[SOLVED] Galaxy S3 Keeps Rebooting

If your Galaxy S3 keeps rebooting, the Power button may be stuck, and you should take a look at it. Other solutions include getting the battery out and putting it back in, removing the SD card, modifying the CPU frequency range, uninstalling updates, clearing cache/data of Touch Wiz, wiping cache partition, performing a factory reset,… Unable to carry out the solutions on your own? Then you should find this article helpful.

The Usual Suspects 

In use, Galaxy S3 could act up every now and then but if your Galaxy S3 keeps rebooting, it’s won’t hurt to consider these possibilities:

  • Power button is stuck.
  • Loose battery connection. 
  • SD card issues. 
  • Ill-fitted CPU frequency range.
  • Incompatible updates. 
  • Corruption.

Approaches To The Situation 

Check Out The Power Button 

All in all, it’s not uncommon for particles to collect around buttons over time which causes them to be stuck. If the Power button of your Galaxy S3 is stuck, it’s only natural that the device would keep rebooting. For good measure, it’s strongly recommended that you take a look at the Power button of your phone. If the button is indeed stuck, flick it a few times, pour a bit of Isopropyl alcohol (IPA) on it, etc. 

Get The Battery Out And Put It Back In

  • Step 1: Turn your Galaxy S3 on its back, remove the back cover and remove the back cover.
  • Step 2: Get the battery out, wait for a minute and put it back in. Make sure that the battery sits snugly in the battery compartment to secure the battery connection. 
  • Step 3: Press and hold the Power button to turn on the device then see how things turn out. 

Remove The SD Card

By taking advantage of SD cards, you could increase the amount of data that your Galaxy S3 is able to hold at a time. However, if the SD you use is damaged, corrupted and so on, boot loop is one of the consequences. Your phone keeps rebooting and there is a SD card inside it? In that case, it’s a good idea to power off your Galaxy S3, remove the SD card and power on the device. 

Modify CPU Frequency Range 

Usually, you don’t have to pay attention to the CPU frequency range of your Galaxy S3 but if the device acts up, modifications may be necessary. Nowadays, it’s possible to change the CPU frequency range in several but nothing outperforms CPU Adjuster in terms of convenience.  

  • Step 1: Download and install CPU Adjuster via Play Store
  • Step 2: Launch CPU adjuster then configure Minimum and Maximum CPU Frequency as you see fit. The suggested range is 350 Mhz – 600 Mhz but feel free to apply adjustments in times of need.
  • Step 3: Restart your phone. 

Uninstall Updates

Generally speaking, updates play a key role in optimizing the performance of apps but they may also create software conflict on occasions. Depending on the severity, software conflict could cause phones to reboot periodically which is annoying. On the bright side, if the presence of incompatible updates is the root of the problem, all you have to do is to uninstall updates. To uninstall updates, you need to go through the steps down below: 

  • Step 1: Open Settings, locate Application manager and hit it. 
  • Step 2: Click each of the apps on your phone and hit Uninstall updates.
  • Step 3: After you finish, restart your phone and determine whether the issue persists. 

As a precaution, you should think about disabling auto-update too:

  • Step 1: Open Settings, select About device and choose Software update.
  • Step 2: Uncheck the Auto-update checkbox. 
  • Step 3: Press the Home button (center) to go back to home screen then launch Play Store.
  • Step 4: Press the Menu button (left), hit Settings and uncheck the Auto-update apps checkbox. 
  • Step 5: Restart your phone. 

Note: You recently installed several third-party apps? Then it’s highly likely that one of the apps is responsible for the boot loop. As a precaution, you should boot into Safe Mode by following these steps: 

  • Step 1: Power off the device. 
  • Step 2: Press and hold the Power button. The moment you see the Samsung icon, let go of the Power button the tap the Menu button repeatedly until you reach the home screen. Assuming that you don’t mess up, you should see Safe Mode on the bottom left of the screen. At that point, determine whether your phone works as expected. 
  • Step 3: If the device no longer reboots at whim, you could conclude that a third-party app is the one responsible for everything. Your best bet is to uninstall the apps one by one and witness the result. 

Clear Cache And Data Of TouchWiz 

For your information, TouchWiz is the user interface used by Galaxy S3 as well as many other Samsung devices. If TouchWiz is corrupted for some reason, there is a good chance that your phone is going to reboot on its own. To get rid of the corruption, you must clear cache and data of TouchWiz, 

  • Step 1: Open Settings, select Applications manager and choose TouchWiz. 
  • Step 2: Click Clear cache then pick Clear data. 
  • Step 3: Restart your phone. 

Wipe Cache Partition 

  • Step 1: Power off the device.
  • Step 2: Press and hold Power, Home and Volume Up buttons. Let go of the Power button as soon as the device vibrates but keep pressing the other two buttons. 
  • Step 3: Let go of all buttons when you reach the Recovery Mode menu. Next, use Volume Up/Down buttons to navigate to wipe cache partition and press the Power button once. Confirm your decisions if prompted. 
  • Step 4: Proceed to navigate to reboot system now using Volume Up/Down buttons and press the Power button once. 
  • Step 5: Witness the result. 

Perform A Factory Reset

  • Step 1: Power off the device.
  • Step 2: Press and hold Power, Home and Volume Up buttons. Let go of the Power button as soon as the device vibrates but keep pressing the other two buttons. 
  • Step 3: Let go of all buttons when you reach the Recovery Mode menu. Next, use Volume Up/Down buttons to navigate to wipe data/factory reset and press the Power button once. Confirm your decisions if prompted. 

How Many Years Does A Samsung Battery Last?

Quite a few factors affect the lifespan of a Samsung battery: type of battery, the way the battery is used, battery maintenance, … Lithium-ion batteries (like those used in many Samsung devices) usually last between 3 and 5 years though they could last much longer with proper care. To extend the life of your Samsung battery, it’s essential to charge the battery properly. Also, you should avoid exposing the battery to extreme temperatures, using the battery to depletion and so on.