Hi, I eventually went to the O2 shop (Milton Keynes) who contacted the Sony rep, took my details (IMEI number) and then forced the upload to my tablet. 12 hours later the offer was in my Xperia lounge and I managed to sign up. Also, try downloading your internet/MMS settings in your phone (in "Settings" for Wifi and Networks) - this changed my experiences in the Xperia lounge. Good luck!
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