifications, location, iCloud, etc) if that's why we all have an iphone?
2. SIRI: is useless in the UK for the lack of location services.
3. iCLOUD: won't synchronise bookmarks, iCal or notes. It's a nightmare, instead of "it just works". It doesn't.
4. REMINDERS: by location. Wow! I spent hours creating locations in my contacts to be reminded to. None of them have ever worked. It only works by date/time.
5. CALLS: dropping both when outcoming and incoming at a rate of 30% daily. Best phone ever? I remember 10 years ago my Nokia "brick" was flawless.
6. iMESSAGES: not delivered to other iOS devices (tried 3GS, 4, iPad) and also different carriers. As mentioned in other threads, confirms "delivered" when is not. How could something this simple, like SMS, stop working with the most advanced OS?
7. FIND FRIENDS: did not find them, it got me lost instead. Never again.
I am very disappointed as all the new features I was looking forward to use are nothing but unreliable.
Please Apple engineers, make note of all this issues to fix them and make me (and other millions of users) proud of having the best iphone ever. Thank you!