Tips and tricks to fix SAMSUNG GALAXY A40 problems. This phone have version code as SM-A405F / SM-A405FN / SM-A405FM depend on country release. Some users maybe still want to use less then 6 inches LCD screen smartphone and Samsung give other alternative with 5.9 inches LCD screen Super AMOLED screen at SAMSUNG GALAXY A40. The screen already have Full HD+ resolutions at 1080 x 2340 pixels. The first release in the market, SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) use Android Pie operating system but this phone does not include at Android One family. Dual camera are available at this phone with 16 megapixel + 5 megapixel sensor for wide and ultrawide.  Ad mid end smartphone, this phone should able to work without lag with Samsung manufacture processor using Exynos 7885, this phone can run most applications without problems. Find more review and information about how to solve SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) problems at www.hard-reset.org community.

 

What are Advantages of SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) Specifications:

GSM 3G HSDPA with 4G LTE, Dual Simcard
LCD 5.9 inches
Internal memory 64 GB with 4 GB RAM
Main Camera Dual 16 MP f/1.7 + 5 MP f/2.2 autofocus, LED flash
Front Camera 25 MP for video conference & selfie photography
Octa-core 2 x 1.77 GHz Cortex-A73 & 6 x 1.59 GHz Cortex-A53
GPU Mali-G71 MP2
Operating system Android Pie version 9.0
Battery Li-Ion 3100 mAh

 

 

How to Fix or Problem Solving for Recovery SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) hang or not responding or malfunctions or stuck or freezing or bricked ?

Internal memory is very important for Android smartphone to keep almost any applications, although some data can be move to external memory, but usually internal memory will give faster access to make applications work with less lag. SAMSUNG GALAXY A40 have 64 GB internal memory and also work with 4 GB RAM. Some storage capacity will be use to keep Android Pie operating system and also for factory default applications, but we still have many free storage inside this phone to use for install many applications from Google Play Store like Telegram, Viber, Facebook, Whatsapp, Line Messenger, WeChat, Skype, and some other more.

We always give advice for any users to be careful when we want to install new or not famous applications, because there are some bad applications which may contain viruses or malware that can make troubles at our SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) such as hang or stuck or bricks or frozen or LCD touch screen not responding. Therefore if we must install new or not famous apps, then please read as many users review as possible. Usually that bad apps will not get Verified by Play Protect information when the download process running.

What do we have to do? We have to try remove temporary files and caches by doing soft reset or reboot. When this phone can work again or can boot properly, then please try to download one good free Antivirus from Google Play Store like AVAST or NORTON. This antivirus will scan all installed apps and give recommendation setting for safety usage. If the problems still happen, then please do hard reset or master format like steps above. Hard reset will remove all important files, therefore we have to backup all data before performing hard reset. All account like Samsung account and Google account will also wipe or remove from SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) after finish hard reset. Please do not install any APK files from unknown resource, because it is very easy to make our phone get some troubles.

 

How to Force Shutdown or Force Soft Reset or Reboot or Restart SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM)  ?

Sometime this phone can work with lag or not smooth or LCD touch screen not responsive with our finger touch, then maybe some installed apps crash or corrupt. We have to try remove temporary files and caches inside SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) to make it work normally again. Please press and hold POWER button until SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) shutdown or turn off by itself. You may also try press and hold POWER + VOLUME DOWN button to shut it down. After it is totally off, then we can press again POWER button to turn it ON. This process will not remove any important data, therefore we can do this process anytime we want. If our SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) still can work properly, but we want to clear temporary files and caches from some applications, then please press and hold POWER button until pop-up menu appear, continue choose Shutdown / Power off / Reboot menu.

 

 

How to backup data or Contact at SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM)  ?

We can use microSD external card to copy or move important files using File Manager applications. If our SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) has already signed in with Google account, by default our contact will be synchronize in the background to Google server. Please make sure we check all contact at Google contact server using Internet browse to make sure backup is done.

 

#Option 1, How to Hard Reset SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) with software menu:

  1. Turn on this phone
  2. Make sure SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) battery already charge properly
  3. Go to menu: Setting > General tab > Backup & Reset > Factory data reset > Reset device
  4. Choose Erase Everything
  5. SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) will do the process to Master Reset to Factory Default

 

hard reset samsung galaxy a40

#Option 2, How to Hard Reset SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) with Hardware key button:

  1. Make sure the battery of SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) charge properly or battery have more then 50% capacity
  2. Turn off SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM)
  3. Press and hold together : Power Button + Volume Up until Logo appear, then release all button
  4. Please wait until we see the menu at LCD screen, choose Wipe Data/Factory Reset with Volume Button to select and use Power Button to ok or enter.
  5. The SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) will do the process of restoring to factory default without any password or passcode (hard reset).

 

How to Unlock or Fix or Bypass or Solutions for SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) forgot password code or security lock screen pattern or pin (lost password)?

We never know when our SAMSUNG GALAXY A40 will be away from us or lost or stolen, that is why we have to always activate security protections to secure all data and applications inside this phone. This protections will make unauthorized people not able to access our private data. This phone already have fingerprint at back side of body, we need to register our finger several time to make SAMSUNG GALAXY A40 recognize to unlock. We also can use face unlock recognizing with 25 megapixel selfie camera to unlock. After we register first lock system, SAMSUNG GALAXY A40 will also ask for secondary protections, we can choose screen lock pattern or password pin protections. The problems will be happen when we forgot security answer or fingerprint can not unlock, what should we do?

 

Do not worry because we can unlock or bypass forgotten screen lock pattern or password pin protections at SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) use registered Google account. But please note, we have to remember our Google account username and password, because new Samsung smartphone with latest Android version already implement FRP (Factory Reset Protection). FRP is important to secure our phone when it is stolen or lost. Android will ask for previous same Google account username and password after finish performing hard reset. Therefore we have to remember carefully our Google / Gmail username and password. We also recommended to activate or create SAMSUNG ACCOUNT at SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM), because it can help us to bypass forgotten security protections.

HARD RESET SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) WHEN FORGOT PASSWORD / PATTERN (SCREEN LOCKED):

When SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) turn ON but the screen locked then follow this steps: 

  1. Mare sure the battery is not empty or more then 50%
  2. When Screen ON but locked, please press and hold POWER BUTTON + VOLUME DOWN button about 5 seconds until the screen off
  3. When the screen off, please directly continue press POWER BUTTON + VOLUME UP button about 4 seconds and release all button
  4. Then you will go to recovery button, choose Wipe data / Factory Reset, then all data will be wipe or the operating system will be reformat to factory default
  5. Please note, this process need us to use previous Google account for authentication after hard reset finish

 

Please note, some update version of Android will not run with Google account for unlock. Therefore we suggest to activate or sign in Samsung Account at this phone to restore forgotten protections when we can not remember the answer.

 

What is BACKUP PASSWORD / BACKUP PIN at SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM)  ?

This is the way to help for unlock or bypass forgotten security protection at SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM). Although we are sure about our security protection, but sometime we may forget about the right answer. Please note, when we give security protection at our SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM), it also give step to put our own PIN / PASSWORD as BACKUP PASSWORD / PIN. This backup PIN use to bypass or unlock forgotten security code later. Use above steps to unlock forgot password or screen lock pattern security protection using Google account or Gmail username and password.

 

Is That Any Secret Code for Doing Format SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) ?

We can try to use secret code for doing hard reset SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) is *2767*3855#. But please remember to always be careful typing that code, because the SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) will do hard reset and remove all data also installed applications.

 

How to Format or Erase Phone Memory at SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) ?

There are two phone memory type at SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM), one is internal memory and the other one is external memory. If we want to format internal memory phone then we have to do hard reset or reformat the operating system of SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) as well. Please use menu setting to do hard reset or reformat using #option 1 above, but make sure to give checkbox mark at Erase Internal SD card / Internal storage. Then it will reformat the factory default operating system and remove or erase any data inside internal memory.

To reformat or wipe or erase all data at external memory, we can use menu Setting > Storage > Erase Internal Storage / SD Card. Please always make sure all data has already backup before reformat or wipe everything, because it is hard to recover formatted / wiped data at internal or external storage.

 

How to Make Battery of SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) Stronger, Life Longer and Not Fast to Drain ?

This phone have standard battery with 3100 mAh. For standard activity, SAMSUNG GALAXY A40 can work full one day. But if we are have user who watch movie or playing games several hours continuously, then SAMSUNG GALAXY A40 (SM-A405F / SM-A405FN / SM-A405FM) battery will not enough. This phone use non removable battery, therefore we can not replace with bigger capacity. However, we should do some adjustment to make SAMSUNG GALAXY A40 battery work more longer by reduce screen brightness as low as possible. We also have to disable all not use connections like GPS or Bluetooth or Wifi or NFC. If some applications want to tag locations, then we can try to activate GPS battery saving mode from menu Setting > Location.

The information from this page describe about how to do soft reset on a samsung a40. If you need another resource for hard reset, use search function at this homepage or find from our related posts.