hi just brought Share Android Tablet 4.0, I tried to use the portable wifi hotspot feature, initialy it was good since I was able to connect my Iphone 3g and Samsung phone to the device. The wifi signal on the Iphone and samsung phones are at max signal, but when I tried to use the internet connection, I wasnt able to connect online, "not connected to the internet" error msg appears. Do I need to set up something either from the phone or tablet to make this happen? help! tnx...