I have never been happy with my vodafone725 mobile made by vodafone I bought 8 weeks ago compared to my last phones the signal is terrible .What I want to know is as it is going back to makers to be looked at and may take a few weeks I need to buy another phone.If I buy a cheaper priced Samsung (not a vodafone)can I still use my vodafone sim card in it so as everyone don't need to change my number. I have the original sim card i got with phone so that will be put back in it. Thanks if you can understand what I mean.