Tips and tricks to fix ASUS ZENFONE 7 ZS670KS problems. This phone has product model code as ZS670KS and ASUS_I002D. It is use Super AMOLED has 6.67 inches LCD with Full HD+ at 1080 x 2400 pixels. Front and back body covered with glass and protected by Corning Gorilla Glass 6 at front screen and Corning Gorilla Glass 3 at back body, rounded by aluminium frame.

ASUS ZENFONE 7 ZS670KS use Android 10.0 as factory default operating system together with ZenUI 7 Asus user interface. This phone use flagship processor Qualcomm SM8250 Snapdragon 865 with dedicated GPU (graphic processor unit) Adreno 650 for fast graphic rendering performance. Some users get issue with software and hardware at ASUS ZENFONE 7 ZS670KS. We will try to give more solutions, reviews and information about how to solve ASUS ZENFONE 7 ZS670KS troubles at community.


What are Advantages of ASUS ZENFONE 7 ZS670KS Specifications and Features:

  • GSM 3G HSDPA with 4G LTE and 5G, dual sim
  • LCD 6.67 inches, 20:9 aspect ratio
  • Internal memory 128 GB
  • RAM 6 GB or 8 GB RAM
  • Main Camera : Triple 64 MP f/1.8 (wide) + 8 MP f/2.4 (ultra wide) + 12 MP f/2.2
  • Main Camera Features Phase Detection Autofocus (PDAF), LED flash
  • Front Camera Flip Motorized Triple for Selfie photography
  • Processor Octa-core 1×2.84 GHz Kryo 585 & 3×2.42 GHz Kryo 585 & 4×1.8 GHz Kryo 585
  • GPU Adreno 650
  • Operating system Android 10.0
  • Battery Non-removable Li-Po 5000 mAh



How to Fix or Problem Solving for Recovery ASUS ZENFONE 7 ZS670KS hang or not responding or malfunctions or stuck or freezing or bricked ?

This is high-end flagship smartphone with Super AMOLED screen type for better color view. It has big internal storage as 128 GB. We also can use MicroSD / MicroSX external memory slot for extend the storage. Android operating system and some factory default applications already installed at internal memory. But we still can install more paid or free apps from Google Play Store.

Please be careful when install new or not famous applications, because some of them may contain viruses or malware that can make troubles at our ASUS ZENFONE 7 ZS670KS like become slowly or stuck or hang or bricks or LCD touch screen not responsive. Please read many user reviews before install that kind of apps. These bad apps usually will not get Verified By Play Protect information from Google Play Store.

What should we do? First we have to try remove temporary files and caches from RAM by doing soft reset or reboot. After our phone can start again, then try to install free antivirus from Google Play Store like AVAST or NORTON, it will scan all installed apps and data inside this phone, also will give safe setting recommendation to make our ASUS ZENFONE 7 ZS670KS become more secure. If still can not work, then we have to do hard reset.

For safety reasons, please do not install any unknown APK files, because it is very easy to make our phone getting trouble. How to remove Google account / Gmail account from ASUS ZENFONE 7 ZS670KS ? Doing this procedure to hard reset or master format will remove all account including Google account.


How to Force Shutdown or Force Soft Reset or Reboot or Restart ASUS ZENFONE 7 ZS670KS?

ASUS ZENFONE 7 ZS670KS has two options of RAM with 6 GB or 8 GB. Many users can run this phone without troubles. But if some installed apps crash, then our phone will start run not normal or hang or LCD touch screen not responsive. We have to remove temporary files and caches. Please press and hold POWER button until ASUS ZENFONE 7 ZS670KS shutdown or turn off by itself. Please try to press POWER Button and Volume Down if not work. After this phone 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 ASUS ZENFONE 7 ZS670KS 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.


Free Antivirus For ASUS Android Smartphone


How to backup data or Contact at ASUS ZENFONE 7 ZS670KS?

ASUS ZENFONE 7 ZS670KS basexternal memory storage slot. We can use MicroSD for backup all important data using Android file manager. We also can connect this computer using USB data cable, connect to computer and read files inside this phone using computer file manager.

If our ASUS ZENFONE 7 ZS670KS 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.


Please note: These options bellow may not work for some devices because of firmware update version or hardware troubles or some other possibilities.

#Option 1, Hard Reset ASUS ZENFONE 7 ZS670KS with Software Menu :

  1. Make sure the battery is charge properly
  2. Turn on ASUS ZENFONE 7 ZS670KS smartphone
  3. Don’t forget to backup all important data
  4. Go to menu: Setting > Backup & reset > Factory Data Reset > Reset Phone 
  5. Choose Erase everything to continue and confirm you ready to do the format ASUS ZENFONE 7 ZS670KS
  6. The ASUS ZENFONE 7 ZS670KS will continue the step until ready to use in clean factory default.



hard reset asus zenfone 7 zs670ks

#Option 2, Hard Reset ASUS ZENFONE 7 ZS670KS with 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 7 ZS670KS
  4. Press and hold Volume Up button (do not release and continue to no.5)
  5. Press and hold Power button (no.4 still continue press and hold), so now we hold Volume Up Button + Power Button together
  6. Wait until vibrate appear at ASUS ZENFONE 7 ZS670KS, then release Power button (do not release Volume Up button)
  7. If we see Logo appear at LCD screen, then release Volume Up button (release all button now)
  8. Wait until FASTBOOT MODE appear
  9. At this text menu, use Volume Down Button to choose Recovery Mode and continue with press Power Button to confirm or OK
  10. Wait until the LCD of ASUS ZENFONE 7 ZS670KS will show the Android Logo with error text, continue press and hold POWER button, after that continue press and release one time Volume Up, then we will see Android System Recovery Mode menu
  11. Follow the menu at LCD screen to continue wipe data/factory Reset for hard reset ASUS ZENFONE 7 ZS670KS, use Volume Up or Volume Down to navigate the Menu and press Power Button to OK or Enter


How to Unlock or Fix or Bypass or Solutions for ASUS ZENFONE 7 ZS670KS forgot password code or security lock screen pattern or pin (lost password)?

This phone have unique front camera, because the front camera are motorized flip-up use same back side camera. Therefore we have same triple front camera and rear camera. This camera have good performance for take photos and videos. We will have many private photos videos. Please secure all important files from unauthorized people when ASUS ZENFONE 7 ZS670KS away from us or lost or stolen.

We recommended to use fingerprint, because it is fast and accurate to use. Front camera also can be use for face id recognizing, but because it use motorized flip-up, maybe we have to think again to use motorized camera always work just for unlock. However, after first protection finish register, we have to choose secondary protection like screen lock pattern or password for backup, because ASUS ZENFONE 7 ZS670KS fingerprint or face detection will not work after finish reboot or restart. The problems will start happen when we can not unlock this phone or fingerprint can not unlock or forgot security answer. What should we do?

If we can not access or bypass security protections, then we need to do hard reset or master format using hardware button combination key to reformat or hard reset. ASUS ZENFONE 7 ZS670KS already use latest Android version, therefore this phone already protected with FRP (Factory Reset Protection). This functions is very important to secure our phone after finish hard reset or master format, because it will ask for previous Google account username and password to make sure that this phone is belongs to us. Therefore we will see Verify with previous Google Account page after finish hard reset.


Is That Any Secret Code for Doing Format ASUS ZENFONE 7 ZS670KS?

There is no secret hidden code for ASUS ZENFONE 7 ZS670KS to make it back to factory default. Do the options above to hard reset it.


How to Restore and Reinstall Clean Android Operating system / firmware at ASUS ZENFONE 7 ZS670KS (Reformat)?

This phone has been installed with Android 10.0 with several factory default applications. But after install several apps, sometime the operating system is damaged or corrupted. We have to reinstall or master format. Please note, clean and official Android operating system file source already saved safely inside ASUS ZENFONE 7 ZS670KS internal memory, therefore we do not need to copy or connect to other devices. Just follow simple steps to hard reset above, then clean factory default Android operating system will be reinstall automatically at our ASUS ZENFONE 7 ZS670KS.


How to make ASUS ZENFONE 7 ZS670KS Run More Faster or Fix Slow Performance Problems ?

By design, ASUS ZENFONE 7 ZS670KS will work with fast access for any applications, because it use Qualcomm SM8250 Snapdragon 865 processor and high speed internal memory. We have to understand that all running applications will use RAM, some apps also will run in the background to wait data update, therefore if many of them run together, then our ASUS ZENFONE 7 ZS670KS RAM and processor resources will be insufficient and become slowly.

We have to uninstall some not use applications from ASUS ZENFONE 7 ZS670KS to make this phone run more faster. If we want to make our ASUS ZENFONE 7 ZS670KS run faster again like new, then please consider to do hard reset or master format.


How to Format or Erase Phone Memory at ASUS ZENFONE 7 ZS670KS?

There are two phone memory type at ASUS ZENFONE 7 ZS670KS, 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 ASUS ZENFONE 7 ZS670KS 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 Upgrade ASUS ZENFONE 7 ZS670KS Android Version ?

This phone already use latest version of Android, ASUS ZENFONE 7 ZS670KS use Android 10.0 as factory default operating system. We still wait for new Android version withing several months later. When new major Android version release, then maybe this phone will get firmware upgrade using OTA (over the air). Just wait for further information.


How to Make Battery of ASUS ZENFONE 7 ZS670KS Stronger, Life Longer and Not Fast to Drain ?

Big battery is one advantages of ASUS ZENFONE 7 ZS670KS. It use 5000 mAh non removable battery. The battery has fast charging technology. We can use this phone more then one day for normal activity. If we want to use ASUS ZENFONE 7 ZS670KS battery longer for playing games or watch movie several hours continuously, then please do some adjustment like make LCD screen not too bright and disable all not use connections like GPS or Bluetooth or NFC or Wifi.