Installing Apps on SD card?

aau_99aau_99 Level 1
edited December 2020 in ZenFone Max Series

Please tell us some basic information before asking for help:

  1. Model Name: ZC520TL
  2. Firmware Version:US_14.14.1808
  3. Rooted or not: NO
  4. Frequency of Occurrence: NON
  5. APP Name & APP Version (If your issue relates to the app):

In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.


My 2 years old Zenfone 3 Max running out of storage space (80% used) which causing the phone would not perform properly with notification on some common Apps like Gmail, Wechat and lately even Whatsapp...etc.

I am wondering whether installing a SD Card can solve this problem, I know starting Android 6 some phone can use the SD card as "extension" of the on-board storage that can install Apps on it.

Anyone knows for sure? Any help will be much appreciated!



  • edited November 2020

    Hi aau_99

    Thank you for your asking. I just checked my device ZC520TL in Android 8 TW-15.03.1810.194, the device can use SDcard as internal storage. Your device is now in Android 7 US-14.14.1808, you may borrow a sd card and try first. If the sd card can not be used, you can upgrade your device to Android 8.

  • Thank you for your reply, I did tried over the weekend, it does not work as Internal Storage. May I know how to upgrade to Android 8? last time I check this forum (some month ago😅) Asus only provide a un-supported version, it's still true?

    -Thank again for your help🤝

  • Hi aau_99 

    I'm not sure which un-supported version you mentioned. May I double confirm weather your current firmware version is US-14.14.1808.121 or not? If it is, please backup your data and log out your google account. Then, download the firmware file US-15.14.1810.14 into the root directory, aka the outermost place, of internal storage from our official website. Reboot. Tap the system update notification. After the system update is complete, you may perform the Factory Reset to optimize the update process.

    # ZenFone 3 Max (ZC520TL) firmware download spot

    #Update Guide

  • Thanks again, the firmware version is correct. Never mind about the un-supported version comment, it was posted in your old Zentalk forum.

    I will take a look of the instruction and find the time to venture this task in next few days.

    Have a great day !🙏

  • aau_99aau_99 Level 1
    edited November 2020

    Hi Christine_ASUS,

    I ran into a problem when I try to backup my phone:-

    1. I deleted a old (few days old) backup file from my Google Drive, so I thought I could create a new and fresh backup file that I could use when I do the factory reset in the process of upgrading above mentioned Firmware upgrade,
    2. When I go to Settings -> Backup & reset -> Backup account -> Choose backup -> nothing happened (Fig 1)
    3. When I go to Google Drive App -> Backups -> it indicated that my device is not backed up (Fig 2) the WhatsApp data backed up all right.

    Could you please guide me how to get (manual) backup to work again? in case you like to know :- ZenUI ver.

    Many thanks again !

  • edited November 2020

    Hi aau_99

    For Android 7 backup guide, kindly refer to the link below


    1. Please ensure that the device is under stable WiFi during the backup process.

    2. Kindly try add/change another google account

    3. It will take a while for the backup process, please check your google account one day after

  • Hi Christine_ASUS,

    I've read and done all those mentioned in the guide yesterday, unfortunately, I still do not see a backup file in my Google Drive, do you have any other suggestion to do manually device backup as all other Google services like contacts, Calendar, Gmail.... were able to sync except that the device setting (most importantly wifi password) is missing out.

    Thanks and await for your reply.

  • Hi aau_99

    May you provide me a video of your backup process for further checking?

  • aau_99aau_99 Level 1
    edited November 2020

    Hi Christine,

    Sorry but its kind of cumbersome for me to take a video to show you the backup process...let me describe how that process did not work.

    Ever since I got this phone, I never done a system backup cause I did not need to do a factory reset, so I do not know how Google auto backup process work in the background, all I know that there were a file in my (same account) Google Drive Backup folder alongside with WhatsApp backup file.

    As explained in my last post, I deleted that file from Google Drive I thought it will automatically re-create one when I do BACKUP & RESET.

    Here are steps I toke when I try to do BACKUP & RESET:-

    1. Go to SETTINGS ->
    2. Scroll down to BACKUP & RESET ->
    3. Tap on BACKUP & RESET ->
    4. It shows Fig 1 screen ->
    5. Tap on BACKUP ACCOUNT ->
    6. A pop up screen asked to choose backup account
    7. Tap on that account, it goes back to Fig 1 screen....nothing happened
    8. I immediately go to Google Drive Apps (in my phone)
    9. Tap on BACKUPS
    10. It shows Fig 2

    That is all I did, as far as WhatsApp Backup, it's very straight forward:-

    1. Go to WhatsApp SETTINGS
    2. Scroll down to and tap on CHAT BACKUP
    3. Tap on BACK UP
    4. It immediately created a backup file in my Google Drive Backup folder

    I hope this will help you investigate, after almost 26 hours since I (did) the backup, the file still not been created in Google Drive.

    If you have a test unit in your lab, please try delete the backup file in Google Drive and see whether it will create a new one and how long it will take for that to happen.

    I am patiently waiting for your positive reply with big thanks !


    PS - Please refer Fig 1 & 2 to my following post, for some reason I can not upload images (only 38KB and 708KB) in this post. Sorry!

  • Fig 1

    Fig 2

  • Hi aau_99 

    Thank you for your asking. If you can not backup via Settings>Backup & reset, please try

    (1) USB cable

    (2) Backup app like ASUS Data Transfer..

  • aau_99aau_99 Level 1
    edited November 2020

    Hi Christine,

    Thanks for the reply.

    1. USB Cable -> Does it also transfer System Settings like wifi password?
    2. ASUS Data Transfer App -> Is it only work from one Zenfone to another Zenfone, if so, I am backup and restore to same phone, how does it work?

    I was hoping that ASUS would have a utility program that can backup and restore system level data, that makes switching phones much easier and safer factory reset.


This discussion has been closed.