| | ztc-t88 Invalid Sim
I have an unlocked schauen ztc-t88 mobile phone that has worked fine, until i decided to change network. i have tried to use the new asda sim and vodafone sim, but i get "invalid sim" when i switch on, then emergency calls only. does this have something to do with the sim cards being 3g. when i install the same sim in a nokia phone, it works fine, but displays a 'G' on the phone. would this be the reason why the ztc-t88 doen't work with these new sims. it works ok with orange, o2, t-mobile, virgin, etc.