You want to buy a wireless card online, to consider the following points?
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Whether it is Pinduoduo or Tmall selling some traffic cards, these traffic cards can be collectively referred to as the Internet of Things card, the actual traffic and download traffic of the Internet of Things card are different, and after using for a period of time, you will find that the download speed will slow down, which is 1\/3 of the speed of our normal business hall for 4G card network, or even lower. Although the Internet of Things card traffic charges are particularly eye-catching, you should note that most of these cards are recharged through the wechat public account or the website, rather than the card you use, which can be formally recharged through the Alipay business hall
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Therefore, the Internet of Things card you use may be normal in the first month of use, but it cannot be used normally in the second month, or the card is directly commented out, or the possibility of no signal suddenly occurs after recharging
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The most important point is that many Internet of Things cards purchased online do not need real name authentication, these cards have a certain risk, at any time is blocked by the operator, the card will be scrapped directly, the 4G signal will become two g signal, or no signal
Wireless card is now highly transparent, very reliable, but still have to be careful of bad merchants, beware of being fooled.
There are two types of wireless network cards, one is removable hardware, that is, a dedicated network card for desktop computers to connect to wireless networks, usb interface. It can also be made into a network hotspot, as wifi use, equivalent to letting the computer also have a router function, this product technology is mature, does not exist reliable, the price is cheap, more than a dozen pieces.
One is the wireless Internet traffic number card provided by the network operator, which is divided into a monthly card and a traffic limit card, the former is the same as the mobile phone card, and the latter is no longer used up.