What s going on with the Apple 4 suddenly no signal?

There are many reasons for Apple4sNo signal,It also depends on whether you can't turn on the traffic without signal or can't call**,What's going on, please check and rule out one by one to solve it。

Reason: 1. The airplane mode is turned on.

2. The power-saving mode is turned on.

4. The mobile phone card chip is damaged or the SIM card slot placed in Apple 4S is damaged or the card is inserted incorrectly.

5. Apple 4S system version problem.

Solution: 1. Turn off the airplane mode ice and restart the phone to see if there is a signal.

2. Turn off the power-saving mode and try it.

3. Change the area to see if it has improved.

4. Change the mobile phone to try whether the mobile phone card can have a signal, change the card and put it into the Apple 4S to see the situation, if it still doesn't work, go to the after-sales service.

5. Upgrade to a new version or downgrade.

If the above methods still can't solve the problem, then please back up the flash or communicate with the after-sales service.

1. SIM card change on other iPhone devices to try whether it can be used normally, if so, then rule out the phone problem.

2. Go to Settings, General, Network, Reset Network Settings.

3. Check whether the local network is normal, whether the operator's base station is damaged or the signal is weak! The signal of Apple's mobile phone is significantly weaker than that of other brands.

Mine is 4s, it's the same problem, often no service, no signal, worrying, I manually changed the service provider to mobile, or so, there is no way at present. Let's make do with it.

It's not a bad thing to call, it's that the machine itself is not too hard.

The reasons for the lack of signal in Apple 14 include poor surrounding network, network setting problems, SIM card problems, system software problems, and mobile phone hardware problems.

1. The surrounding network is poor.

The network of the surrounding environment is relatively poor, which will lead to the signal being in a state of no service, which will lead to no signal and no service on the Apple mobile phone, and changing a place with a good network can solve the problem.

2. Network setting problems.

After the iPhone has been used for a long time, the phone will suddenly have no signal and cannot connect to the network due to some reasons of the system itself, you can solve the problem of no service by restoring the network settings and restoring to the default factory settings, or by restarting the phone.

3. SIM card problem.

A problem with the SIM card of the mobile phone will also cause the mobile phone to be unable to connect to the network. You can take out the SIM card, check whether it is damaged or worn, or find another SIM card to insert into the Apple mobile phone to try to solve the problem, and if it still can't be solved, you can deny the reason why the upgrade is a SIM card.

4. System software problems.

Due to some vulnerabilities in the iOS system of Apple mobile phones, these vulnerabilities sometimes cause the mobile phone to be unable to search the network and display no service status, you can update your mobile phone's system to the latest version to solve this problem.

5. Mobile phone hardware problems.

If the above methods can't solve this problem, there is a high probability that there is a problem with the hardware of the mobile phone, and you need to go to Apple's after-sales service to request processing.

How to receive a weak signal on iphone14:

1. First check whether the customer service of the mobile phone terminal promises the manufacturer's customer service to inquire whether the mobile phone supports Unicom 4G or 5G network signal (you can call the customer service operator of the mobile phone manufacturer to inquire).

2. Check with other Unicom users around you to ask if the same situation occurs.

3. Call the customer service of the local operator to inquire whether there is a network signal problem in the local area.

4. Call the customer service of the operator where the number belongs to inquire about the status of the network signal function of the number. <>

Operating phone: iphone14

Operating system: The steps to solve the sudden no signal on Apple 14 are as follows:

1. Open Settings on your phone, and in the settings interface, tap to enter the cellular network.

2. Then on the cellular interface, click on the Cellular Data option.

3. Then scroll down to the bottom of the screen and turn on the wireless LAN assistant blind function, so that you can use cellular data when there is no signal.

How to maintain your iPhone:

1. The battery of the Apple mobile phone cannot be replaced, so we should use it well, and it is recommended that you shut down the battery for at least eight hours a day, which can greatly save the use of the mobile phone battery and extend the service life of the Apple mobile phone.

2. The shell of the Apple mobile phone is very bright, we should also pay attention to this point when maintaining the sail, we should often wipe the shell of the mobile phone with a cotton cloth, and use a cotton cloth soaked in water in the rental hall, the correct way is to use a cotton cloth with a little liquor, and the wiping effect is very good.

3. When buying an Apple mobile phone, it is not expensive, so we don't want to save any money when using it, we must buy a good electrostatic film to protect your Apple mobile phone, don't save money, buy a few dollars of adhesive film.

4. When you actually use the Apple mobile phone, you should also buy a better mobile phone case, so that you can wrap the mobile phone well, mainly to prevent your mobile phone from being scratched and grinded, and it is better to use a transparent silicone sleeve. <>

<>2. It is recommended to go to the standby desktop - click "Applications" - Settings - Connect - More Networks - Mobile Network - Network Operator - Search Network - Select the network operator supported by the SIM card to see if Lu Shen recovers;

3. It is recommended to use an eraser to wipe the SIM card chip of the mobile phone card to see if it is restored, and rule out the failure to use the SIM card normally caused by poor contact;

4. You can use the naked eye to check whether the groove is deformed, and exclude the inability to use the slide code normally caused by the deformation of the card slot of the mobile phone terminal;

5. If none of the above operations have been resumed, and other SIM cards can be used normally in the user's mobile phone, it is recommended that the user can go directly to the nearest business hall to replace a SIM card.

6. If the SIM card holder of the mobile phone is damaged or the IMEI code of the fuselage is not displayed in the command "*", it is recommended to send it to the terminal after-sales maintenance center for repair.

The U.S. Consumer Guide magazine confirmed that when the user touches the antenna on the side of the iPhone 4, the signal weakens, although the magazine pointed out that consumers can apply tape or buy a protective case above the antenna to solve the problem of poor reception. The magazine also questioned Apple's claim that the iPhone 4 signal strength problem was caused by a miscalculation of the number of bars displayed on the phone. The magazine said, "We wouldn't recommend the iPhone 4 because of this issue."

The antenna of iPhone4 changed the defects exposed by the antenna of the mobile phone, and designed the antenna of iPhone4 around the antenna, resulting in a small hole in the seam of the "metal decorative strip" antenna around the iPhone, so that many men who like iPhone are forced to use the posture of "orchid finger" when playing, and because of the influence of the shell, they cannot receive such a clear signal.

Solution: The official solution is to give every iPhone 4 user a case that helps the signal stabilize, and if they are still not satisfied, they can get a full refund within 30 days.

It's a shell or a shell that you're on.

Apple4The signal problem is indeed very big,For this problem, Apple has been greatly improved in the subsequent 4S,As for how to solve the signal problem of 4,You may need some other external devices,For example, a signal booster installed at home,etc。