I've just purchased a 4G prepaid sim today and inserted into a (telecom) samsung gt-5511t but its not recognising the sim card. I use to have an old prepaid vodafone sim that my son used in this phone and it worked perfectly - I'm suspecting the new sim has some properties that are not compatible with this old phone??!!
Please tell me I'm wrong and theres a simple solution to this problem.
Cheers
Maurice