Portable wifi is plugged in, there are batteries in it that do not need to be plugged in, Huawei has these two types, Huawei that needs to be plugged in is dual-use with a similar charging bank, but that is a little inconvenient to hold, there is a small point without plugging, that is, only 4 to 5 hours, there is a better than the small point, can be used for a longer time, It is a little expensive, or choose a mixed brand afraid of not being used, and this thing depends on whether it is the whole network, such as mobile 4g has b38,b39,b40,b41. Some frequency bands only support a few of them, if you do not know where the frequency band is good, enter the mobile phone engineering mode to see which frequency band the signal is the details of their own online check, now the Internet of things card only mobile the cheapest, followed by telecommunications, Unicom I did not see, as to what kind of choice
Portable wifi generally does not need to be charged, just like the national wifi released by Tencent yesterday, as long as there is a computer that can access the Internet, you can completely plug and play it ~ I heard that there are many new features of national wifi, if you play League of Heroes under the coverage of national wifi, cross the Fire Line and other games can also enjoy the privilege of Internet speed acceleration, Mobile games such as National Town and rhythm Master can not only speed up, but also receive a free gift package every week to enjoy mobile game privileges. This aspect is particularly worth looking forward to ~ Of course, the security of wifi, it can effectively prevent the Trojan virus, with the anti-network function ~ let you rest assured on the Internet ~ Hope my answer can help you ~ Thank you