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Thanks for the suggestions. Tried them both and neither made an ounce of difference. Mobile data is set to on. 3G or not 3G that is the question.
Your part right chrisdeeming1 about the Sure Signal. You don't register the handset you just register the number. So any Vodafone numbers in the house you just register them online and that's it job done. As long as it's a 3g enabled handset it doesn't matter which handsets you use. Make sure your within I think it's a 30m range and hey presto. Full signal. I know some people aren't keen on Sure Signal but it suits me just fine. Touch wood in all the time I've had a Sure Signal box I've had no problems atall. I find the landline phone to be way too quiet so using the mobile phone in the house with full signal is ideal. Well worth the £20 for the box.
How mad is that? Phone just died so plugged it into charge, switched it on and up pops the 3G symbol. Guess it needed a power off and back on after changing the settings.
It would appear from your post that you're now getting a 3G connection on your device and mobile data is working. If this is incorrect let me know.