Can charge the phone, can set up a wireless network, can share the 3G network, you still expect a mobile power to do how much for you?
In my opinion, the current mobile power supply has been quite mature in terms of power supply and wireless network formation. In terms of size, although it is not pocket-sized, it is portable enough and does not take up space. For people who often carry out mobile office and business travel, this device is more widely used, at least when I travel, I will definitely bring one.