How to Easily Master Format ASUS ZENFONE 4 / 4S with Safety Hard Reset?

Solutions for troubleshoot ASUS ZENFONE 4 / 4S problems. There are many option for us to find Android smartphone, start from cheap until expensive smartphone. But now we have alternative for find cheaper price Android smartphone but have better performance as we know ASUS ZENFONE 4 is the answer, this is Android smartphone with 4 inches LCD screen but have Intel Atom Dual Core processor also powered with Android Jelly Bean OS, but do not worry because Asus already prepare to give update operating system to Android Kitkat as well. This phone code known as A450CG.

What are the different between ASUS ZENFONE 4 vs ASUS ZENFONE 4S? By the production time, ASUS ZENFONE 4S is appear on the market after several months of ASUS ZENFONE 4 release. The Asus Zenfone 4S have minor upgrade at LCD screen which become 4.5 inches and have light LED flash camera.

What is Advantage of ASUS ZENFONE 4 / 4S Specifications:

GSM Dual Sim On Together (GSM-GSM)
LCD 4 inches with Gorilla Glass 3 for ASUS ZENFONE 4
LCD 4.5 inches with Gorrilla Glass 3 for ASUS ZENFONE 4S
Internal memory 4GB or 8GB
External memory microSD, up to 64 GB
Main Camera 5 MP, 2592 х 1944 pixels, autofocus for ASUS ZENFONE 4
Main Camera 8 MP, 2592 х 1944 pixels, autofocus, LED Flash for ASUS ZENFONE 4S
Processor Dual-core 1.2 GHz Intel Atom Z2520
Operating system Android OS, v4.3 (Jelly Bean), upgradable to v4.4.2 (KitKat)
Battery Li-Po 1200 mAh

How to Fix or Problem Solving for Recovery ASUS ZENFONE 4 / ZENFONE4S hang or not responding or malfunctions or stuck or freezing or bricked ?

There are many applications from Google Play Store that we can choose for download. There are also some category start from Games or work also available, either free or need to purchase as what we need. But we have to know that some applications from Google Play Store are not always compatible with our ASUS ZENFONE 4. Especially this phone use Intel processor, then maybe some app developer does not have this phone for their trial. Not compatible applications can make trouble to ASUS ZENFONE 4 like hang or stuck or frozen or broken or bricks or LCD touch screen not responding. If we get this trouble, then we should have to force soft reset or force reboot to delete temporary files or cache that make problem at this phone. If the problem still happen, then we should have to do hard reset or master format. Do not forget to backup all important data before doing hard reset, because it could wipe or erase all important data from ASUS ZENFONE 4.

How to Force Shutdown orForce Soft Reset or Force Reboot or Force Restart ASUS ZENFONE 4 / 4S ?

When our ASUS ZENFONE 4 getting hang or stuck or LCD touch screen not responding, we need to force reboot or force soft reset with very easy steps by open the back case and remove the battery. Wait about 5 seconds until the phone power totally lose, then put again the battery at ASUS ZENFONE 4. Press POWER Button to turn on this phone. We also can do soft reset or restart when the phone LCD still responsive by press POWER Button for several seconds until pop-up menu appear, then choose Reboot/Restart to do soft reset or reboot process. The soft reset process is save to do anytime, because our data will keep available at this smartphone after doing soft reset.

#Option 1, Hard Reset ASUS ZENFONE 4 / 4Swith Software Menu :

  1. Make sure the battery is charge properly
  2. Turn on ASUS ZENFONE 4 smartphone
  3. Don’t forget to backup all important data
  4. Go to menu:Setting > Backup & reset > Factory Data Reset> Reset Phone
  5. ChooseErase everythingto continue and confirm you ready to do the format ASUS ZENFONE 4
  6. The ASUS ZENFONE 4 will continue the step until ready to use in clean factory default.

#Option 2, Hard Reset ASUS ZENFONE 4 / 4Swith Hardware Key Button:

  1. Make sure the battery fully charge
  2. Do not forget to backup all important data
  3. Turn off the ASUS ZENFONE 4
  4. Press and Hold together:Power Button + Volume UpButton for several seconds until text menu appear, then release both button
  5. At this text menu, choose Recovery and continue with pressPower Buttonto confirm or OK
  6. Wait until the LCD of ASUS ZENFONE 4 will show the Android Logo, continue press togetherVolume Up + Volume Downtogether then we will seeAndroid System Recovery Mode
  7. Follow the menu at LCD screen to continue Factory Reset the hard reset ASUS ZENFONE 4, useVolume UporVolume Downto navigate the Menu and pressPower Buttonto OK or Enter

How to Restore and Reinstall Clean Android Operating system / firmware at ASUS ZENFONE 4 / ASUS ZENFONE4S?

What should we do when we need to reinstall the clean factory default operating system or firmware of ASUS ZENFONE 4? First we have to know that the clean factory default ASUS ZENFONE 4 Android operating system already saved inside this phone ROM. Therefore we do not need to connect anything when we want to reinstall the operating system. Just follow the hard reset or master format steps above, then the factory default operating system will be reinstall automatically. When should we do reinstall the operating system? Doing reinstall is recommended when we fine our ASUS ZENFONE 4 start to act not appropriate, because doing reinstall or restore the OS will make all applications and setting back to factory default.

How to Unlock or Fix or Bypass or Solutions for ASUS ZENFONE 4/ 4Sforgot password code or security lock screen pattern or pin (lost password)?

We can choose some options to give security protect at ASUS ZENFONE 4. We are always recommended user to use screen lock pattern or you also can choose some other like password pin protections. For us, using screen lock pattern is faster to open with less wrong input. But the protection will become trouble when we forgot the answer. What should we do when we forgot the security protection? Do not worry, because we can try to unlock or bypass the forgotten security protections using Google account or Gmail username and password. Try to do several time wrong answer, after that the phone will freeze or locked for several seconds. At this time, we can find Forgot Password / Pattern button to help us bypass or open forgotten security protection using Gmail account that we have already sign-in before. If we can not access Google account, then we have to do hard reset or master format with hardware button key above.

How to Improve Performance ASUS ZENFONE 4 / 4Sto make run more faster?

Dual Core phone from Inter processor already fast enough to do some standard activity using some applications. But maybe after use for several moment, the ASUS ZENFONE 4 become slowly to run or doing multitasking or move between applications at this phone. Usually this problem happen because there are too many applications running in the background. Some applications will keep running in the background after we install from Google Play Store, this is happen because that apps need to wait for update or wait for some command. The applications will need some memory and processor resources, when there are too many apps run together, then they will use more memory and processor resource which can make our ASUS ZENFONE 4 run more slowly. Therefore we need to uninstall some not use applications, but if we want to make ASUS ZENFONE 4 performance run faster again like new, then we have to do hard reset or master format.

Is That Any Secret Code for Doing Format ASUS ZENFONE 4 / ASUS ZENFONE4S?

There is no secret hidden code for ASUS ZENFONE 4 to make it back to factory default. Do the options above to hard reset it.

How to Make ASUS ZENFONE 4 / ASUS ZENFONE 4S Battery Work Stronger or Not Fast to Drain ?

We have to know that this phone still have limited battery capacity. Although some users still can use this phone full one day without recharge, but for some active users the battery capacity is not enough. We have to do some adjustment to make it work more stronger. First make LCD screen brightness as low as possible. We also have to disable all not use connection like GPS or Bluetooth or Wifi. Please also note that ASUS ZENFONE 4 / ASUS ZENFONE 4S battery have limit of life, after the battery reach the battery maximum lifetime, then the performance will be downgrade slowly. At this time we have to replace with original ASUS ZENFONE 4 / ASUS ZENFONE 4S battery. Please get it from official store or Asus service center. Be careful to use non original battery, because it could damage our phone.


# How to Remove Google Account atASUS ZENFONE 4 / ASUS ZENFONE 4S ?

This is Android smartphone, therefore Google account is one of important login to make this phone work will full services. However, sometime we want to remove Google Account atASUS ZENFONE 4 / ASUS ZENFONE 4S, please follow this steps:

  • Go to menu Setting > Account
  • Choose Google Account that we want to remove
  • At page menu at the top, please choose Remove Account
  • The chosen Google account will be remove or wipe or erase fromASUS ZENFONE 4 / ASUS ZENFONE 4S. This is same meaning with Logout Google Account fromASUS ZENFONE 4 / ASUS ZENFONE 4S.

# How to Wipe or Erase All data atASUS ZENFONE 4 / ASUS ZENFONE 4S ?

When we want to give this phone to someone else, we suggest to remove all data including Google account. If we want to remove or wipe or erase or clean all data fromASUS ZENFONE 4 / ASUS ZENFONE 4S, then please try to do hard reset either using menu Setting with clean data files like steps at #option 1 above or use hardware button combination key like steps at #option 2 above.

# How to Hard Reset or ReformatASUS ZENFONE 4 / ASUS ZENFONE 4S without Passcode or Password Protections ?

Using protection is recommended to secure all data at ourASUS ZENFONE 4 / ASUS ZENFONE 4S, but some users get troubles when they want to process hard reset or master format, becauseASUS ZENFONE 4 / ASUS ZENFONE 4S keep ask the passcode or password to bypass. If we get this problems, we suggest to do hard reset using hardware button combination key like steps at #option 2 above. It will reformatASUS ZENFONE 4 / ASUS ZENFONE 4S without ask any authentications or passcode.

35 thoughts on “How to Easily Master Format ASUS ZENFONE 4 / 4S with Safety Hard Reset?”

  1. Do you what mean brick mode?

    Nothing to do with device when it got bricked, though to enter droidrobot.

    The only possible way is unbrick device using a tool software like xSFTK or Manufacturing Flash Tool or others and process it with PC to out from brick mode. If unbricking process has success then enter do droidrobot to flash the device.

  2. my lockscreen problem, i have just set a pin for the password in lockscreen, but the screen lock always show “None”, why? please help me

    • Hi, please only use factory default Android lock screen that you can get from menu Setting > Security from your Asus Zenfone 4, and we assume you already use this. If you have already finish giving lockscreen by pin but your Asus Zenfone 4 still show nothing or has not locked, then you have try setup again from menu Setting > Security and please try to use screen lock pattern, give two time pattern lock with minimum 4 poin connected, mostly you will success to give screen lock pattern using this options.

    • Hi, this problems mostly happen because applications crash or bad run, therefore your Asus Zenfone 4 will become trouble and keep restart every time. Please try to remove all card, microSD card and GSM simcard, then try again to restart and wait. If your Asus Zenfone 4/4S phone still restart like before, then you have to do hard reset to factory default. First, you can try to backup all important data as possible, please put again the microSD card at right positions, because you still have little time to after finish restart your phone before it reboot by itself. After finish backup to external microSD, then release or remove that card. Then try to hard reset with steps above weather using software menu if you still can access it, or doing hard reset Asus Zenfone 5 with hardware button combination key.

    • Hi, please try to use other Android charger which have minimum 1 A current output for your Asus Zenfone 4. Because this problems usually comes from the charger itself.

  3. Hii, I forgot the app lock password of my ASUS ZENPHONE 4 A400CG . So I am not able to enable it. How could I recover this??

    • Hi, if you have activated default screen lock to protect your Asus Zenfone 4, then you can try to unlock using Google account. Please turn on your Asus Zenfone 4, when the LCD screen ask for unlock answer, then please try to give several time wrong answer continuously until your phone locked 30 seconds, at this time you can find Forgot Password button, press this button then you can type your Gmail username and password that you have been signed-in before. Please make sure your GSM internet data connection is active while unlock using Google account, because your Asus Zenfone 4 will ask for authentications to Google server. If you can not access your Gmail account, then you have to do hard reset using hardware button combination key like steps at #Option 2 above.

  4. i tried the hard reset but it doesn’t have recovery option.

    choices are REBOOT DROIDBOOT
    POWER OFF.. can anyone help me pleasssseeee thanks

    • Hi, please choose Factory Reset to finish your hard reset procedure and reformat Asus Zenfone 4 with factory default operating system.

  5. Hi.i have problem with my asus zenfone only stuck at asus logo i follow your step to hard reset but it happen what would i do?i give up already.tq sir

    • Hi, if your Asus Zenfone 4 still can not boot properly (bootloop) after finish doing hard reset steps carefully, then maybe there are any other trouble that need to see more like corrupted file source because rooted or custom rom trouble. Please consult your problems to Asus authorize service center.

  6. hi, my asus zenfone 4 is showing msg that unfortunately asus launcher is stopped, had tried all options like factory reset,reboot,safe mode all,but acant fixed it all the way,please help me to fix my problem

    • Hi, usually after finish hard reset, your Asus Zenfone 4 operating system will reformat or reinstall again to factory default, therefore the applications problems like what you have now will be fix. However it will not fix it you restore any backup that contain trouble conditions. Please do hard reset one more time, then after your Asus Zenfone 4 finish reformat, then do not login to any account. Try to use it several hours. If your phone not get same trouble again, then you need to create new account to ignore automatic cloud backup restore.

    • Hi, usually doing hard reset will do the reformat process to factory default operating system from beginning to the end by itself, just try to do hard reset your Asus Zenfone with hardware button combination key. But please make sure your Asus Zenfone 4 battery is not empty while doing hard reset.

    • Hi, you should try to do hard reset using hardware button combination key like steps at #option 2 above. It will reinstall factory default operating system for your Asus Zenfone 4.

    • Hi, you have to follow steps at #option 2 above to reformat your Asus Zenfone 4 operating system to factory default using hardware button combination key.

    • Hi, maybe the battery of your Asus Zenfone 4 is not enough. You have to make sure your phone is fully charge.

    • Hi, usually after finish hard reset, your Asus Zenfone 4 will reformat to factory default, then it will work like new. If your recent button not working then maybe there are some trouble with that button itself. Or you may try to make sure by doing hard reset one more time using menu Setting.

  7. My Zen 4 is not booting up. it is also not opening the recovery mode or fastboot mode. when i am connecting usb cable its ids showing a USB logo. i have tried power button + volume down, power button + volume up, none of them takes me to recovery mode. So i was thinking if there is a software which can take me directly to recovery mode without pressing any buttons. and FYI after connrcting the usb cable after some time the USB logo bar turns red from white.

    Thank you

    • Hi, maybe some other community have alternative software to reflash your Asus Zenfone 4 factory default operating system, but it is not recommended for all users. Therefore please contact some professional service point or go to Asus authorize service center for repair your phone with correct procedure.

  8. after factory reset ,at setup wizard unfortunately Google service popup was coming n doesn’t proceed to further steps ,plz help me

    • Hi, usually after finish hard reset, your Asus Zenfone 4 operating system will be restore back to factory default. At this time your phone will back like new again. Maybe the error comes because you have restored cloud backup from Google account, and some state still have troubles. Please try to hard reset again one more time, and do not login with any previous Google account. Try to use it several time to see the problems still happen or not.

    • Hi, maybe some apps stuck. Please do hard reset using hardware button combination key like steps at #option 2 above to reformat your Asus Zenfone 4 operating system to factory default.

    • Hi, please try to use hardware button combination key to reformat your Asus Zenfone 4 operating system to factory default like steps at #option 2 above.


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