After updating mine Vodafone iPhone 4 to iOS 5, all was working well, except no data connection.

Error: Could not activate cellular data network. You are not subscribed to a cellular data service.

I found mine solution at: http://www.iphoneclub.nl/iphone-tips/telefoonfuncties/probleem-met-mobiele-datanetwerk-oplossen/

 

Personal Hotspot

One very nice thing about the iOS 5 update, is the return of Personal Hotspot. On my iOS 4.3.3 update the menu item Personal Hotspot disappeared, now it’s back, so I can share mine internet connection on my iPhone with other devices.

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