1. Connect the wireless signal first, then open the setting center of the mobile phone and enter the network setting.

2. Click the lock symbol next to the wireless signal name.

3. You will see whether it is 2.4GHZ or 5GHZ.

2.4ghz wireless technology is an open source short-distance wireless transmission technology. 2.4GHz refers to a working frequency band, and 2.4GHz ISM (Industrial Science and Medicine) is a wireless frequency band, which is widely used worldwide. Bluetooth technology works in this frequency band, which can get a wider range of use and stronger anti-interference ability. At present, it is widely used in household and commercial fields. Short-range wireless transmission and conduction technology.