With an usb modem you can access the internet, but you cannot share the wifi with your friends; with a 3g router you can connect your iPad, iPhone, smartphone, android tablet, psp to surf internet simultaneously, but the price is always higher than your budget. Now Mobile power bank and portable 3g wireless router 2 in 1WRB201 will be your best choice, this new device can not only share the wifi with your friends, it also has the same function of 3g wireless router, besides, you can charge your iPad, iPhone for emergency and the price is more lower than…