Can I use a flow card without a mobile phone card?

Without a mobile phone card, you can use a flow card.

Mobile phone cards usually refer to ordinary mobile phone packages, and mobile cards refer to network cards.

The main difference between mobile phone cards and mobile phone cards is that mobile phone cards have voice function, while mobile phone cards are pure data cards without voice function. The types and specifications of SIM cards used by the two are basically the same.

At present, all smart phones on the market support inserting ordinary mobile phone cards or mobile cards. If you insert an ordinary mobile phone card, you can use your mobile phone to surf the Internet or make a phone call. If you plug in a flow card, you can use your mobile phone to surf the Internet, but you don't support calls.