Poor mobile signal reception, or simply “no network”, is a fairly common problem when working with modern smartphones. It sometimes “does not catch” due to the large distance to cell towers. Other malfunctions occur when errors occur in the software or hardware of the device. Or maybe the last and rare case – a cell phone jammer has blocked your phone.
Some problems are solved by changing the phone parameters; you need to contact the mobile operator or the manufacturer’s service centre to eliminate others. But if a cell phone jammer blocks your signals, there are a few things you can do to resume the signals. We will discuss this later.
All reasons can be divided into several categories: hardware and software.
Hardware Failure of the SIM card slot. A malfunction can happen for many reasons – the phone has been dropped, the SIM card has been connected inaccurately, or moisture has entered the case. Damage to the SIM card itself is a fairly common cause. It can occur if the SIM card is constantly rearranged from one device to another or handled carelessly. Disconnection of the antenna loop or breakdown of other modules associated with the connection to the operator. In this case, the device stops catching cell towers, and the network constantly disappears.
Software Faults in the operating system caused the communication module to shut down. Incorrect cellular settings or infection with malware can affect signal reception.
SIM card malfunctions If you suspect a SIM card failure, try installing the problem card on another device. If everything is working properly – the problem is not in it. If your smartphone has 2 SIM slots, move the card from one to the other.
This procedure can be performed independently and does not require disassembly of the phone case. If you determine that the SIM card broke, contact the service centre of the mobile operator for help. Services for issuing a new card are usually free when the old one has failed, but a passport may be required.
Communication module failure
As a result of the mechanical impact on the smartphone case, the modules responsible for receiving the network signal can be damaged. Disabling the SIM slot cable or antenna is a common cause of problems. To eliminate it, it is best to contact specialists since any intervention in the case of the device will void the warranty. Replacing the antenna with a low-quality Chinese analogue during the repair. Some “masters”, hoping to save money, use the cheapest modules. This leads to a deterioration in signal reception quality and a quick failure of the board.
Failure of the provider In some cases, it is enough to wait about an hour, and the problem goes away by itself. There is an overload of equipment on the side of the cellular operator, resulting in the entire grid “falling down”. Technicians quickly respond to such accidents with cell towers and correct the situation in minutes.
Checking the settings, Android and iOs devices can “lose” the signal after errors in the operation of the operating system. The following describes how to set up a network on your phone. Open the “curtain” of notifications and go to the device settings. Go to the “Mobile hotspots” tab and find the list of SIM cards. If your card is not detected, check if it is installed correctly in the slot. Open the Access Points menu. Click on the “Add” button. In the window that opens, enter the parameters for the current configuration.
Important! All the necessary data can be found on the mobile operator’s website. If you did not find information on the web portal, contact any offices and request data from consultants. Save the information and check if the cellular signal is working (as an option, if there are “sticks” in the device’s status bar). Tap on “Search…”. The phone will scan for available access points. The procedure can take 30 seconds to several minutes on older Android smartphones. After completing the search, click on the name of the mobile operator whose SIM card is on the phone. Check if the checkbox for “Data while roaming” is checked.
Try turning the radio button on and then off again. Reset settings After incorrectly flashing the device, the network may periodically disappear or work intermittently. In this case, completing the device’s diagnosis and restoring the factory firmware is required. In “especially neglected” cases, you can not do without a complete reset. Go to your smartphone settings. Open the “Backup and reset” tab, and tap “Perform factory reset”. Important! Do not check the box next to “Delete all user data and clear internal memory.” Confirm the reset. The procedure can take 15 to 30 seconds, depending on the workload of the phone’s processor.
The signal may drop if the signal is weak or the roaming settings are incorrectly configured. Just restart your smartphone or reset the network settings to fix most problems. How to do this is described in the previous paragraph. Incorrect firmware If you “flash” the device with incompatible firmware or perform the procedure incorrectly, the communication module drivers may fail. At the same time, the message “No network” will be displayed on the screen.
Sometimes, it will be enough to reflash the gadget back to the factory version of iOs or Android; sometimes, you will have to turn to specialists for help. Conclusion Cellular communication problems occur for various reasons – in some cases, the fault lies with the operator, but user actions cause the most problems. If malfunctions are detected – the cell phone writes the mobile network is not available, it is best to contact the service centre, but a normal reboot, reset and replacement of the SIM card can be done at home.
Block by cell phone jammer
If all of the solutions you have tried and failed. You have to consider the last reason – someone has blocked your signal. Cell phone signals are blocked in some places, like prisons or gas stations. With a cell phone jammer, you can easily disable the entire telecommunication system in a certain meter. A cell phone jammer is a powerful signal jammer designed to block phone calls. You can’t make a phone call within the jammer’s coverage. But how can I know if a jammer blocks my phone? Below are the things you have to check.
Did you only get zero signals in particular places?
If you only have this issue when you stay somewhere, like your home, office, etc. And the signals recovered immediately when you leave such places. That probably there is a cell phone signal blocker in that place.
Did the signal bar always stay at zero?
If a jammer blocks your phone, you will not get a weak signal. You will completely lose the signal without any opportunity to dial out.
But as mentioned above, blocking by a cell phone jammer is not that common. If that happens to you, there are little to no things you can do to recover the signal.