Why is there no signal all the time, why is there no signal?

If there is no signal on your phone or an emergency call prompt is displayed on the screen, it is recommended:

2.If it is a dual-SIM phone, please check whether the SIM card is activated: Settings - SIM Manager - SIM1 SIM2 - Click the SIM card icon - slide to turn on (the operation mode may be slightly different for different models of mobile phones).

3.If there is still no signal, it is recommended to turn off the SIM card and remove it, wipe the SIM card chip with an eraser, and then reinstall it.

4.If it doesn't work, try to change to another location to rule out whether it is caused by poor signal coverage in your location.

5.Try to change the network mode to 3G or 2G (do not select the auto-connect mode). Note: Some machines do not support changing the network mode.

6.Try to change another SIM card.

7.Update your phone's system version: Settings - About Phone (About Device) - Manual Update Automatic Update (Software Update System Update - Update). Note: Please back up the data (contacts, messages, **, etc.) in your device before upgrading.

If there is still no signal or emergency call is displayed after the above operations, please bring the purchase invoice, warranty card and machine to the nearest service center for inspection.

1. There is no signal or the signal is relatively poor, mainly because the signal will be affected by various factors such as terrain, landform, and high-rise buildings in the process of propagation, such as the current location is in a relatively closed place, and the signal may be affected.

2. If the mobile phone signal of other China Unicom users is normal, the following methods can be used to troubleshoot:

Method 1] Turn on airplane mode, then turn off or restart your phone and try again.

Method 2] Test of changing the phone card to change the mobile phone card to the mobile phone of a family member or friend and try again.

Feedback, we will check and deal with it as soon as possible.

How to solve the poor mobile phone signal?

1. Choose a high ground to use your mobile phone.

In the past, in my hometown, the mobile phone on the first floor was often in a state of no signal, but after the rotten mobile phone was brought to the second floor for use, the mobile phone signal was basically three or four bars, and it was relatively stable. Therefore, when the signal is not good in the place where you are, you may wish to go to a higher position and use it in a place where the window is biased, and many can solve the problem of poor mobile phone signal.

2. Switch between different mobile phone networks.

There are three major network operators in China, namely China Mobile, China Unicom and China Telecom. These three network signals exist at the same time, when you use the mobile network, the signal is not good, friends with conditions may wish to use Telecom or Unicom card, so that many times you can resolve the problem of poor mobile phone signal.

3. Mobile phone signal amplifier to enhance mobile phone signal.

At present, a hot-selling device called mobile phone signal amplifier on the Internet is popular among users in remote villages, basements, and families or communities with poor mobile phone signal. A cell phone signal amplifier can amplify the cell phone signal around us, which can improve the quality of the network. It is very practical for users in some of the lower residential areas, basements.

At present, buy a mobile phone amplifier online, ** generally in one or two hundred yuan, the installation is relatively simple. The device mainly has an antenna hunger core, we install the antenna outdoors, the receiver can be placed at home, to achieve the mobile phone signal method, support China Mobile, China Unicom and China Telecom and many other mobile phone network amplification.

What happens if there is no signal on the phone?

1. Network problems or network inability to cover.

When the network coverage is not good, it is generally located in mountainous areas, basements, elevators, and when there is shielding or signal interference, there will be no signal or very weak. In the process of debugging, optimization and maintenance, the network may also cause signal instability, and the general network will return to normal, and the mobile phone signal will return to normal.

2. Problems with the mobile phone itself. Trousers.

There may be a problem with your phone's receiver. You need to go to the repair point to have a look. Of course, the factor of SIM card corruption cannot be ruled out.

There may be the following reasons for the absence of service and no signal on the mobile phone card:

1.The mobile phone card is not plugged in properly, and the contact is poor;

3.The mobile phone card, card slot or mobile phone terminal is damaged;

4.The status of the mobile phone card is abnormal (such as shutdown, closed account, etc.);

5.The mobile terminal does not support the carrier network used.

Here are some things you can try:

1.Turn the phone on and off and restart it to test it;

2.Reseat the mobile phone card and check whether the card slot is loose or deformed.

4.Test whether the mobile phone card or terminal is faulty;

5.Verify whether the status of the mobile phone card is normal, if the payment is in arrears, the mobile phone needs to be restarted after the arrears are settled.

6.Verify that the mobile terminal supports the carrier network you are using.

If the above methods still cannot solve this problem, it is recommended to contact the customer service of the local operator or consult the official customer service of the mobile phone for understanding.

What should I do if my phone has no signal?