The mobile phone has no signal service, and the use of WIFI is significantly more energy saving than

This is determined by the working principle, when using data traffic, the SIM card and the corresponding module of the mobile phone responsible for sending and receiving traffic consume more power, compared to the wifi module, which is more power-saving, so what you are talking about is normal.

The two of them are not so power-efficient.

Summary. 1.FM Radio:

FM radio can use FM waves to receive radio signals from the station, and do not need wifi or data traffic to listen to the radio. 2.Radio Frequency Identification (RFID):

RFID can use radio frequency wave technology to identify and track items, and does not require WiFi or data traffic to achieve authentication and logging functions. 3.Radio:

Radios can also be used to receive and transmit signals, which can be achieved without the need for wifi or data traffic. 4.Walkie-talkie:

The walkie-talkie can use radio technology to transmit signals, and communication functions can be achieved without wifi or data traffic. 5.Bluetooth:

Bluetooth technology is also radio technology, which enables short-range wireless connections and does not require wifi or data traffic to do so.

Is there anything that doesn't require a wife and traffic to have a signal.

1.FM radio: FM radio can use FM wave to receive the broadcast bridge upgrade signal sent by the station, and can listen to the radio without wifi or data traffic.

2.Radio Frequency Identification (RFID): RFID can use radio frequency wave technology to identify and track items Minqin, and does not require WiFi or data traffic to achieve authentication and logging functions.

3.Radio: Radios can also be used to receive and transmit signals with laughing beams, which can be achieved without wifi or data traffic.

4.Walkie-talkie: Walkie-talkie can use radio technology to transmit signals, and no wifi or data traffic is required to achieve communication functions.

5.Bluetooth: Bluetooth technology is also radio technology, which enables short-range wireless connections and does not require wifi or data traffic.

If you want to use the network without wifi and data traffic, this is not possible, the most convenient is that now the network is cracked, the first buy has a wireless network card, plug in and use the number of network parks.

The thing that provides a signal to a cell-phone, but does not need to use traffic or wife, just like a router.

Wireless network card? What is it.

That's only possible with wifi or hotspots on your router.

The wireless network card is convenient for notebooks, and it is easy to carry to ** There is a network But what you said to provide signal to the mobile phone, in addition to wifi and hotspots, others are not good.