As of late, I’ve encountered users who were really excited about their Samsung Galaxy A42 6.6-inch super AMOLED display. Yet, after a month or two, they come crying, telling me that the super screen has failed them.
Apparently, they’ve been plagued with various touch screen issues, resulting in a very troublesome user experience. To help them out, I rolled up my sleeves and delved into various solutions—but let’s first discuss why the issue happens.
The Samsung Galaxy A42 touchscreen can malfunction due to minor system errors and bugs. External factors like dirt buildup, moisture, and incompatible screen protectors can also stop the touchscreen from working correctly.
Don’t worry if troubleshooting these problems looks like a lot of trouble. In this post, I’m showing you ten detailed, easy-to-follow fixes to help you overcome the Galaxy A42 5G touchscreen issue in a flash. Read on!
FIX 1. Restart your phone
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 4 |
| Time to Perform Fix | 40 seconds |
| Things Needed | A Samsung Galaxy A42 5G |
System-related bugs and glitches are often behind your faulty Samsung Galaxy A42 5G. As such, your go-to solution should always involve restarting your phone’s system, allowing it to correct all minor errors by refreshing its memory.
This solution works for various device errors, including your Galaxy A42 5G’s screen issue. Thankfully, restarting a Samsung phone is quick and easy, making it the quintessential starting trick to try when troubleshooting device errors.
Also, a simple restart won’t cause you to lose any data, file, or app, so there’s no reason to worry about possible drawbacks.
| Step 1: Hold the power and volume down buttons of your Galaxy A42 5G simultaneously.  |
| Step 2: Wait for the Samsung Galaxy logo to appear on the screen and release both buttons.  |
| Step 3: Let your Galaxy A42 5G complete its bootup sequence.  |
| Step 4: Operate your Galaxy A42 5G and test its screen. |
FIX 2. Clean the screen
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 1 |
| Time to Perform Fix | 30 to 60 seconds |
| Things Needed | A Samsung Galaxy A42 5G A soft microfiber cloth Distilled water 70% or higher Isopropyl or Ethyl alcohol solution |
Despite the quality of Samsung’s LCD panels, they’re not immune to dirt buildup and moisture because that rests on your shoulders. Simply put, it’s up to you to ensure your Galaxy A42 5G’s touchscreen is always clean and dry when you use it.
Otherwise, dirt and moisture from surfaces or your finger — basically anything your phone’s in contact with — may affect your phone’s ability to recognize your touch inputs.
For Samsung touchscreens, a microfiber cloth is the best cleaning tool we recommend since it’s soft and lint-free, so you won’t accidentally scratch its surface.
For an extra oomph, apply some distilled water or alcohol to the microfiber cloth to help with disinfection. Using other liquids is unsafe since moisture is harmful to electronic devices.
FIX 3. Replace/remove the screen protector
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 1 |
| Time to Perform Fix | 30 to 60 seconds |
| Things Needed | A Samsung Galaxy A42 5G A compatible screen protector |
Like smudges, your phone’s screen protector can affect its ability to register your touch inputs.
However, this isn’t a common problem since most screen protectors nowadays are decent unless you got yours for dirt cheap, which translates to poor build quality.
In such cases, the ideal solution is removing the screen protector to stop your Galaxy A42’s screen from not working. Unfortunately, the downside is you leave your Samsung phone prone to scratch damage, which isn’t advisable.
Your other recourse is to replace the cheap screen protector with an excellent-quality substitute. This way, you don’t risk scratching your Samsung Galaxy A42 5G during use while ensuring its touchscreen works in perfect condition.
FIX 4. Enable touch sensitivity
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 3 |
| Time to Perform Fix | 10 seconds |
| Things Needed | A Samsung Galaxy A42 5G |
It’s understandable if you can’t immediately get a suitable replacement for your Samsung phone’s incompatible screen protector. In the meantime, we recommend turning on the touch sensitivity feature to fix your Galaxy A42s screen issue.
As its name suggests, this feature will raise your phone’s touch sensitivity to recognize your inputs better while a screen protector is on.
However, it also means that increasing the touch sensitivity is only effective on Samsung devices with screen protectors.
If you have never applied a screen protector on your Galaxy A42 5G, the increase in touch sensitivity won’t likely have a significant impact. Therefore, you must try other solutions to troubleshoot your phone’s faulty touchscreen instead.
Step 1: Go to Settings. |
Step 2: Go to Display. |
Step 3: Enable Touch Sensitivity. |
FIX 5. Test its touchscreen
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 3 |
| Time to Perform Fix | 50 seconds |
| Things Needed | A Samsung Galaxy A42 5G |
If external factors aren’t causing your Samsung Galaxy A42’s screen to falter, it’s likely because your phone suffers from software errors or physical damage. You can confirm this by subjecting the device to a touchscreen test to pinpoint the problem.
This way, you can determine if a specific part of your phone’s LCD screen isn’t responsive to touch inputs. You can use this information to assess whether you can troubleshoot your phone or if sending it to a service center is the better option.
After all, troubleshooting a Galaxy A42 5G with a defective LCD screen will likely fail. Furthermore, replacing the broken part is tricky since Samsung doesn’t sell replacement LCD screens; they only outsource them from a specific manufacturer.
Step 1: Go to Settings. |
Step 2: Open “Battery and Device Care.” |
Step 3: Go to Diagnostics. |
Step 4: Select Touchscreen. |
| Step 5: Follow your phone’s on-screen instructions to test its entire touchscreen panel.  |
FIX 6. Update its TSP firmware
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 5 |
| Time to Perform Fix | 60 seconds |
| Things Needed | A Samsung Galaxy A42 5G A working internet connection |
Surprisingly, there’s a separate firmware for your Samsung Galaxy A42’s touchscreen. It means you can update your phone’s touchscreen panel firmware as a remedy whenever it acts up or stops working.
Fortunately, the firmware update process is simple to execute so long as you know the secret code you must dial on your Samsung phone.
You don’t have to scour the Internet for this code since we’re sharing it with you in the instructions below. You can follow these easy-to-follow steps to download and install the latest TSP firmware on your Samsung Galaxy A42 5G:
| Step 1: Connect your Galaxy A42 5G to your WiFi or mobile data network.  |
Step 2: Go to Phone. |
| Step 3: Enter *#2663# using its keypad and tap the Call icon to dial.  |
| Step 4: Click TSP FW update (General) to download the latest touchscreen panel firmware for your Galaxy A42.  |
| Step 5: Wait as your Galaxy A42 5G installs the new TSP firmware after downloading it. Note: Ensure your phone doesn’t turn off during this process, which can cause further problems. |
FIX 7. Boot your Galaxy A42 5G’s safe mode
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 4 |
| Time to Perform Fix | 40 seconds |
| Things Needed | A Samsung Galaxy A42 5G |
Another solution we recommend is booting into your Samsung Galaxy A42 5G’s safe mode.
Booting into safe mode will actually just help you confirm your suspicions. If the Galaxy A42 touchscreen issue doesn’t persist in this mode, it means one of your new apps is the culprit.
Fortunately, you won’t have issues identifying the culprit app since it’s often the one you recently added to your phone.
| Step 1: Press the power icon on the Galaxy A42’s notification panel.  |
| Step 2: Hold Power Off to reveal the safe mode button.  |
| Step 3: Click Safe Mode to reboot your Galaxy A42 5G.  Note: When your phone boots up, a “safe mode” text will be on the screen’s bottom-left corner |
| Step 4: Operate your Galaxy A42 5G and test if the screen issue persists. Note: Restarting your phone will let you exit safe mode. |
FIX 8. Wipe your Galaxy A42 5G’s cache partition
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 9 |
| Time to Perform Fix | 1 minute and 40 seconds |
| Things Needed | A Samsung Galaxy A42 5G |
Temporary data can also stop your Galaxy A42’s screen from working if it becomes corrupt. Unfortunately, it’s unavoidable for your phone’s cached data to turn corrupt because it can happen due to regular use.
The only solution is to clear your phone cache partition. Doing so should eliminate the corrupt cached data and fix your faulty touchscreen.
| Step 1: Press the power icon on the Galaxy A42’s notification panel.  |
Step 2: Click Power Off. |
| Step 3: Click Power Off to start your phone’s shutdown sequence.  |
| Step 4: Hold the power and volume up buttons of your Galaxy A42 5G simultaneously.  |
| Step 5: Wait for the Samsung Galaxy logo to appear on the screen and release both buttons.  Note: This action will load your phone’s Android Recovery menu. |
Step 6: Select “Wipe cache partition.” |
| Step 7: Select Yes to cache wipe your Galaxy A42 5G.  |
| Step 8: Wait until “Cache wipe complete” appears at the bottom-left corner of the Galaxy A42 5G screen.  |
| Step 9: Select “Reboot system now” and let your Galaxy A42 5G complete its bootup sequence.  |
FIX 9. Update your phone
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 3 |
| Time to Perform Fix | 50 seconds |
| Things Needed | A Samsung Galaxy A42 5G A working internet connection |
Another excellent solution is to update your Galaxy A42 5G to the latest version. This action will improve your phone’s performance and patch recurring bugs and glitches, including screen problems.
Some circumstances even call for a software update before your phone can return to working condition. Regardless, updating your phone’s software is always beneficial, whether or not it fixes the Galaxy A42 screen issue.
Step 1: Go to Settings. |
Step 2: Select Software Update. |
Step 3: Click “Download and Install.” |
| Step 4: Go to Download. Note: Sometimes, the Download won’t appear if you enable “Auto-download over WiFi” beforehand. It means your phone already has the software update after downloading it in the background. |
| Step 5: Click “Install Now” to apply your Galaxy A42 5G’s software update.  |
| Step 6: Wait for your Galaxy A42 5G to install the update and let it complete the restart sequence. |
FIX 10. Reset your phone
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 3 |
| Time to Perform Fix | 50 seconds |
| Things Needed | A Samsung Galaxy A42 5G |
Conducting the factory reset is usually the follow-up solution whenever updating your phone’s software doesn’t fix your current problem. Instead of adding something to your phone’s software, the factory reset deletes your data and reverts its default settings.
WARNING: Ensure you have a copy of your most pertinent files, apps, and phone preferences before you do a factory reset, as the process will delete them.
It allows you to address malware, temporary files, and terrible configurations that prevent the Galaxy A42 screen from working. Unfortunately, since you lose your data upon resetting your phone, we only suggest this method as a last resort.
| Step 1: Go to Settings. |
| Step 2: Click General Management and select Reset afterward.  |
Step 3: Click “Factory data reset.” |
Step 4: Go to Reset. |
| Step 5: Press “Delete All.” |
FAQs about Samsung Galaxy A42 5G
Running multiple apps simultaneously, even in the background, can quickly drain your phone’s battery. Similarly, graphics-intensive apps and games will draw much power from your phone’s battery.
The Galaxy A42 lasts 15 hours on average during everyday use. It may last shorter while playing graphics-heavy applications or using a 5G mobile connection.
Accessing the diagnostics menu lets you check your Galaxy A42’s battery health. You must go to Settings > Battery and Device Care > Diagnostics > Battery Status to view your phone battery’s health.
