What is this? It's from the ethnic village police station, and there is a telecom card in it. How to use it? Solve Kunming Yunnan Minzu Village Police Station

In fact, this is something between the walkie-talkie and the mobile phone, but the frequency is fixed (that is, the card), but the number cannot be played. You can also hear the same frequency, which is more convenient than ordinary walkie-talkies, but it costs money. Compared with mobile phones, mobile phones have fewer dials and more functions. The same card means the same frequency, which saves a lot of trouble across frequencies. Finally, he was a walkie-talkie, a walkie-talkie with a card.