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device, either by you or our courier. - 2 We make repairs and also give a guarantee for new installed parts. On average, repairs last 20-30 minutes.
- 3 Get a working device yourself or call our courier.
When you encounter this problem, you first need to find out the reasons that lead to such a malfunction. Experts highlight the following most common problems with the iPhone 4s:
- system failure;
- settings are incorrect;
- malfunction in the transmitter amplifier;
- problem caused by mechanical damage;
- failure of the antenna itself;
What to do if the network is lost on the iPhone?
First of all, when you saw that the network was gone on the iPhone 4, restart the device. Often the problem of a lack of communication occurs due to a failure in the settings or operating system. You can restart your smartphone in two ways: normal and hard.
After restarting your iPhone 5, the first thing to check is the settings. If the device still does not find mobile communication, which means that the problem could have occurred in the connection part. That is, in the phone settings, the data of one operator can be entered, and the SIM card costs another. In this case, go to the item "Search for a network", where set the value to "Automatic". This will allow the phone to determine desired parameters. After that, for the settings to take effect, the device must be rebooted again.
IPhone network disappears - hardware problems
If the connection in the iPhone 4s constantly disappears, then most likely the problem lies in the hardware. Remember if the phone fell Lately, did not get wet. If it did fall, then it could fail:
- antenna;
- printed circuit board;
- loops connecting individual blocks;
- SIM card reader;
Recall that it is the antenna that is responsible for receiving and transmitting the signal. Therefore, when the network on the iPhone 5s disappeared or you noticed signal drops, or a short-term loss of connection, then, most likely, this particular transmitter is unstable. To restore his normal condition, you need to contact our center after-sales service for a replacement part.
When you turn off 3g on iPhone, the network disappears
Our specialists will comprehensively examine the iPhone 4s for damage, as well as check the serviceability of its individual parts.
It is worth noting that often the SIM card itself is to blame for the lack of communication. If it's worn on it pad, then not every gadget will be able to read the data and recognize the SIM card. In this case, you should contact your branch office for a replacement. mobile operator.
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Repair in 35 minutes!
But if, nevertheless, the problem is related to a hardware failure in the iPhone 5c, then it is better not to try to return the functionality to the device yourself. As soon as you notice incorrect work device - take it to our service center for Apple devices. Our qualified staff will diagnose and accurately identify the problem. Thanks to modern equipment, our specialists will be able to restore the working capacity of the iPhone 5c in the shortest possible time.
The owner of the iPhone, who has stopped catching the network, receives a lot of accompanying inconveniences. Relatives and friends will not be able to get through to him, and calling a taxi or some other service will turn into real problem. There are many situations in which an iPhone can stop catching the network. The good news is that many of them are fairly easy to solve. Let's figure out what to do if there is no network on the iPhone.
Main reasons
As stated above, iPhone any versions (4, 5, 6, 7, X) for many reasons may display a message - there is no network. For example, if the phone has wrong time he may not catch the net.
Some users forget turn off flight mode, at which the network search is turned off on the iPhone. This is convenient when you are flying, but in everyday life this mode is unnecessary.
Each mobile operator has its own certain settings. Usually they are set automatically when you install a SIM card. But they can go astray or change. So it's worth checking them out too. In addition to the operator settings, it happens that there is no signal due to lack of coverage in certain places.
With such a problem, errors in the phone system cannot be ruled out. It may be different glitches or bugs firmware. Or worse, a physical malfunction.
Wrong time
If you want to fix the problem of no network yourself, the first step is to check the date and time settings:
If your phone is connected to the Internet Wi-Fi, then setting the date and time can be simplified. To do this, in the parameters "Date and time" enable the slider " Automatically” and the phone will automatically set the time according to the time zone. 
Airplane mode enabled
The next thing to check after setting the correct date and time is Airplane mode. When airplane mode is on, the iPhone will not see the network. To check this you need:
If the slider was initially off, you can try turning it on for a few minutes, then turning it off again. It happens that similar way helps to get rid of the lack of a network.
Incorrect operator settings
If the above manipulations did not help, then it is worth checking the settings of the mobile operator:
Clarify correct values You can contact your mobile operator by calling technical support from another working device.
Weak signal
The reason for the lack of a network may be that a particular location out of coverage area. At present, this is very unlikely. Cell towers are installed almost everywhere.
Also, the iPhone may not catch the network in basements, subways or buildings, because the walls greatly jam the signal from the towers.
In these cases, the connection may not be stable and the iPhone will lose network
Updates not installed
In order for the iPhone to work stably and without glitches, it must always have latest updates installed. To check for updates, go to Settings - General - Software Updates. The phone will search possible updates. If they are, you need to install them, this can help solve the problem of no network. 
System failure
The iOS system is famous for its stability and ease of use, but various glitches happen with it. One of these may be a bug when the iPhone stops picking up cellular communication. Such a problem is quite difficult to identify and solve on your own. To get started, follow all the tips that are listed above.
Physical breakdowns
This includes phone breakdowns, antenna damage, modem damage, eternal search network, damage to the SIM card and all other physical damage.
If there is a suspicion of a physical malfunction of the iPhone, then first you should check sim card. To do this, you need to remove it, and then inspect the contacts of the SIM card, and if there is dirt on them, clean them. You can do this with a regular eraser. The easiest way is to check the SIM card on another device to exclude the possibility of its breakdown.
The message "No network" on the iPhone can also be a consequence antenna damage in the phone, which is responsible for receiving the signal, or damage to the communication module. iPhone will always be in network search mode. Here you should contact a certified service center.
In addition, do not be surprised if the iPhone does not catch the network after a fall or repair. In the second case, it is better to contact the official service centers for repairs. Unauthorized service centers are not always able to correctly repair the gadget.
No network after unlock
If the iPhone does not catch the network after removalSim-lock, you can use one method that quite often helps to solve the problem. You need to go to the "Reset" tab in the settings and select "Reset network settings" there. 
You can also restore iPhone from using iTunes, this method of recovery will lead to deleting all information in the device's memory.
This method is very effective in solving similar problem. The following instructions should be followed:
- Need to insert non-AT/T Sim card into iPhone and connect to PC with iTunes via USB cable.
- As soon as the program has identified the phone, you should make a backup and then just click the " Reestablish»
- It's best not to use Shift/Option on the first restore.
- Once the restore is complete, two buttons will appear in iTunes.
- The next step is to " Restore from backup».
- Select item " exploitiPhone like new»
- Next comes the activation. You need to use a non-AT/T SIM card and wait for the required signal.
iPhone is locked
Some iPhones are flashed directly under one operator, and you won’t be able to use a SIM card from another operator on it. You can check this by inserting a SIM card from another operator and seeing if the connection appears.
Reset to factory settings
The last step before contacting a service center is a factory reset. If there is a backup in iCloud user will not lose personal data. To reset to factory settings, connect to Wi-Fi, go to the "Collection" tab and select " Reset content and settings". After that, the reset procedure will begin, and after its completion, you will need to go through initial setup smartphone. 
To be “on hand” with an iPhone that does not catch the network, on any trip or on a business trip, is not a pleasant situation. The boss will be annoyed that his employee is not available and did not submit a timely report, relatives will be exhausted from anxiety, potential clients off the hook. Even calling for help or a taxi if something happens to the car will be impossible. It should be recognized that modern man is heavily dependent on the GSM signal.
Fortunately, in most situations, you can solve the problem of a weak network on your iPhone yourself and quite quickly. In the article we will talk about the common reasons why the "apple" gadget does not catch the network well, and about ways to correct the situation.
First what you need to check on an iPhone that does not catch a GSM signal - date/time settings. If the settings are incorrect, you should set the correct manually. It is done like this:
Step 1. Follow the path" Settings» — « Main» — « date and time».
Step 2. find out exact time in your time zone. To do this, you can use, for example, the Yandex. Time" .
Step 3. Scrolling the reels, set the correct date, hour and minute.
Step 4. Restart your iPhone and check the network.
If you have Wi-Fi access, you can avoid manual setting time. In the subsection "Date and time" there is a slider "Automatically". After activating it, the iPhone independently determines the time in the set time zone - but only if the gadget is connected to the Internet.
Your obedient servant prefers not to use automatic tuning time, because his iPhone “counts” an hour more than it should.
Problems with cellular operator settings
If the time is set correctly, but the iPhone still does not catch the network, you can suspect that the settings of the mobile operator have gone astray. A set of such measures will help to solve this problem (each subsequent step must be performed only if the previous one did not work):
Step 1. Turn airplane mode on and off. The corresponding slider is located at the very beginning of the menu " Settings».
Step 2. IN " Settings» go to the section « Operator"and deactivate the toggle switch" Automatically».
Step 3. Check if the cellular data settings (APN, username, password) are entered correctly. Follow the path" Settings» — « cellular » — « Cellular network data transmission". In the block " Cellular Data” and the necessary details are present.
You will find the correct parameters for the top 3 operators in our article on how to set up the Internet on an iPhone. In case of discrepancy, change the cellular data settings on the "apple" gadget manually. Don't forget to restart your device after changing the settings.
Weak GSM signal
If the reason weak signal is that the user's location is not included in the GSM coverage area, you cannot fix the problem yourself. You will have to buy a SIM card for temporary use. Although in fact the territory where absolutely There is no GSM signal, you still need to look.
There are also areas where the signal is very poor in large cities. As a rule, iPhones are not caught in the subway, basements, elevators. The network may disappear inside the building due to the fact that the concrete walls of the room jam the GSM signal. In some buildings, jammers are deliberately used to prevent employees from excessively surfing the Internet. The "jammers" look something like this:
Previously, jammers were willingly placed in educational institutions. Now the use of such devices is minimized - modern studying proccess involves the active use of the student to the mobile Internet.
If GSM signal weakened in the user's home, this is a reason to file a claim with the communication provider. The owner of the iPhone needs to call the number hotline and complain about the lack of network. The application will be transferred to the technical department, whose employees will make every effort to solve the problem.
SIM card is damaged
Mechanical damage to the SIM card or incorrect cutting can not become the reasons why there is no network on the iPhone. If the card is faulty, the SIM gadget will not be recognized at all. It's a completely different problem possible solutions which we offered in the article " Why does the iPhone not see the SIM card".
However, a user suffering from a lack of network on a smartphone should still spend visual inspection SIM cards. If there is dirt on the contacts, you need to carefully remove it. Even the fact that the user removed the SIM card and installed it back into the slot can help to return a normal GSM signal.
If iPhone owner there are suspicions that the gadget does not catch the network well because of the SIM card, it should contact the service office with a passport and replace the SIM. This procedure is free and takes only a couple of minutes.
iOS crash
The failure of the above measures tells the user that the problem may lie in the software. For correct operation gadget requires the latest system updates. To check if there are updates available, the user needs to follow the path " Settings» — « Main» — « Software Update».
Your gadget is broken
In the presence of physical breakdown iPhone visit to the masters can not be avoided. The failure of the gadget to catch the network, as a rule, leads to a malfunction of the antenna module. Antenna failure is the result of a gadget being dropped or flooded. Repair cost in this case will depend on iPhone models. Estimated prices will be collected in a table:
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Repair price |
iPhone does not catch the network after unlock: what to do?
Network problems may appear after the user has unlocked the Sim-Lock device using one of the following programs: redsnOw, ultrasnOw, SAM Tool, SAMPrefs. The following steps will help resolve the issue:
Step 1. Reset your network settings. To do this, you need to follow the path " Settings» — « Main» — « Reset", click on the item" Reset network settings' and enter the password.
This measure will not lead to the deletion of personal data.
Step 2. Restore iPhone via iTunes and set it up as new. The probability that this measure will help - 90%. Remember that restoring clears the device's memory. Before proceeding with the recovery procedure, do backup data.
If the gadget is locked under AT&T, it will not work with Russian SIM cards, no matter how much effort the user makes. The unfortunate owner of such a smartphone is better off seeking an official unlock.
Conclusion
If there is no network on the iPhone, you should not rush to the masters for repairs. Specialists service centers are interested in finding a malfunction in the gadget - and they are likely to find it by "blowing a molehill out of a molehill". Before giving the phone for repair, the user should take a number of simple measures - check the time, network settings, restart the gadget, update iOS. The chance that one of these measures will work is very high.
Often iPhone users I have to face a problem: the gadget does not find the operator's signal. Cellular communication is the main function of the phone, so it is important to understand what is the cause of the breakdown. If you are confident in the operation of the SIM-card and your telecom operator, then you need to check the performance of the device itself.
What to do if the iPhone does not catch the network well? Let's consider several ways to solve this issue.
The first thing we do is reboot the device. Power Users PCs know that when they freeze, rebooting is the first step to getting things back on track. It is worth noting that sometimes the signal disappears due to the inclusion of 3G. Most likely, the problem arose in latest update iOS.
If the restart did not help, perform the following methods one by one.
Setting the time zone
As a rule, the cause of the malfunction is incorrect set date and time. Do next steps for proper setup:
- Connect iPhone to active network WiFi.
- Open the phone settings, then in the "Basic" menu, go to the "Date and time" item.
- Activate the "Automatic" line. If the function is already activated, turn it off and on again.
- Wait about a minute, then reboot your device.
It happens that the operator is not able to perform his work efficiently due to the remoteness of the area. We select the line "Airplane mode" in the menu and turn it on for 5-10 seconds. After disabling this mode, a network search will occur.
Installing system updates
For the correct operation of the device, it needs updates software. Perhaps the iPhone does not see the network, because these updates came to it, but you did not install them.
Connect to the Internet, go to the "Main" settings menu again, then the line "Software Update". If you can't connect to the internet from your phone, you can follow this step through your computer while connected to iTunes.
Network search after factory unlock
When restoring, updating, activating a smartphone, a similar problem occurs. The way to fix it is very simple: you need to reset the network settings. The fact is that your phone sees the SIM card itself, but regular network can’t catch, so in the main parameters we find the line “Reset” and then “Reset network settings”. If the harmless option did not bring desired result, do the following:
- We connect the smartphone to the computer and open iTunes.
- Doing backup files and click on System Restore.
- After completing the restore procedure, you will be prompted to either restore the copy of the iPhone you made or use it as a new device. You must select the second option.
- After the whole process, the phone will start searching for the network.
If the problem appeared when using the SAMPrefs or RedsnOw programs, we recommend that you contact a specialist, since independent decision does not guarantee a 100% positive result.
Hardware reasons
Mechanical damage can also cause the device to malfunction. A strong impact, a fall or moisture ingress - all this leads to a malfunction. Testing in a repair shop will help you find out.
Cause in the coverage area
iPhone is a popular product, it is not surprising that counterfeits and marriage are common. It is also possible that your phone was brought into Russia unofficially and works strictly with a certain telecom operator.
As you can see, there are various circumstances that affect the performance of your iPhone. If the iPhone does not catch the network well, it is quite easy to solve the problem yourself. If the above methods did not help, seek the advice of a specialist.
