There is always no signal on the mobile phone, why does the mobile phone often have no signal?

Hello, may I ask if your phone is Mi-2 or Mi-1S? What SIM card is used, when did the problem occur, and what is the system version? Click System Update to view it. Don't worry, try the following to see if that solves the problem for you.

1. Xiaomi mobile phones come with similar security software running in the background, if you install other security software, it may cause conflicts, it is not recommended that you install third-party security software, installing these software may affect the normal use of the phone.

2. If your system is not the latest system version, it is recommended that you turn on the network and update the system version. The new system version will add some new features and fix some problems in the old version.

3. If you still can't, it is recommended that you try to back up and empty the data, which may cause interference from the data. Backup: Security Center - Backup - Create a backup and select all data for backup, which usually takes 3-5 minutes.

Clear data: In the shutdown state, first press and hold the volume up button, then press and hold the power button, wait until the white mi character appears on the boot, release the power button, do not release the volume up button, until the volume up button is released after entering recovery. Go to Recovery >Chinese >> Clear Data >> Empty all data

4. You can also use the line brush brush machine to try, the line brush is more thorough. It is recommended that you back up your computer before flashing.

bPlease flash the machine according to the flashing tutorial, flash the tutorial.

The sixth type is the line brush.

5. If it can't be solved, please go to your nearest Xiaomi authorized service station and let the engineer test it on site.

Service station address and ** query.

At the same time, 9 Xiaomi Home in Beijing, Shanghai, Nanjing, Wuhan, Chengdu, Hangzhou, Xi'an, Shenzhen and Guangzhou have opened maintenance services.

The working hours of Mi Home nationwide are from 10:00 to 18:00 from Tuesday to Sunday.

Welcome to mention it on the Know Xiaomi Enterprise Platform.

The signal in the school is blocked, wow.

The signal will be affected by various factors such as topography, landform, tall buildings, etc., and if you are in a relatively closed place, the signal will be affected. Here's how to deal with it:

1. Turn the phone on and off again;

2. Swap the SIM card to a family member's or friend's phone and try again;

3. Check whether other Unicom users around you can use it normally.

It is possible to be in a place with a poor network signal, such as in the mountains, in the elevator, in the basement and other remote places, and the base station network will lose the signal if the natural mobile phone is not covered. It is recommended to move to a place with strong signal coverage, and the mobile phone signal will naturally recover.

2. It is also possible that the mobile phone accidentally turns on the airplane mode and interrupts the signal, just turn it off.

3. If the SIM card in the mobile phone falls off and loosens, it will also cause the mobile phone to lose signal suddenly, as long as the SIM is reinserted.

4. If there is a problem with the network base station, if the local network base station fails, it will also cause the mobile phone to be unable to receive the signal in good condition, you can confirm with your friends whether your mobile phone has a signal, if there is no signal around the area at the same time, it is likely that the local network base station is faulty, in this case, you can only wait patiently for the base station signal to be repaired.

Hello, dear. I have seen your question, I am now sorting out the answer, please wait for me for five minutes, I will provide you with the information you need as soon as possible.

The reasons and solutions are as follows: 1. Shut down and restart the network search attempt; 2. If it is a dual-SIM phone, check whether the SIM card is activated; 3. If there is still no signal, it is recommended to turn off the computer and take out the SIM card, use the eraser to wipe the SIM card chip, and then reinstall it; 4. If it is invalid, try to change to another location to rule out whether it is caused by poor signal coverage at the location; 5. Try to change the network mode to 3G or 2G; 6. Try to change another SIM card; 7. Update the mobile phone system version;

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

Is there anything else you'd like to know? If there is, I will continue to serve you. If not, please kiss me and give me a thumbs up, it's an honor to serve you, thank you again.

Why does the mobile phone often have no signal, you can change the mobile phone card or mobile phone to know what the reason is, if it is not your mobile phone card problem, it is a mobile phone problem, most of it is because of the problem of the mobile phone card operator.

It may be that the location is not covered by the base station signal;

Something made of metal can have an impact on the cell phone signal;

It could be that you accidentally turned on your phone's airplane mode.

The network operator is selected incorrectly.

Affected by signal jammers.

Probably because the signal in your place isn't very good.

There is always no signal on the phone

1. It may be that the mobile phone card owes the history fee.

2. Degaussing of mobile phone card.

3. Caused by loose mobile phone card slots.

4. The current network signal is not good.

5. Mobile phone setting problems. (For example: airplane mode or turn off the card.) ）

Ways to strengthen your cell phone signal:

1. Replace the external antenna of the mobile phone.

Replacing the original signal receiving external antenna of the mobile phone with a higher performance signal receiving external antenna can effectively solve the problem of poor signal reception.

2. Replace the mobile phone signal transmitter.

Replacing the original transmitter of the mobile phone with a higher performance transmitter can effectively enhance the transmission capacity of the mobile phone signal.

3. Set up a Wi-Fi hotspot.

Building a Wi-Fi hotspot at home can effectively enhance the reception quality of the mobile phone signal, thereby improving the mobile phone experience.

4. Change the SIM card.

Replacing the original SIM card of the Natu mobile phone with a higher performance SIM card can effectively improve the signal reception quality of the mobile phone.

5. Change the network operator.

Replacing the original network operator of the mobile phone with a more stable network operator can effectively improve the signal reception capacity of the mobile phone.

6. Use a signal booster.

Using a signal booster at home can effectively enhance the reception ability of mobile phone signals, thereby improving the experience of using mobile phones. <>

The problem of no signal on your phone can be caused by a variety of factors. One of them could be the location of your location, such as poor coverage or a building blocking the signal from your location, which can cause your phone to not receive the signal. Another possibility is a signal transmission problem, the transmission of the cell phone signal is affected by weather, interference, etc.

Finally, if you're using an older phone or if the SIM card itself is malfunctioning, it can also cause signal issues on your phone.

To solve the problem of no signal, you can take the following methods: First, try to go to an open area with no obstructions, move the scum a little, and see if the signal becomes better than the pin. If this doesn't improve and there is still no signal in a similar location, consider changing your SIM card or getting a new one.

You can try to choose from big domestic brand mobile phone manufacturers such as Huawei, Xiaomi, OPPO, etc. In addition, if you often encounter signal problems, you can consider choosing a mobile phone with strong signal reception.

If that doesn't work, some phone manufacturers offer solutions that use external devices such as signal expansion or enhancement devices.

In short, there are many different causes of mobile phone signal problems, and taking appropriate measures should be combined with the actual situation, and sometimes changing the mobile phone card or changing a mobile phone with better signal reception can solve the problem. <>

The phone always has no signal, maybe the signal is bad, the phone is broken, etc.

1. The signal is not good.

The mobile phone always has no signal, it may be a bad signal, walk around the location and find the strongest signal of the local friend Yuanfang. This will help you understand which region is the best place to receive airnews. Otherwise, the phone is broken.

Generally, it is caused by the mobile phone often falling on the ground, and if it is broken, it can be repaired.

2. The phone is broken.

If your phone has physical damage such as a cracked screen, keystrokes, or other hardware failures, it may need to be repaired or replaced, and if something goes wrong with your phone's software, you can try clearing the cache or resetting your phone.

The physical hazards of mobile phones are as follows:

1. Impaired eyesight.

Playing with mobile phones for a long time can cause the eyes to be in a state of excessive fatigue, which can easily cause visual impairment and lead to vision loss. When playing with a mobile phone, improper posture, such as lying down and playing with the mobile phone, can also affect vision and produce adverse consequences such as myopia.

2. Cause cervical spondylosis.

The vast majority of people are in a state of bowing their heads when playing with their mobile phones, which is easy to cause degeneration and hyperplasia of the cervical spine, resulting in an increase in the probability of cervical spondylosis.

3. The little finger is deformed.

If you use your phone in one position for a long time, your finger joints may be uncomfortable, stiff, and painful, and the muscles and fascia near your joints may become inflamed. If left unchecked, inflammation can recur and may cause deformation of the little knuckle. <>

The reasons why the mobile phone has no signal are: network problems or network inaccessibility, and problems with the mobile phone itself.

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.

There may be problems with the mobile phone's receiving orange wide spike device and SIM card slot. You need to go to the repair point to have a look.

Of course, the factor of SIM card corruption cannot be ruled out.

Ways to tell if your phone has no signal:

1. Check whether the mobile phone card slot or SIM card is damaged.

You can insert other mobile phone cards to try, and then put the SIM card of the mobile phone itself on other mobile phones to see if there is a signal, if the card slot is damaged, it is recommended to replace the card Qiaoqiao slot, if the SIM card is damaged, please go to the business hall to replace the SIM card.

2. There is no signal on the mobile phone caused by network delay.

You can turn on your phone's airplane mode and turn it off after five seconds, or restart your phone.

3. If the signal in the place is not good, the signal cannot be found, so you can search in another place.

4. The receiver of the mobile phone is damaged.

If there is still no signal despite the above reasons, and you suspect that the mobile phone receiver is broken, please go to the after-sales location of the mobile phone for testing and repair.

5. When there is no signal when the mobile phone and SIM card are not damaged, it may be a problem with the mobile base station or the mobile phone system. <>