Yes, but there will be a special data card, you can buy a special data card, so as not to waste the data of your mobile phone card, plug in the portable wifi you can use your own phone, you can also give others to use.
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Portable wi-fi sim card refers to the 3G and 4G version of portable wifi, which is different from the portable wi-fi of the USB interface on the computer.
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The portable wi-fi directly inserted sim card is actually similar to a mobile phone, plug in the network card, and share the mobile data traffic in the form of WIFI. The device usually requires a power supply and is the size of a mobile phone.
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Portable wi-fi on the computer side is to share the network of the computer to other devices through USB, in fact, it is just equivalent to the function of a wireless router, USB power supply, no mobile power supply, small size
The 4G version can use a mobile card.
Now the portable WiFi is divided into two kinds, one is the USB version, one is the 4G version, the 4G version can use the mobile phone card, as long as you put the mobile phone card,
It can use the traffic on the phone, so that as a hotspot your phone can be used.
But the USB version is not able to use 4G mobile phone card, only on the computer.