Why does my iPhone have a signal and no service for a while? The cycle has always been like this?

Apple mobile phone is now a lot of friends will choose one, although the speed of the Apple mobile phone is very fast, but in terms of signal, many times it is still relatively poor, especially in more closed or more places, the signal will be more unstable, and the signal difference is not only a communication card problem, in fact, the mobile phone will also have a certain reason for the poor signal.

So how to solve the poor signal of Apple's mobile phone? Now let's talk about the detailed solution.

Method 1: Restart the signal.

Sometimes the poor signal of the Apple mobile phone is caused by the mobile phone running for too long, so at this time we can solve it by turning the signal back on, and directly enter the settings interface to find the airplane mode.

And turn it on, and turn it on again after three seconds to restart the network and signal.

Method 2: Turn off WiFi and Bluetooth.

Sometimes Wi-Fi.

Or Bluetooth will also cause the mobile phone signal to become weaker or even worse, so at this time we can go to the settings interface to turn off the switch of the wireless data network, and then turn off the Bluetooth to reduce the load pressure of the mobile phone antenna and make the mobile phone signal stronger.

Method 3: Restore network settings.

If the above two methods are not effective, then we can directly restore the network settings, first enter the settings interface, then click "General" and select "Restore", then click "Reset Network Settings" and enter the password to successfully restore the default network.

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.

This problem always occurs with 3G cards? Is it a standard small card or your own big card cut into a small card, if it is not a standard to recommend going to the business hall to change a standard small card, no money, do not change the number, if it is a mobile phone problem, it is recommended to report for repair to see, I have such a problem with the iphone here, just change the card.

Is it a 4G card? Yes, it's normal, the 4G signal is unstable.

Mobile phone communication is to send and receive signals through the network base station, and then communicate with the called party, such as the mobile phone shows no service may be related to the following conditions:

1. The SIM card of the mobile phone is in poor contact with the shneme of the mobile phone card slot, resulting in the failure of the SIM card circuit and the inability of the mobile phone to communicate with the network base station.

2. The mobile phone is incompatible with the system due to the application software for installation, resulting in the system software closing the modem in the mobile phone signal processing circuit, at this time you can turn off the mobile phone and then restart, the modem in the mobile phone signal circuit will be restarted, and after the signal is normal, delete the suspicious mobile phone application software installed before the problem.

3. The SIM card of the mobile phone is not registered in the network, at this time, you can insert this SIM card into another mobile phone, if it also shows no service as the reason for the SIM card.

4. If the SIM card of the mobile phone is accidental, and there is no signal in the network signal coverage area, it fails to reconnect to search the network and merge the book, at this time, you can manually search for network registration under the menu of Settings - General - Network - Network Operator.

5. If the signal coverage of the mobile phone SIM card network operator is not available, you can change the location to an open area, and then check the mobile phone signal grid display, if the display is normal after changing the location, you can call the network operator service ** for feedback and complaints.

6. **The card has been used for too long, and with a valid certificate, you can go to the local business hall to reapply for a card.

Why does my iPhone have a signal and no service for a while? The cycle has always been like this?

Dear, hello, I'm glad to answer for you: why does my apple phone have a signal and no service. The cycle has always been like this?

Answer: This is a common problem of Apple's mobile phone, which is due to a defect in the design at that time, the design belongs to the Internet terminal, ignoring the design of the antenna, and the support signal for the mobile card is slightly weak, and there is sometimes no signal phenomenon on the hand locust surface in the urban area. Unicom signal is slightly better than mobile.

1. Turn off the phone, take out the SIM card and try again. 2. Check whether the business network of the surrounding mobile phones is normal, and judge that it is a network failure. 3. Restart the phone to try, if it doesn't work, reset the network settings to see if there is a system problem.

4. Change the SIM card to see if it is a card problem. If there is a problem with the card, it is recommended to go to the mobile service center to replace the SIM card. 5. Enter the hardware test, click "SIM card test" on the hardware test interface, and see if the SIM card status is normal.

6. If there is a problem with the mobile phone, it is recommended that Bi Shuyou go to the after-sales outlets for testing.

Reason 1: Problems with SIM cards.

Reason 2: Hardware problems with your phone.

Reason 3: Entering a no-service area or a place where there is no signal than Zhuan.

Here's how to fix it:

1. Take out the SIM card, erase it with an eraser, put it back and try again.

2. Change your SIM card with someone else's, and see if your mobile phone and other people's mobile phones have a signal after changing.

3. Call the operator who has received the card and ask the customer service to refresh the background of the SIM card.

4. If none of the above can be solved, it is recommended to take it to a mobile phone repair station for inspection.

The signal of the iPhone is unstable, follow the steps below to set it up:

1. Go to 'Settings'--**'-Turn off 'Dial-up Assistance'

2. Turn off the phone and pull out the SIM card.

3. Turn on the phone again and insert the SIM card.

4. Go to 'Settings' -- 'Operator' -- Turn off 'Automatic' -- select the corresponding mobile phone operator.

It may be that there are other shielding sources nearby, and my Unicom card is the same when something happens at school, but this is not the case with mobile telecommunications. In addition, it may be a problem with the hardware of the mobile phone, that is, there is a problem with the transmission and reception of the signal band!

Here's how to fix it:

Open [Settings] on your phone, then turn on the button to the right of the [Airplane mode] option, wait a few seconds and then turn it off.

First, click the [General] option in the [Settings] of the mobile phone, and then on the page that opens, click the [Reset Network Settings] option, and then enter the mobile phone password to restore the network.

If you still see no service after resetting your network settings, you can try turning off your phone and then restarting it.

If the mobile phone cannot be connected to the network, it may also be a problem with the SIM card of the mobile phone. You can remove the SIM card to check for damage or wear, or try to find another SIM card to insert.

Open your phone's [Settings] - General - Software Update to update, or connect your computer to iTunes.

Go to the repair shop and find after-sales service to solve the problem.

Handling 5G is one step faster, the traffic is half cheaper than 4G, the broadband speed is 500M, and it is convenient and fast to log in to the online business hall of Guangxi Telecom to handle broadband, number card, traffic package, etc. with one click. Customer service number 15 will answer for you.

1.Damage to the SIM card leads to no service due to inability to read the SIM card, 2The hardware failure of the mobile phone leads to the inability to read the SIM card resulting in no service, 3

Software conflict resulting in inability to read the SIM card resulting in no service, 4There is no signal coverage in the area, resulting in no service. 18th Floor, Tower T2, CapitaMall, Xihuan Plaza, Xicheng District (Beijing Apple Customer Service Center 010 5363 0616).

5.It is recommended to bring the device to a regular after-sales center for repair, so as to avoid problems such as damage to the motherboard caused by damage to the mobile phone card slot.

This may be the reason for the poor signal in your area, so it will show a very unstable network signal.

The following points can be suggested for poor mobile phone signal:

1. Do not recognize the SIM card used by the mobile phone, or check whether the card slot is loose, deformed and other poor contact, if the mobile phone is not restarted, if the battery can be removed, it is best to remove the battery and restart.

2. Remove the SIM card and put it on another mobile phone to test whether the SIM card is faulty. Because sometimes it may be that the chip of the SIM card has been damaged, if the SIM is broken, you can go to the operator to replace a new SIM card.

3. If the mobile phone is not the national version, the American version of the mobile phone needs to add a card sticker if the signal is weak in China, you can buy a card sticker, and the card cutting process may also lead to such a problem, if it is a normal machine, it is recommended to go to the business hall to handle it.

iPhone4 often has to show the general reasons for no service and how to deal with it:

1. Check whether the mobile phone card slot is damaged: you can insert other mobile phone cards to try, if the card slot is damaged, it is recommended to replace the card slot.

2. Check whether the SIM card of the mobile phone is damaged: put the SIM card of the mobile phone itself on other mobile phones to see if there is a signal, if the SIM card is damaged, please go to the business hall to replace the SIM card.

3. Check whether there is a card or the card is damaged: some locked mobile phones need to cooperate with the card to search for signals, please install the card to use, if the card has been damaged or the phone has been upgraded, replace the card.

1.If the card is cut improperly, it is best to use a special small card.

2.The system is not up to date.

3.The signal is not good.

4. This can also happen occasionally after a jailbreak.

Is it a card sticker? If you don't use the card, it should be a hardware problem with the phone, and it is recommended to send it to insurance.