Fix: Samsung Galaxy M12 No SIM Card Detected Error

The Samsung Galaxy M12 was launched in India with a large 6,000mAh battery and quad rear cameras. The device is powered by Exynos 850 SoC paired with up to 6GB RAM and storage is listed to be at up to 128GB. It came out of the box with Android 11 based on One UI 3.1.

Having mid-range or higher-end phones like Samsung does not guarantee that the devices will not fall victim to any issues. The devices have faced issues in the past, and one of the most common problems is the no sim card detected error. Whether the device is not detecting a sim card or throwing errors like No Service or No signal detected, we’ve listed some fixes to eliminate those issues.

In most cases, the sim card-related errors like No Sim Card Detected, No Service, etc., can be easily fixed. But, sometimes, the problem occurs when the sim card is damaged, or there’s some network issue in your area. In any case, applying the fixes, we have listed below is worth applying.

Samsung Galaxy M12 Device Overview

The Samsung Galaxy M12 features a 6.7-inch IPS panel with a resolution of 720 x 1560 pixels and an aspect ratio of 19.5:9. Yes, we don’t get an AMOLED panel here, but that is understandable since this is an entry-level M series smartphone from Samsung. For processing, we have Samsung’s very own Exynos 850, which is built on an 8nm manufacturing process. It is an octa-core processor with four Cortex-A55 cores clocked at 2.0 GHz and four Cortex-A55 cores clocked at 2.0 GHz. We get Android 10 out of the box with One UI 3.0 running on top of it.

In terms of optics, we get a quad-camera setup at the rear and a single camera at the front. At the rear, there is a 13MP sensor paired with an f/1.8 lens, an 8MP ultrawide sensor paired with an f/2.2 lens, a 2MP macro sensor paired with an f/2.4 lens, and a 2MP depth sensor paired with an f/2.4 lens. Coming to the front, we get a single 8MP camera for selfies. Both the front and the rear setup is limited to 1080p video recording.

There are two variants of the phone when it comes to RAM and internal storage. The base variant has 3GB of RAM, and 32GB of internal storage, and the higher variant has 4GB of RAM and 64GB of internal storage. There is a dedicated slot for storage expansion too. In terms of connectivity, we get Wi-Fi 802.11 b/g/n, Bluetooth 5.0, GPS, FM radio, and USB Type-C 2.0. Again for sensors, we get the rear-mounted fingerprint sensor, accelerometer, and proximity. The details about the other sensors are not yet confirmed. Powering all this up is a 6,000 mAh cell, that will support 15W fast charging.

Here’s what to do if your Samsung Galaxy M12 is not detecting SIM card

Fix 1: Turn Airplane Mode on and off

Whenever you face any sim card or network-related issues, you should first turn on the Airplane Mode and then turn it off. This method does the trick most of the time. This method disconnects your device from the wireless system until the option is not turned on.

To turn on the Airplane Mode, Navigate to Settings > Connections > Airplane Mode and then tap on the toggle next to the Airplane Mode. Alternatively, you can turn on the feature from the Quick Settings.

Fix 2: Perform a soft reset

Soft reset (also called Force restart) is more effective than performing a normal reboot. The No Sim Card Detection Error on your Samsung Galaxy M12 could result from a system glitch. Performing a soft reset ends all the running processes, including those responsible for system glitches, which can fix all the sim card or network problems.

To perform a soft reset on your Samsung Galaxy phone, press and hold the power button and volume down (-) button for a few seconds. Release your fingers from the buttons once the Samsung logo appears on the screen. Let the device reboot itself, and check if the sim card issue persists.

Fix 3: Remove and re-insert the sim card

Your phone can throw errors such as No Sim Card Detected when the sim card is damaged or misplaced in the sim tray. To rule out this possibility, open the sim tray and check if the sim card is placed as it should be. Also, check for any damage on the card. If you found any damage on the sim card, replace it by going to the respective carrier’s store. Otherwise, move on to the following method.

Fix 4: Reset network settings

Some changes in the network settings might have caused the device not to be able to detect a sim card. Thankfully, Samsung offers an easy way to reset all the changes. By resettings network settings, you will lose access to Wi-Fi passwords, paired devices, etc.

To reset network settings on your Samsung Galaxy M12, go to Settings > General management > Reset > Reset network settings > Tap on Reset settings.

Fix 5: Factory reset

If none of the methods has worked for you, we are left with the factory reset option. This method often works with software-related issues, including the No Sim Card Detected issue on your Samsung Galaxy M12.

By performing a factory reset on your phone, you will lose access to all your data. Therefore, take a complete backup of your phone before using this method. To factory reset your Samsung Galaxy M12, navigate to Settings > General Management > Reset > Factory Data Reset. After that, the device will take a couple of minutes to complete the process. Ensure that the device has at least 50% battery, as the process can sometimes take longer than usual.

We believe that one of the methods would have helped you fix the issue on your Samsung Galaxy M12. In the comments below, let us know which method did the trick for you.