I am have a problem connecting to the internet using a Huawi Mobile Wifi-model E5331Wa-1 which was sold to me as a unlocked device even though it bears a 3G logo. In France with a SFR Sim the device connects without a hitch. In Elba, Italy I bought a WIND SIM but this refuses to connect. The Wind shop says that the SIM is OK but its my mobile WIFI router that is the problem. I have tried several different setting with two different iPads and with a Laptop running Windows 7. Does anyone know how to sort this problem?