Samsung Galaxy M40 Common Problems – PROVEN FIXES!

Today in this article, I have come up with a guide on fixing Common Problems In Samsung Galaxy M40.

So, Hello guys, how are you? I hope you are having a wonderful day.

If you are facing any type of issue or problem with Galaxy M40 smartphone, then you can quickly fix those problems by following our guide.

But don’t worry today I will show you a proven solution to all questions and issues.

The Samsung Galaxy M40

Samsung launched a phone in its M-series in 2019, which was named Galaxy M40. This device offers the best midrange experience, but many users are facing problems after using this Samsung Galaxy M40 phone.

The Galaxy M40 has a 6.3-inch FHD+ IPS LCD display with 1080 x 2340 pixels resolution and 19:5:9 aspect ratio, and it comes with punchhole display design.

This phone runs on One UI 3.1 based on Android 9.0 (upgradable to Android 11) operating system. Also, Samsung Galaxy M40 is powered by the Qualcomm Snapdragon 675 (11 nm) processor.

Talking about the Camera Module, the Samsung Galaxy M40 comes with a Triple-camera setup, with the first camera being a 32-megapixel primary camera, the second 8-megapixel ultrawide camera, then the third 5-megapixel depth sensor.

Moving on to the battery, the Samsung Galaxy M40 has a 3500 mAh battery with 15W fast charging.

Most Samsung Galaxy M40 Common Problems and Issues  – Let’s Fix THEM!

I have discussed various common issues and problems on Samsung Galaxy M40, and all solutions mentioned below are tested and proven methods.

Read this article till the end, and be sure to understand every method before applying it to your Samsung Galaxy M40 device.

Below I have shared 15+ different common issues and their solutions, these problems are common in almost every smartphone.

But if you are facing any problem with your phone, then I am sure that today you will definitely get your solution in this article.

Samsung Galaxy M40 can’t connect to Wi-Fi

If the Samsung Galaxy M40 can’t connect to Wi-Fi, then the problem is with the smartphone or the network but this is a very vague assumption.

Follow the below solution to fix your Samsung Galaxy M40 not connecting to Wi-Fi:

Solution Tips –

Before trying all the suggestions mentioned below, make sure to check if the software on your Samsung M40 is updated to the latest version.

Follow these steps to check:

  • Go to Settings >> Software update (System updates) >> Then Tap on the Download and install, or Check for system updates.
  • That’s It 🙂 Download NOW!

Check 2: Make sure the router is powered on.
Fix 3: Once, restart your Samsung M40.
Check 4: Reset the Network Settings of your Galaxy M40.

This process will refresh the connection to your device, and your device will be set to the default network setting.

In other words, if the problem is only a minor issue affecting your phone’s network services, then this method will fix it here.

To do this follow the steps given below:

  • First, Swipe down from the top of the screen
  • Then Tap the Settings Icon
  • Scroll down and Tap General management
  • Touch Reset
  • Hit Reset Network Settings
  • Now Tap the Reset Settings button
  • If you have any type of lock (Eg: Pattern, password, fingerprint, or PIN) in your phone then enter, and tap on Reset Settings again to confirm.
  • Finally, Tap Reset
  • That’s IT

Check 5: Boot your Samsung M40 in Safe mode

  • To Enter in Safe Mode follow this steps:
    • Press and hold the Power off button until the Safe mode icon appears.
    • Then Tap on the Safe mode to boot your Galaxy M40 in Safe mode.
    • That’s It 🙂

Check 6: Make sure that the Wi-Fi password you are entering is the correct Wi-Fi password.
Check 7: Factory Reset your Samsung Galaxy M40

If the above mentioned solutions do not fix the problem, then you can factory reset your Galaxy M40.

Doing a factory reset allows you to revert your Samsung M40 to factory default settings just like when you booted up your phone for the first time.

But before resetting make sure to take a complete backup of your Galaxy M40 phone as they will be deleted.

To do this follow the steps given below:

  • First, Swipe down from the top of the screen
  • Then Tap the Settings Icon
  • Scroll down and Tap General management
  • Touch Reset
  • Tap the Factory data reset
  • Scroll down to the bottom of the screen
  • And Tap Reset
  • If you have any type of lock (Eg: Pattern, password, fingerprint, or PIN) in your phone then enter, and tap on Reset Settings again to confirm.
  • Finally, Tap Delete All
  • That’s It

After the reset, set up your Galaxy M40 as a new device, if you are still facing this problem then comment below in the comment section, I will definitely try to answer your questions.

Must Read: Samsung Galaxy A70 battery drain issue, How to Fix Them?


Slow and sluggish performance issue in Samsung M40

Do you feel a slow and sluggish user interface while using your Galaxy M40?

If yes, then don’t worry, here is the complete solution for your device.

This is a common problem that almost everyone has to face at some time, and it is more common with older phones.

This problem also occurs in newer phones, because your RAM (random-access memory) is full of apps and files that you don’t use or need.

Please read all the steps carefully and then apply them on your Galaxy M40.

How to Fix Lag on the Samsung Galaxy M40 device?

Reason & Solution Tips –

  • If you use any type of antivirus app and junk cleaning app on your Samsung M40, then uninstall it.
  • One thing is universal: When does the phone slow down? In 90% of the cases, if your internal storage is running out or exhausted, your smartphone will slow down.
    • So my advice is: just free up some storage, and your Samsung Galaxy M40phone will be back to normal.
  • Uninstall those apps that you are not using for a long time.
  • Sometimes we use a custom theme on the phone, this can also be the reason for the slow down of the phone.
  • If you use the Third Party Launcher, then this may be the cause of this problem.
    • Solution: You should uninstall the Third Party Launcher and use the original System Launcher.
  • Use the lighter version of the apps like Facebook Lite, Twitter Lite, YouTube Go, etc.
  • If the latest software update is available on your Samsung M40, please update your phone software to the latest version.
    • To check: Go to Settings >> Software update (System updates) >> Then Tap on the Download and install, or Check for system updates.
    • That’s It 🙂 Download NOW!
  • Check that all the apps installed on your phone are updated?
    • To check and Update: Go to Play Store >> Tap Manage apps & device >> Updates available.
    • That’s It 🙂
  • Run your Samsung Galaxy M40 on Safe Mode.
    • To do this: Please follow this link, Here
  • Restart your device once, as a minor firmware issue could be causing your phone to slow down, which can be fixed with a restart.

After following all these solutions, if you find that your phone is still slow then try hard resetting your Samsung Galaxy M40.

With the help of all the above steps, I have discussed all the possible solutions so that you can quickly fix slow and sluggish performance issues in Samsung M40.


Poor battery life issue in Samsung Galaxy M40

The battery is the most important part in a phone but some might argue that it is the processor or the RAM.

But you guess, the phone cannot start without the battery, only this shows what is the importance of the battery in the phone.

If your Samsung Galaxy M40 battery is draining a lot, then you can follow the steps given below.

By following the steps mentioned below, you can find out what is causing the battery fast drain problem on your Samsung M40.

How to fix fast battery drain on the Samsung Galaxy M40?

Reasons & Solution Tips –

  • If you have installed apps like phone cleaner or other antivirus in your phone then uninstall it.
    • Reasons behind doing this: These apps keep running in the background and consume your phone battery.
  • Always download apps from the play store because sometimes we install third-party apps.
    • Reasons behind doing this: These third-party apps may contain malware which runs on the background of the phone and consumes a lot of battery.
  • If GPS is not needed, always turn off GPS.
  • Clear all your recently used apps from the recent app tab because it drains the battery quickly.
  • If you have installed an app that claims to increase your phone’s battery backup, then uninstall this type of app.
  • If you have kept the brightness of your phone’s display full, then keep it medium, because it also drains the battery quickly.
  • Keeping the power saving mode on for a long time in the phone also drains the battery quickly.
  • If NFC, Bluetooth, Wi-Fi are not needed, always keep them turned off.
  • If you still feel that your Galaxy M40 battery is draining fast even after following all these solutions?
    • So you can try to factory reset your Samsung Galaxy M40.
  • Avoid using Live Wallpapers on your Galaxy M40.

After following the above solutions, I am sure that you will not have to face the battery draining issue again.

If you are still experiencing this problem, then contact Samsung customer support and follow the instructions.

Must See: Fix Network Issue On the Samsung A32?


Mobile Data Problem On the Samsung Galaxy M40

If you are facing all these problems in your Samsung Galaxy M40 like not getting proper signal, network connectivity not working or you are seeing fluctuating phone networks.

Then you should try the steps given below.

How to Fix Cellular Network Issue On the Samsung Galaxy M40?

Solution Tips –

  • Remove SIM card from your Samsung Galaxy M40 device and insert the SIM again.
  • Turn ON Airplane mode for 30 seconds, and after a few seconds, turn it OFF again.
  • Reset your network settings.
    • To do this: Go to Settings >> SIM & Network >> Access Point Names >> Reset Network settings to default.
  • Make sure to restart your Samsung Galaxy M40 once, and check if your problem is fixed.
    • To do this: Press and hold the Power button and Tap Restart icon.
    • That’s It 🙂

This is a common problem, and you can troubleshoot this problem by following all these steps.

If you still have a network problem with your Samsung Galaxy M40, Then make sure to leave a comment, I will guide you further.


Heating problem on Samsung Galaxy M40

If you want to solve the heating issue on your Galaxy M40 then the first thing you need to do is to understand what is causing the problem.

And you know the reason?

There are three primary reasons why a smartphone gets hot, one is the phone’s processor, the second is the phone’s battery and the third is the phone’s screen.

If you are facing a heating issue on your Samsung Galaxy M40, you can fix it with a few changes.

How to fix the heating problem on your Samsung Galaxy M40?

Solution Tips –

  • First, restart your Samsung Galaxy M40 as normal then check if that fixes your problem.
  • When you charge your device, remove the phone cover.
  • Don’t play games while charging your phone, and do not use the phone too much.
  • Charge your Samsung Galaxy M40 with the original charger only.
  • Heating problems are also caused by playing games for a long time on your phone.
  • Do not overcharge your Samsung M40, and this can also cause heating problems.
  • Always keep your Samsung Galaxy M40 updated and keep updating all your apps.
  • Don’t install any third-party application, always download apps from the play store.
  • If your phone heats up while you are playing high-end graphics games, then it is considered normal.
  • Uninstall the apps installed on your phone, which you are not using for a long time.

I hope all these steps will fix your Samsung M40 heating problem. If your phone still has a heating issue then visit a service center to have it resolved.

Must Read: Fix Apps opening slowly on the Motorola Edge 20?


Apps opening slowly on Samsung Galaxy M40

This problem is very common, as this problem is found in all Android phones, and this problem is basically caused by improper RAM management of the phone.

If the app is opening slowly in your phone, then follow the steps given below, so that you can solve this problem.

How to Fix Apps Opening Slowly on the Samsung Galaxy M40?

Solution Tips –

  • First, check if your phone’s internal storage has enough storage. If not, uninstall the apps you don’t use.
  • Use the lite version application like Facebook Lite, Twitter Lite, YouTube Go, etc.
    • This can reduce more RAM usage on your phone.
  • If you have installed any type of Mod Apps in your Samsung Galaxy M40, uninstall it immediately.

Following all these steps, if you feel that your apps are still opening slowly, then you try Hard Reset Samsung Galaxy M40.


Samsung Galaxy M40 Phone unexpectedly shutting down

This problem is common as this problem occurs in all Android phones.

What happens in this problem?

In this problem, your phone suddenly turns off automatically.

If you are facing this type of problem with your Samsung Galaxy M40 smartphone, then definitely consider the steps given below.

How to fix sudden shutdown in Samsung Galaxy M40?

Solution Tips – 

  • If the temperature of the phone rises to the maximum level, then it can also be the reason for the sudden shutdown of your phone, so take care of heating issues.
  • Do not use a heavy back cover as this may cause heating problems.
  • Boot your Samsung M40 into Safe Mode.
  • Following all these steps, if you feel that your phone is still suddenly shutdown? then you try Hard Reset your Samsung Galaxy M40.

I hope all these steps will solve the sudden shutdown issue on Samsung Galaxy M40.

But you still encounter this issue, then go to the service center and resolve it.

Must See: Apps not downloading from the play store on Galaxy S21 FE 5G?


Samsung Galaxy M40 Screen frozen or stuck

This is a very frustrating problem, you may face this problem while doing some work, while playing a game or making a call.

Follow the steps given below to fix this problem:

Solution Tips –

Check 1: Make sure to update your Galaxy M40 to the latest OS available.
Check 2: Check for the latest software update for your Samsung M40.

  • To do this:
    • Go to Settings >> Software update >> Download and install
    • That’s It 🙂

Check 3: Also, check your Samsung M40 in Safe mode.
Check 4: Make sure to check the remaining storage space on your Samsung M40.

  • To do this:
    • Go to Settings >> Battery and device care >> Storage
    • Now from here you can see the amount of internal storage used and uninstall apps, images and files that you don’t need.

Check 5: If you face this problem while using an application, then clear the cache of that app.

  • To do this:
    • Go to Settings > Application Manager

Check 6: Simply uninstall, and Force stops the app you don’t use.
Check 7: Last option: Perform a Factory reset on your Galaxy M40.


Bluetooth not working in Samsung Galaxy M40

Many Samsung Galaxy M40 users have to face this problem, this problem is common, and you can easily fix it.

Because in an emergency you want to connect any speaker to the Bluetooth of your Android phone and it is not connected, or you share the necessary files to someone, and it is not shared.

How to Fix Bluetooth not working in Samsung Galaxy M40?

Solutions Tips: 

To solve this problem, follow the steps given below, that you can easily solve this problem:

Solution 1: Check for the latest software update for your Galaxy M40.

  • To Check this:
    • Go to Settings >> Software update
    • If available!
    • Then Tap Download and install

Solution 2: Reset Network Settings on your Galaxy M40:

  • On your phone, open the Settings
  • Locate: Apps → Settings → Backup and reset
  • Then Tap on Reset network settings
  • Now, Hit Reset Settings 
  • If you have any type of lock (Eg: Pattern, password, fingerprint or PIN) in your phone then enter, and tap on Reset Settings again to confirm.
  • That’s IT 🙂

Solution 3: Make sure to pair your Samsung Galaxy M40 with Bluetooth correctly, as incorrect pairing often causes this problem.

Fix 4: Do not share multiple files at the same time over Bluetooth.

Solution 5: Keep both devices close if you want better Bluetooth connectivity.

Must Read: Fix: Samsung Galaxy S10 Lite Touch Screen Not Working?


Keeps showing the ‘Camera Failed’ error on your Galaxy M40

How to fix the ”Camera failed’’ error on Samsung Galaxy M40? Follow the solutions bellowed to fix this problem:

Solution 1: Perform the Forced Restart your Galaxy M40

The first thing that you have to do if you’re getting the camera failed error is the forced restart, it’s a simulated battery removal that refreshes your phone’s memory, and reloads all services it might be just a result of a minor firmware issue, and the forced restart may be able to fix it.

  • Press the Volume down button and the Power button at the same time and hold both buttons for a few seconds or until the Samsung logo shows.

Once the phone has finished Rebooting try to see if the camera still fails if it does, then move on to the next solution.

Solution 2: Reset the Camera app of your Samsung M40

Resetting the camera means to clear its cache and data of the camera, if this is an app problem then this procedure will be able to fix it, don’t worry your pictures and videos will not be deleted if you did this.

  • Tap and hold on the camera icon until options show
  • Then Tap App info → Touch Storage
  • Tap Clear cache
  • Now tap on clear data and touch ok to confirm

After doing this open the Camera application and see if the problem still occurs if it does, then move on to the next solution.

Solution 3: Factory Reset your Samsung Galaxy M40

The factory reset should be able to fix this problem if it’s just a software-related problem, however before the reset make sure to take a Full Backup of your android phone.

I have already told you how to Hard Reset Samsung Galaxy M40? Let’s KNOW!


App not installed issue on your Samsung Galaxy M40?

Many times we are able to install apps successfully, but sometimes we try to install an app using a .apk file and get an “App not installed error”.

Don’t worry, this is a common issue, you can try some of the solutions below:

  • One of the most common causes of the ‘app not installed’ error is corrupted files, so when installing any application, double-check the files and make sure to use trusted sources to download apps.
  • If you have to install any APK file successfully, make sure to enable the Unknown sources option.
    • To do this: Go to Settings >> Security >> Then Turn on Unknown Sources.
    • That’s It 🙂
  • Make sure to disable Google Play Protect.
    • To do this:
      • First, Open Google Play Store.
      • Then click on the Menu >> Play Protect >> Settings.
      • Now disable “Scan apps with Play Protect.”
      • That’s It 🙂
  • If your device’s storage is full, you may face an ‘App not installed’ error, so keep your storage free.

Must See: How to fix sudden shutdown in Samsung Galaxy M01?


Samsung Galaxy M40 is stuck on booting mode

Is your Samsung Galaxy M40 stuck on the boot screen? And your phone is not booting up.

So don’t worry!

Below I have covered some possible solutions that can fix this problem:

How to fix Samsung Galaxy M40 stuck in booting mode?

Solution Tips ~

  • Force restart your Samsung M40.
    • To force restart it, press and hold Volume Down and Power keys for a few seconds.
    • That’s It 🙂
  • Boot your device in recovery mode and wipe the cache partition.
  • Enter your device in safe mode:
    • Press and hold the Power off button until the Safe mode icon appears.
    • Then Tap on the Safe mode to boot your Galaxy M40 in Safe mode.
    • That’s It 🙂
  • Last option: Perform Factory Reset on your device by using physical keys.

Unresponsive touchscreen issue on a Galaxy M40

when the touchscreen on your Samsung Galaxy M40 or any smartphone for that matter no longer responds.

How to Fix Samsung M40 Touchscreen Issues?

It would be difficult to troubleshoot if you may not be able to properly shut it down because the screen won’t respond but don’t worry as long as the screen is not broken you can always expect it to be a firmware issue.

Before trying all the suggestions mentioned below, make sure to check if the software on your Samsung M40 is updated to the latest version.

Follow these steps to check:

  • Go to Settings >> Software update (System updates) >> Then Tap on the Download and install, or Check for system updates.
  • That’s It 🙂 Download NOW!

There are other solutions that I want to share with you here.

  • Restart your Samsung M40.
    • To do this:
      • First, Press and hold the power button
      • Then tap Restart icon
      • Now Tap on the Restart again to restart your Galaxy M40
      • That’s It 🙂
  • Optimize device performance
    • To do this: Go to Settings >> Device care >> Then tap Optimize now.
  • Boot the Samsung Galaxy M40 in Safe Mode.
    • To do this:
      • Press and hold the Power off button until the Safe mode icon appears.
      • Then Tap on the Safe mode to boot your Galaxy M40 in Safe mode.
      • That’s It 🙂

Even after following all the solutions your problem is not resolved then you should try hard resetting your Samsung Galaxy M40.

Wait for your smartphone to reboot, then set up your Galaxy M40 as a new device.


Apps and Games Crashes Suddenly on the Samsung Galaxy M40

If you open an app or game, and that app suddenly closes or crashes?

Don’t worry!

This is a common problem, and follow the steps below to resolve this issue.

How to fix sudden app crashes on Samsung Galaxy M40?

Solution Tips – 

  • First, update your apps to the latest version.
  • Uninstall and reinstall the apps that are causing this problem.
  • Make sure to clear the cache of the app which has crashing problem.
    • Go to Settings >> Application Manager
  • If your phone has power saving mode enabled, then Disable it.
  • Restart your Galaxy M40, and check if your problem is fixed or not.

The above steps can be used to solve this problem, if you are still facing this issue

Then leave a comment mentioning your problem, I will try to fix your problem as soon as possible.

Must Read: Bluetooth not working in Galaxy S10 Plus, How to Fix Them?


Face unlock not working on Samsung Galaxy M40

If Face Unlock is not working on your Samsung Galaxy M40? So I have given some tips below, please follow them.

How to Fix Face unlock not working on Samsung Galaxy M5?

Solution Tips – 

  • Restart your Samsung M40 then check if Face Unlock is working or not.
  • Disable face lock and Re-enable it.
  • Remove your old Face data and add again.
  • Make sure that the front camera of your phone is not covered by the back cover.

Follow all these solutions if you think your problem is still not fixed.

Then you try to hard reset your Samsung Galaxy M40.


Apps not downloading from the play store on Samsung Galaxy M40

If you are downloading any app from play store, and it is showing download pending without any reason.

Sometimes this problem is caused by a new update to Play Store, this is a common problem that you may face.

Don’t worry!

You can solve this problem with the steps given below.

How to Fix Apps not downloading from the play store on Samsung Galaxy M40?

Solution Tips – 

  • First of all, reboot your Galaxy M40 and see if your problem is resolved or not.
  • Make sure to clear the cache and data of the Google Play Store app.
  • Set “App download preference” to “On any network”.
    • To do this: Open Google Paly Store >> Then Tap on Settings >> Network preference >> App download preference >> select Over any network.
    • That’s It 🙂
  • Clear the Play Store local search History.

Read Here: Face unlock not working on Samsung Galaxy S10 5G?


Frequently Asked Questions
Can I factory reset my Samsung Galaxy M40?

Yes you can! In fact, you can do a factory reset on all Android devices. Check out this article to know more about the hard reset (factory reset) procedure.

Should I buy Samsung Galaxy M40?

Yes, you can buy Samsung Galaxy M40, it is a good phone. Don’t get discouraged by reading this article.

Since almost every phone has similar problems and they can be easily fixed.

So a good user just needs to know how to fix it!

Is Samsung Galaxy M40 waterproof?

No, Samsung Galaxy M40 is not waterproof or water-resistant as it is a mid-range smartphone.

Conclusion:

With the help of this guide, I have shown you how to Fix Samsung Galaxy M40 common problems so that you can easily troubleshoot your issue.

If you are planning to buy Samsung Galaxy M40, don’t be disheartened! The Samsung M40 is still a good phone to buy, and the problems we’ve discussed are very common and are easily fixed.

Tell me how was your experience with Samsung Galaxy M40?

I hope you find this article useful and you are able to solve the problem on your Samsung Galaxy M40 device.

If you have any doubts or questions related to this guide, then make sure to drop a comment, and I will try to resolve your issue as soon as possible.

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