How to fix a Samsung Galaxy J2 Pro 2019 smartphone that is running very slow [Troubleshooting Guide]

Performance issues in mobile devices may occur earlier or later depending on the way they’re used. For example, a device is more likely to show symptoms of performance degradation with extensive heavy usage. This is when a device begins to slow down. Aside from heavy usage, there are other factors like faulty updates, software bugs and malware that can trigger a device to slow down. New powerful devices may slow down so early due to any of these factors. Just like what some owners of the new Samsung Galaxy J2 Pro 2018 smartphone are going through. Feel free to refer to the given solutions below, in case you’re among the affected users who need more inputs on how to speed up your new Samsung Galaxy J2 handset.

Before we proceed, if you’re looking for a solution to a problem with your phone, try to browse through our troubleshooting pages to see if we support your device. If your phone is in the list of our supported devices, then go to the troubleshooting page and look for similar problems. Feel free to use our solutions and workarounds. Don’t worry it’s free. But if you still need our help, then fill up our Android issues questionnaire and hit submit to contact us.

First solution: Reboot your phone (soft reset).

A soft reset or reboot not only fix minor software issues but also clears cache and temporary data from the phone system and the internal memory. This allows the device to perform better and faster afterwards. If you haven’t restarted your phone yet, then you must do so with these steps:

  • Press the Power button for a few seconds until the menu options show up on the screen.
  • Tap to select Power off option.
  • Then tap OK to confirm.
  • Wait for about 30 seconds then press the Power button again to turn your phone back on.

This won’t erase any important data and personal information you stored on the internal memory of your phone, so it doesn’t result to data loss.

Second solution: End all background apps.

Ending background apps can also help clear the internal memory to improve the device performance. Background apps are applications that are recently opened and running in the background. While keeping these apps opened can benefit in terms of multitasking and same apps reloading, they can also make the device slow and the battery to drain faster. Here’s how to end/quit background apps on your Samsung Galaxy J2 Pro:

  1. Tap the Apps icon from the Home screen.
  2. To access more Apps, drag the screen to the left side.
  3. Tap on Smart Manager.
  4. Tap RAM option.
  5. To close all background apps, tap End All. Doing so will instigate cleaning the internal memory (RAM) by closing all background apps.

After ending background apps, reboot your phone to refresh the system and clear the RAM as well.

Third solution: Boot into safe mode and diagnose apps.

Errant apps particularly third-party apps you’ve downloaded might be to blame. When any of these apps has gone rogue, chances are that it will trigger the processor to keep working until it gets exhausted. When the processor is revved up to a hundred percent, performance issues are expected to instigate. And this is when your device begins to slow down. To determine if a third-party app is causing your device to become so sluggish, enable safe mode on your Samsung Galaxy J2 Pro (2018). Here’s how:

  1. With the device turned on, press and hold down the Power button until the Samsung logo appears and the menu options to show up on the screen.
  2. When the menu options appear, tap Restart twice. Your phone will then restart.
  3. While the phone is restarting, press and hold the Volume Down button for a few seconds and then release when the phone is done booting up.
  4. You should then see the Safe Mode badge on the bottom left corner of the screen. That means your phone is already running in safe mode.

Observe your device performance and see if there are any improvements on the way it performs while in safe mode. If your phone is running faster in safe mode, then the problem could be due to an errant third-party application. Try to think of which from your downloaded apps is the trigger and then remove that app. If you cannot determine which app is to blame, then you may need to uninstall apps individually starting from the most recent app you’ve downloaded.

Fourth solution: Wipe cache partition on your Galaxy J2 Pro 2018.

Wiping the cache partition can also help especially if the problem is attributed to stacked temporary files and data (cache) from within the system cache partition. Unlike a factory data reset or master reset, wiping cache partition won’t delete any data saved on the internal memory of your device. Just be sure to select the right option. Here’s a quick walkthrough on how it’s done:

  1. Press and hold down the Power button until your phone shuts down.
  2. While it’s turned off, press and hold the Volume Up, Home, and Power buttons simultaneously for a few seconds.
  3. Release the buttons when the Samsung logo appears.
  4. Tap on the screen when the Android logo with No Command label appears. Your device should now be in recovery mode.
  5. Press the Volume Down button several times to highlight Wipe cache partition from the given options.
  6. Then press the Power button to confirm.
  7. Wait until the device is done wiping the cache partition and prompts to reboot system now. Press the Power button to confirm and instigate system restart.

After your phone reboots, use it as you normally do and see if it’s performing better and faster this time.

Fifth solution: Reset your phone to factory defaults (master reset).

You may have to consider opting for a master reset if the problem persists after performing all prior workarounds. The problem could be too complex that it requires a full system reset and then set your device as new. Please note though that this will erase everything from your phone’s internal memory, and therefore results to data loss. Should you wish to proceed, back up all your important data to restore them afterwards. If everything is set, follow these steps to reset your Samsung Galaxy J2 Pro (2018) to its factory defaults and clear complex errors and system glitches that caused the phone to perform very slow:

  1. Open the Apps menu.
  2. Tap Settings.
  3. Scroll to and tap General management.
  4. Tap Reset.
  5. Select Factory data reset from the given options.
  6. Read and review the message then tap Reset.
  7. Tap Delete All to confirm system reset.

Wait until the reset is finished and your phone reboots automatically. You can proceed with the initial device setup by then.

Other options to consider

If you haven’t yet updated your phone software to the latest version, then try to check for any available Android update to download and install. New updates bring in new features, enhanced functions and security enhancements to keep the device optimized and free from flaws.

Also care to check your phone’s available memory. Performance issues like sluggishness, lags, freezes, and random restarts are also tied to memory problems like insufficient memory on the phone. Verify and ensure this isn’t what causing your Galaxy J2 Pro 2018 smartphone to slow down. If necessary, remove all unnecessary apps and contents from your device including old messages and multimedia contents.

Seek more help

Contact Samsung Support to report the issue if it started after installing a new update and that it persisted after performing all applicable workarounds and troubleshooting procedures on your end. There might be some advanced settings that need to be modified or configured for your device perform at its best.

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