Apple had recently released the latest update for its iOS platform, improving LTE support and fixing a few bugs. Unfortunately, iOS 6.1 seems to be having issues with connecting to the internet, sending and receiving texts and also occasionally with making and receiving calls on the iPhone 4S.
That's why Vodafone is warning its customers using the Apple iPhone 4S that they should not update the operating system on their handset to iOS 6.1 at this time.
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