What about the cell phone? No signal Problem resolution rollup

Cell Phone no signal:

See if your position is in a blind area right now, blind areas, including the network coverage area, such as workshops, factories, suburbs, rural areas, such as not yet to build network communications facilities, as well as the city signal mobile phone is blocked by shielding the signal can not cover the place, such as office buildings, bars, elevators, underground places, buildings and other places.

solution: Get out of the space where there may be no signal and make a call to a wide area.

There's no signal on the phone. Two:

If the location is not a problem that may be caused by interference facilities, mobile phone reception signal is through the spread of electromagnetic waves, so the base station through the transmission of radio waves and mobile phone to establish a connection, so as to achieve the purpose of voice calls. The interference of electromagnetic waves will affect the signal of mobile phone, this kind of situation will appear in the examination room generally.

Solution: Find the surrounding signal jamming device, close or remove it.

Cell Phone no signal three:

When the network is particularly busy, there may be temporary failure, which will have a certain impact on the phone signal. such as in the bustling business district will often appear phone can not go out, other people can not enter the situation, especially in the peak, commuting and holidays often occur delays.

Solution: Avoid the bustling business district, peak time, signal conditions will automatically improve.

Cell Phone no signal four:

Not external factors caused by the cell phone no signal, it is likely that the battery voltage instability caused by the signal received circuit power supply, voltage fluctuation state, the reception of the signal can not be stabilized. So the phone can not access the Internet, and even the phone can not dial.

Solution: A higher quality of the phone, signal problems will be repaired.

If the surrounding signal is OK, then you can also check the software aspect of your mobile phone, whether there is software to launch the flight mode, or the regular task call flight mode, whether some software on the opening of the intermittent signal connection. Clean up your phone's memory-running software and try it, or reboot it.

In addition, if the phone often has no signal phenomenon, you can also see if the SIM card problems. Put the card out in exchange for other mobile phone to try, to see whether it is a mobile phone problem, or a SIM card problem, lock the problem source, and then the right remedy.

Flight mode switch, re-search service network automatically

1 Long Press the Phone power button, then select "Flight Mode", open flight mode:

2 and so on the mobile phone notice bar has an aircraft icon, and then long press the power button, select "Flight mode", close flight mode:

Manual Search Service Network

1 on the phone's standby desktop, click the Menu key, and then select settings:

2 Click Wireless and Network:

3 Select "Mobile network":

4 Click "Select Network":

5 according to the card type, select your own card corresponding options. Not understood, select "Automatic, default":

6 Click "Operator Selection":

7 Click "Search Network":

8 According to the card type, select the service network:

If you can not find the signal, please select the most recent mobile phone service shop to send repair

Attention matters

If the switch flight mode is unsuccessful, you can try restarting the phone.