Tips and tricks to fix ASUS ZENFONE 7 PRO ZS671KS problems. The product model code is ZS671KS, ASUS_I002DD. Pro version of Zenfone 7 with 5G data broadband and also have dual simcard slot standby together. Both front and rear body covered by glass and rounded with aluminium frame. The screen use Super AMOLED 6.67 inches width Full HD+ at 1080 x 2400 pixels.

ASUS ZENFONE 7 PRO ZS671KS powered by fast gaming processor with Qualcomm SM8250 Snapdragon 865+ and supported by Adreno 650 fast graphic rendering. The first operating system use Android 10.0 with ZenUI 7. Some users get issues with ASUS ZENFONE 7 PRO ZS671KS hardware or software, we will try to give more solutions, reviews and information about how to solve ASUS ZENFONE 7 PRO ZS671KS troubles at community.


What are Advantages of ASUS ZENFONE 7 PRO ZS671KS Specifications and Features:

  • GSM 3G HSDPA with 4G LTE and 5G, dual sim
  • LCD 6.67 inches, 20:9 aspect ratio
  • Internal memory 256 GB with 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 Triple with Motorized flip-up for Selfie photography
  • Processor Octa-core 1×3.1 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 PRO ZS671KS hang or not responding or malfunctions or stuck or freezing or bricked ?

ASUS ZENFONE 7 PRO ZS671KS use 256 GB internal storage with external memory slot available at dedicated slot for MicroSD or McroSDXC. With this big internal memory, we can install many games and applications from Google Play Store like Facebook, WeChat, Whatsapp, Tiktoks, Zoom and some other more. This phone also able to play all 3D HD games.

But we also have to know that some apps inside Google Play Store may contain viruses or malware, mostly new or not famous application. They can make some troubles at our ASUS ZENFONE 7 PRO ZS671KS such as become slowly or stuck or hang or bricks or LCD touch screen not responsive. We need to read many user reviews if we must install new or not famous 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 PRO ZS671KS 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 PRO ZS671KS ? 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 PRO ZS671KS?

ASUS ZENFONE 7 PRO ZS671KS has big RAM as 8 GB for multitasking. some users will not easily get troubles with the performance. But sometime installed apps may 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 PRO ZS671KS 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 PRO ZS671KS 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.


Choose Good Antivirus For ASUS Android Smartphone


How to backup data or Contact at ASUS ZENFONE 7 PRO ZS671KS?

MicroSD can be use for backup our data from internal memory by using Android file manager and copy all important to data external storage. 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 PRO ZS671KS 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 PRO ZS671KS with Software Menu :

  1. Make sure the battery is charge properly
  2. Turn on ASUS ZENFONE 7 PRO ZS671KS 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 PRO ZS671KS
  6. The ASUS ZENFONE 7 PRO ZS671KS will continue the step until ready to use in clean factory default.



hard reset asus zenfone 7 pro zs671ks

#Option 2, Hard Reset ASUS ZENFONE 7 PRO ZS671KS 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 PRO ZS671KS
  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 PRO ZS671KS, 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 PRO ZS671KS 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 PRO ZS671KS, 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 PRO ZS671KS forgot password code or security lock screen pattern or pin (lost password)?

This phone has triple camera at back side body with various functions. For wide we use 64 megapixel, for telephoto 3x zoom we use 8 megapixel, and for ultrawide as 113 degree we use 12 megapixel. All camera can take good photos videos because Qualcomm SM8250 Snapdragon 865+ AI give better image processing. We need to secure all private photos videos from unauthorized people when ASUS ZENFONE 7 PRO ZS671KS away from us or lost or stolen.

Fingerprint is located at left side body. We need to register our finger several time to make it recognize for unlock. Front camera is flip-up use same with rear camera. We can be use it for face unlock recognizing. We need to choose secondary backup protection like screen lock pattern or password or pin, because ASUS ZENFONE 7 PRO ZS671KS fingerprint or face detection can not work after finish reboot or soft restart. The problems will start happen when we can not unlock this phone with secondary protection 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 PRO ZS671KS 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 PRO ZS671KS?

There is no secret hidden code for ASUS ZENFONE 7 PRO ZS671KS 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 PRO ZS671KS (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 PRO ZS671KS 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 PRO ZS671KS.


How to make ASUS ZENFONE 7 PRO ZS671KS Run More Faster or Fix Slow Performance Problems ?

By design, ASUS ZENFONE 7 PRO ZS671KS 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 PRO ZS671KS RAM and processor resources will be insufficient and become slowly.

We have to uninstall some not use applications from ASUS ZENFONE 7 PRO ZS671KS to make this phone run more faster. If we want to make our ASUS ZENFONE 7 PRO ZS671KS 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 PRO ZS671KS?

There are two phone memory type at ASUS ZENFONE 7 PRO ZS671KS, 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 PRO ZS671KS 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 PRO ZS671KS Android Version ?

This phone already use latest version of Android, ASUS ZENFONE 7 PRO ZS671KS 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 PRO ZS671KS Stronger, Life Longer and Not Fast to Drain ?

5000 mAh is use at ASUS ZENFONE 7 PRO ZS671KS for support longer usage time. But if we use this phone several hours continuously, then 5000 mAh still not enough. We need to do some adjustment when we want to make ASUS ZENFONE 7 PRO ZS671KS battery work more longer. Please disable all not use connection like NFC or GPS or Bluetooth or Wifi. Please make LCD screen brightness as low as possible for save battery power.