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Is Your Samsung S21 Driving You Crazy? Find Out Why It Keeps Restarting!

Tired of your Samsung S21 constantly restarting? Discover quick and effective solutions in this must-read blog post! Don’t let the rebooting issue ruin your day – click to learn more now.



What to do if your Galaxy S21 keeps rebooting

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Are you frustrated with Samsung S21 rebooting randomly? Users have reported this issue after the May 2023 update of their device. Having a phone that keeps restarting can be quite annoying and uncomfortable to use, but there are ways to get it fixed quickly and easily.

This blog post will discuss the potential causes for the constant restarts on Samsung Galaxy S21 phones as well as provide troubleshooting tips that could help fix your issue. So don’t give up – keep reading to find out how to address this problem and once again enjoy glitch-free usage of your phone.

Key Takeaways

  • Common Causes of S21 Restarting include update problems, app compatibility issues, battery or power-related issues, and hardware malfunctions.
  • Useful Solutions for Samsung Galaxy S21 Restarts involve performing a forced restart, clearing the cache partition, resetting network settings, and factory resetting the device.
  • Possible Issues such as power surges due to poor battery performance and faulty components can cause random reboots on devices like Samsung S21.
  • Professional help is recommended in cases where basic troubleshooting measures have not improved the issue; this includes taking it into shops for diagnostics along with replacing certain parts if needed.

Causes of Samsung S21 Restarting Issues

Common culprits for the Huawei P30 Pro restarting issue include update problems, app compatibility issues, battery or power-related issues, and hardware malfunctions.

Firmware/software update problems

Firmware and software update issues are among the most common sources of trouble with Samsung S21 devices. These problems can range from inability to install an update, bugs causing repeated reboots after updates, failed attempts in installing firmware/software packages, and black screen of death (BSOD).

Firmware-related glitches are often caused by server-end errors that arise during the updating process due to unexpected interruptions or compatibility issues. On rare occasions, users have encountered BSODs after a major update which could signal some major underlying hardware problem as well.

Battery and circuitry malfunctions resulting in drained batteries or device overheating can also cause random restarts while using certain apps.

It is important for Samsung to thoroughly investigate these types of software/firmware related complaints and devote resources to identifying what is going wrong so they may factor this into their future development plans and handle similar issues better next time around within short time frames.

App compatibility issues

For users of the Samsung S21, an important factor to consider when troubleshooting their device’s random restarts is app compatibility. Many unintended problems can occur within a smartphone system due to apps not being optimized or compatible with the latest updates for that particular device version and software.

Any sort of interference between two incompatible applications can cause conflicts and instability in the phone, leading to frequent reboots or even crashes when certain tasks are performed.

To determine if app compatibility is contributing to this issue on your Samsung S21, it is necessary to look at which specific programs may be causing disruption on your device by checking whether they have been updated recently (or ever).

Applications from third-party developers tend more often than not to require maintenance updates regularly as newly released systems come out; these need attention lest when you open an unoptimized program, you stumble upon numerous bugs that force your phone’s reboot cycle—a process that will be repeated until all unexpected encounters are avoided successfully by updating each app through a trusted source such as Google Play Store or App Store.

Regular clearing of application caches helps too from time to time so none accumulates while utilizing services for long periods of time, providing extra relief against instability brought about by wrongful data handling inside pockets reserved specifically for installed programs.

Battery or power-related issues

Battery and power-related issues can cause the Samsung S21 to keep randomly restarting. One of the most common causes is a firmware or software update malfunction when bugs present in the new version are driving problems with power management and battery life.

App compatibility issues may also be contributing, as some apps may not function properly when running on newer hardware or operating systems, leading to frequent restarts. Even if no updates have been made recently, it’s worth checking for any background tasks running that could affect device performance and contribute to unwanted restarts.

Another possibility is related to hardware malfunctions, such as an issue with the charger cable failing, which can prevent proper charging hence drastically reducing runtime; this situation can lead to repeated shutdowns due to lack of charge.

Alternatively, problems with batteries used by Samsung phones themselves might put pressure on internal circuitry resulting in erroneous data readings affecting overall phone operations culminating into random reboots etc.

Users should try simple solutions like performing a forced restart, clearing cache partition, and deleting possibly faulty applications first before attempting more drastic options like resetting network settings and factory resetting their devices; these steps help eliminate persistent software faults causing unexpected rebooting behavior from a device.

Hardware malfunction

Hardware malfunction is one of the top causes of Samsung S21 restarts. In some cases, faulty components can cause random reboots on devices like the Samsung Galaxy S21. A hardware problem can be caused by issues in any component, ranging from the display and battery to RAM and internal storage.

When these components start to act up or fail altogether, they can interfere with the smooth functioning of the device and may even lead to a complete system failure if left unresolved for too long.

For example, over time, due to excessive use, poor battery performance could result in more frequent power surges leading up to limit restarting episodes on the phone. Such malfunctions require professional attention as basic troubleshooting measures like clearing cache partitions or uninstalling problematic apps might not provide a lasting remedy for this issue without proper diagnostics being done on-hand at a service center, along with parts replacement if needed.

Solutions for Samsung S21 Restarting Issues

Some useful tips to fix the Samsung S21 reboot loop issue include performing a forced restart, clearing the cache partition, resetting network settings, and factory resetting the device.

Read on to find more solutions!

Perform a forced restart

A forced restart on Samsung Galaxy S21 can help fix the issue of randomly restarting. This simple action unshuts down or freezes apps and services that may be causing the problem, thus resolving it in a short period of time.

To perform a forced restart on S21, press and hold the Volume Down + Power buttons together for 10 seconds until the screen turns off. Afterward, release both buttons simultaneously to turn on your device again.

It’s important to note that when performing a force restart, all your unsaved data will be lost—including recently opened applications and edited files—so make sure you save any changes before firing up this trouble-shooter method.

Also, if after initiating this procedure multiple times, there is still no improvement and constant reboots occur with increasing frequency, then it’s likely an update bug is at play here –especially if the rebooting only started following an OS update– so consider rolling back your software version for relief from this issue.

Clear cache partition

Performing a forced restart can help a Samsung S21 that keeps restarting. To clear the cache partition, navigate to Recovery Mode by pressing and holding the Volume Up, Bixby and Power buttons until Prime logos appear on-screen.

Next, select “Wipe Cache Partition” using the power button and wait for the system cache partition to clear. It is important to ensure all apps are updated before attempting to clear the cache partition because older versions may be giving compatibility issues resulting in unexpected device restarts.

Furthermore, clearing cache files from the phone’s system partition may also help resolve restarting issues related to software bugs caused by updates or app incompatibilities. In addition, repairing apps while in recovery mode can also be done alongside clearing out caches, ensuring the successful resolution of sporadic reboots. Computer glitches with low battery levels could also lead to unexpected shutdowns, so users should check their device regularly for any signs of battery irregularities indicated through low charge notifications or warning alerts further factory resetting the smartphone would provide drastic measures retaining all memory will remain unaffected however keep safety precautions intact when committing any changes such as backups prior making adjustments.$.

Uninstall problematic apps

If your Samsung Galaxy S21 keeps restarting, one of the possible causes is a problematic app. Crashes, freezing, and unexpected restarts can be signs that an app you downloaded or installed is causing problems with your device’s software.

To troubleshoot the issue, it may help to start in Safe Mode. This will let you identify any potentially problematic apps and uninstall them to find out if this resolves the restarting problem on your phone or tablet.

One option for removing a troublesome app from your device is simply uninstalling it or disabling its permissions. Uninstalling an application will remove all stored files associated with that App from your device, while disabling an app means that you’ve limited or restricted functions within the App itself.

Reset network settings

Resetting network settings on a Samsung should be the first step that users take when trying to troubleshoot restarting issues. By resetting the network, users can potentially get rid of random performance issues as well as any internet connection problems.

To access and reset the network settings on a Samsung S21 device, start from your home screen and select “Settings” > “General Management” > “Reset” > then finally tap on “Network Settings Reset”.

It is important to note that this process will remove all saved Wi-Fi networks and Bluetooth connections. There are some devices where you may need to enter PINs or passwords for both WiFi connections and Bluetooth before starting the reset process; make sure you have these details written down somewhere beforehand so everything can be quickly reconnected afterward.

Once you have completed this step, you should restart your Samsung Galaxy S21 device, which will help with potential system optimization, including resolving intermittent restarts or poor battery life, among other issues related to data usage/connections (e.g., text messages problems).

Factory reset the phone

Factory resetting the Samsung S21 may be an effective way to fix restarting issues. It should only be performed if all other solutions have failed, as factory resetting will erase your stored data and personal information from the device.

Before performing a hard reset of your Samsung phone, make sure that you back up all important files and documents since it cannot be recovered after deletion. To factory reset your Samsung phone, open the Settings menu on your device and look under ‘User & Backup’ category for an option with ‘Reset’ written in it.

Tap this option multiple times until a prompt appears asking if you wish to proceed with the process. If so, select ‘Yes- delete all user data’ to begin the factory reset process, which could take up to 5 minutes depending on how much stored data needs erasing from memory.

Seeking Professional Help for Samsung S21 Restarting Issues

When a Samsung Galaxy S21 smartphone experiences frequent random restarts, it leaves users in frustration and annoyance. The cause of the reboot issue can be difficult to pinpoint as it could be due to firmware glitches, hardware malfunction, or software incompatibilities.

If these potential resolutions fail to solve the problem, seeking professional help is the best way forward.

Professionals are well-versed in handling Samsung products and offer speedy fixes for such restarting issues. Their tedious yet thorough diagnoses can detect if any hardware components need repair or replacement.

Troubleshooters may also check whether any apps installed on the device are causing incompatibility issues leading to phone crashes or restarts. Furthermore, technicians analyze whether updating major pieces of software could restore normal functioning of the phone and optimize its speed and performance as intended by manufacturers at all times.

In addition, experts possess the required tools that allow them to update existing device files with custom versions from older firmware if necessary. Moreover, they come up with innovative changes that reduce battery drain problems while avoiding repeating crashes and restarts in an effective manner.

As a result, clients always get satisfactory results after being serviced by professionals, which leads them satisfied overall experience with their device going forward. Therefore , anyone experiencing recurrent restarting from their S21 devices should undoubtedly seek reliable tech support services renowned for providing quality assistance regarding this concern once it is undiagnosable by other common solutions like reinstalling apps , clearing caches, or performing hard reset, etc.,


The Samsung S21 constant restarting issue has been causing trouble for many users. While there are a few simple steps one can perform, it is important to seek professional help if the problem persists.

The suspected causes of this issue include firmware/software updates, app compatibility issues, power-related complications and sometimes even hardware malfunctioning. As reported by some on Reddit, the S20 model also seems to be having issues after an update.

To tackle such problems, basic solutions like forced restarts or clearing the cache partition can be done, but ultimately, due care should be taken to ensure complete resolution as further negligence may leave your device in a worse state than before.

Hence we recommend that you contact customer service experts regarding any and all queries with respect to your device’s performance for timely resolution of software-based technical errors.


  1. Why is my Samsung S21 rebooting?

The most common reason why a Samsung S21 keeps restarting is that it has encountered an issue with its operating system or applications, which can be triggered by a range of external factors, including software updates, outdated hardware, corrupted files, and problems with settings.

  1. What steps should I take if my phone keeps restarting?

First off, you should try to identify the cause of the problem by reviewing your device’s recent activity, such as downloads & app installations. If nothing seems out of normal, then performing a soft reset through safe mode may help resolve issues without resorting to factory resets or other drastic measures.

3. Can reinstalling apps solve this issue? Yes – in some cases uninstalling certain apps have been known to fix reboot loops on devices, so this would be worth attempting before any further steps are taken.

4. How do I enable safe mode on my device?

To enable Safe Mode on your Samsung S21, you need to press & hold both Volume Up + Power buttons simultaneously until the boot menu appears and select the “Safe Mode” option from there; once enabled, all third-party applications will be disabled while allowing only ones installed within system folder being accessed until disabling mode again via same action (Volume up + power button).