No signal or no connectivity is a big problem for cell phones. Users want to be able to use the most basic function of a cell phone – making calls – when they want to. While some areas have connectivity problems, which we can hardly do, some phones do not show any signal even if the network is available. This is a problem with the phone and we cannot blame the network in this case.
Some of our readers, especially Samsung users, have often complained about not having signal problems on their phones. They try to make a call and discover that there is no signal at all or they get a pop-up box that says Not registered on the network. These problems can be resolved when they are very rare and do not last long, but if it happens very frequently, it can become extremely annoying for users.
Although this is one of the most common errors, you may notice that you have no Android signal, other errors include Error while searching on the network, Your SIM card does not allow connection to this network and Automatic network search. or "emergency calls only"
Also Read: How To Disable Apple Music Auto-Renewal On Android
Identify the Maker problem – The SIM card or the Android device
Before starting to solve the problem on your phone, it is advisable to check if the SIM card works correctly on another device. You can use a friend's phone or any other smartphone or tablet in the family. This will help you determine if the problem is in the network or on the phone. If the SIM card behaves correctly and you can make and receive calls and send messages without problems from another device, the problem resides in the device you are using. Otherwise, you can contact the SIM provider if the SIM card does not work on another phone.
This is a crucial step to help you understand whether the problem is with the phone or not. Once we start troubleshooting the phone, there is no point in identifying the network as a problem after many steps. Once the phone is identified as the problem maker, the problem can be either in the phone software or in the hardware. However, here are the possible solutions to solve this problem.
Solutions for no signal problems on Samsung Galaxy S, Galaxy Note, LG G, Nexus and other Android devices
Solution 1: Restart your device
The best and most useful solution for this problem is to restart the device. Once you restart the device, it refreshes the system and the device searches for the network again. It is generally helpful, but the problem can only be resolved temporarily and may recur later. For people who do not experience this problem very often, a restart can be a quick and easy solution.
Solution 2: switch to airplane mode
Many readers have found this solution useful and provide a quick fix. To switch between Airplane mode, drop down the notifications shade on your phone and look for the Airplane mode icon. Tap the icon to activate the mode. Wait 30 seconds and press the icon again to deactivate the mode.
Once your phone exits airplane mode, it will try to search for networks again.
Solution 3: Check the SIM card
Sometimes, when the SIM card is not inserted correctly, you may find a non-signal problem or an error appearing on your screen. To resolve this problem, turn off your phone and remove the SIM card. Now reinsert the card and make sure it is inserted correctly. If you feel that the SIM card is moving in the metal support, it is possible that the movement causes the loss of the connection and that you have no signal problems.
If you find that the SIM card moves around a lot, bring the phone to the manufacturer to check if something can be done and if the phone is under warranty, if a replacement can be arranged. You can also try using a piece of paper on top of the SIM card to keep it firmly in place.
Solution 4: choose the mobile network automatically
All brushes are made from the highest quality synthetic bristles. Android devices can easily try this solution. The mobile network will be automatically chosen by the device and should help you solve the problem. To choose the mobile network automatically, proceed as follows:
- Access the Settings menu on your device
- Search for more networks and tap on it
- Now tap on the mobile networks on the next screen
- Tap Network Operators and choose Automatically select from the next screen
The device will start searching for networks automatically and will try to connect to the network once it has identified one. This should help you solve the problem.
Solution 5: correctly broadcast the radio signal
Sometimes the phone may have a problem with no signal or no service when the radio signal is not broadcast as expected. To resolve this problem, do the following:
- Open your phone numberer and type * # * # 4636 # * # *. Dial this number and wait for the results.
- You will get a test menu on your device screen. Click on the phone / device information in this menu.
- Run the ping test, then select GSM Auto (PRL) from the drop-down list.
- Tap turn off radio
When this step is complete, restart your phone and check if you are now able to connect to the network and use the phone to make calls and send messages.
Solution 6: Update the phone software
Your phone or tablet software must be updated quickly for your device to function properly. When your device is updated, the new software brings many fixes for known bugs or problems in the current software. To update the software on your device, do the following:
- Go to the Settings menu of your device
- Scroll down and search for About Device or About Phone, About Tablet. Tap on it.
- Tap Check for updates and, if updates are available, download and install the updates.
Once your phone software is updated, your phone will restart automatically and after restarting, it will try to connect to the available network. Once the network is connected, check if the problem is solved.
Solution 7: IMEI Null
There are times when the device's IMEI number may have been canceled or there may be an IMEI number problem which may lead to a signal with no or no service problems. You should check if your IMEI number has been canceled or corrupted. And if the problem lies in the IMEI number, it is imperative to restore the null IMEI.
- Enter your phone's dialer and enter * # 06 #, which will display your device's IMEI number. If the result indicates Null, the IMEI number of your device has been damaged and you must take the necessary measures to resolve this problem.
- To resolve the problem, dial * # * # 197328640 # * # * from the number on your device. Alternatively, you can also dial * # 197328640 #. By dialing this number, you will enter command mode on your phone.
- Make sure you select Common on your device.
- Now choose the first option which must be the field test mode (FTM). If you find that FTM is enabled, disable it. Once you have dyed FTM, press the Menu button and your IMEI number should be restored.
- To deactivate FTM, you must press option 2 using the key.
- Remove the battery from your device (if you have a removable battery) and also remove the SIM card from your device.
- Wait two minutes and reinsert the battery, but do not replace the SIM card.
- Turn on the device and, from the dialer, enter the number * # 197328640 # again.
- Access the Debug screen menu and press Phone Control.
- Then you need to press Nas Control, then press RRC. The last step is to tap on RRC Revision and tap on Released.
- After completing these steps, turn off your phone and reinsert the SIM card.
Turn on your phone and check if the problem has been resolved.
Solution 8: reset to factory settings
If none of the above solutions worked, reset your phone to the factory settings. When you reset a device to the factory settings, you return the software to the state it was in when the phone was removed from the box. This step deletes all the data from your phone and also deletes all the applications that have been downloaded to the phone. You must therefore create a backup of all data before resetting the device to the factory settings.
Android devices have a backup option from the Settings menu and if you want to create a backup using this option, you can do so.
- Go to the Settings menu of your device
- Press save and reset
- You can check or uncheck the option to create a backup from this screen.
- Towards the bottom of the screen, you have the Factory Reset button. Press to reset the phone to the factory settings.
Once the phone is reset to the factory settings, it will restart automatically. Allow your phone to connect to the network, and then check whether the problem has been resolved or not.
What to do when I get "error while searching for a network"?
Some of our readers have asked for a solution to this error that appears on their screen when the phone has no signal. Since we cover all problems without signal, let us check how to solve this problem. The solution is unique to this problem and it seems to have worked for most Android phones.
- Access the Settings menu on your device
- Now find the mobile network settings and tap on it
- Stay on the same screen, press and hold the power key and the Home key on your device until the phone turns off.
- Remove from the battery of your device if it is removable
- Now press and release the home button and the power button together. Do this 10 times.
- After that, press and hold the Power and Home keys for at least one minute. By doing this, you will be able to drain any static charge present in the phone circuits.
- Now reinsert the battery after all the charges have been drained and turn on your device.
- Do not put the cover on the back of the appliance
- If the design of your phone allows it, you must delete and re-enter times 3 from the SIM card while the device is switched on. If you have two SIM card slots, use the one from where you can remove the SIM card without moving the battery
- You will be asked to restart the device
After restarting the device, let it connect to the network and check if it works as expected. Try to make calls and send messages to make sure the problem has been resolved.
What if I use a custom ROM and get this error?
The error of absence of signal was noted on certain devices endowed with a personalized ROM memory. In such a case, it is advisable to return the original ROM and check if the problem is solved. Then you will know that the ROM is not suitable for your device. The original ROM can be installed using the recovery screen. The process will delete all data and delete the apps from your device. So be sure to create a backup of all important data that you don't want to lose.
You can find the ROM you need by using the help of your device model number which can be found in the About device section in the Settings menu. Once you have the model number, download the ROM stored for the device making sure you choose the correct ROM. The ROM will be in the form of a .zip file. Make sure not to extract the file. Also, download the GApps for the ROM you are downloading. You can save them to your internal storage or to the SD card. After downloading the ROM and GApps, turn off your device.
Now hold down the Power and Volume Down buttons until you see the recovery options on your screen. You will see a lot of options, and you have to choose the first one which is Install. Choose from the following prompts that ask you to locate the file on your device. Once the file is located, choose the option at the bottom of the screen to confirm Flash. The stock ROM will be flashed on your device. Once the process is complete, you need to clear the cache and choose to clear the data and reset your device.
This is one of the ways you can install the stock ROM for your device. There are other ways to do it and you can choose a different way to do it depending on how easy you install ROMs on your device.
What should I do if I think that one of the applications may be causing the problem?
If you have a feeling that any of the apps you have downloaded to your device may be causing the signalless problem, you should check if your device is running in safe mode. If your phone or tablet works well in safe mode but if the problem recurs when it is in normal mode, an application is definitely the cause of the problem because the safe mode disables all third-party applications.
- Press and hold the power button until you see the power options on your screen.
- Press and hold the power option and you will get a window that will ask you if you want to restart your phone in safe mode.
- Press OK to confirm and continue with the restart.
- Once the device has restarted, you will see the words Safe Mode on the screen.
Check if the phone works properly in safe mode. If the problem is resolved, the problem can be found in one of the applications. You can reset your phone to the factory settings so that all applications will be deleted.
On the other hand, you can restart your phone once more to switch to normal mode and uninstall the applications that you think might be causing the problem. After each uninstallation, check if the problem is solved.
All these solutions can work for all Android devices such as Samsung Galaxy, Galaxy Note series, HTC One, LG, etc. who have no signal problems. If these solutions do not work for your phone or tablet, you should consider leaving the phone with a store where you purchased it or your operator.
You can also read: How to set unique ringtones for contacts on Android
The final step is the factory reset, but be sure to back up all of your data. Here is how to reset the factory data:
- turn off your device first.
- Then hold the Home, Power and Volume Up button for a few seconds until the Android logo appears.
- Release the buttons then. Use the Volume Down button to highlight the options and the Power button to confirm it. Highlight the factory reset option and confirm it with the power button.
- Then select Delete all user data and confirm it.
- Wait a few seconds to see the option to reboot the system now and select it. The telephone will then be restarted and you will have to configure it again from scratch.
Problems such as not registered on the network, No network coverage on the Samsung Galaxy, AT & T, Version, Sprint, T-Mobile US is also very common. Signal error is not a carrier problem. So if you try a SIM card from another provider, you will still run into this problem.
See also -Restore Galaxy Null IMEI # and patch not saved on the network