Option 1

1. Go to Phone Settings

2. Next point Recovery and reset

3. Then click on Reset settings

4. Click Reset and agree to the loss of all personal information
5. After the phone restarts, the reset can be considered complete

Option 2

1. First turn off the phone
2. Click Volume(+) + Inclusion for a while
3. Release the pressed buttons when we see an Android image or brand logo on the screen
4. To enter Recovery mode, press Inclusion
5.Pressing a key Volume Down in the menu select wipe data/factory reset and confirm by pressing Nutrition

6. Then in the next menu level select Yes--delete all user data by pressing the key Volume Down and confirm the choice by pressing Nutrition

7. Finally, to complete the reset and reboot, confirm the reboot system now menu item

8. Reset process will complete after restart

Asus Zenfone 3 ZE552KL factory reset

Attention!

• After performing a hard reset, all personal data and applications that are in the phone memory will be lost.
• Images and videos for some activities may not exactly match your phone model.
• For the reset to complete correctly, the battery needs to be charged to about 80%.

Every owner of ASUS Zenfone Max ZC550KL wants to reflash it, change it, so the question: how to update ASUS Zenfone Max is not surprising. Each person may have their own reasons for this. We won't go into them. But let's figure out how to update the phone.

Flashing via update

Initially, you should download the official firmware for your phone. It must match the region (Build number: WW-WW, CN-CN). If you select the wrong region, you may not wait for updates. The firmware that has been downloaded should be placed on the memory card and turn off the device. Next, you should go into Recovery; to do this, you need to press the volume down + the power button. Hold down until the gadget turns on. When this happens, release the power button one by one, and then release the volume. We get into the Recovery settings, where we select updating the system from the firmware program that is waiting on the SD card. After that, we wipe, the smartphone reboots, and you can use the new firmware.

Flashing via Asus Flash Tool

This option is perfect for those who use the Chinese version, but want to switch to the international one. Before you begin, you should download the required files to your personal computer. So, download the firmware ZC550KL_V12.8.10.56_M3.1.33_WW or ZC550KL_V12.8.2.72_M3.1.27_WW. Install the ADB and ASUS_Android_USB_drivers_for_Windows drivers (this is necessary to ensure communication between the smartphone and the computer). Then you should log into the AFT program as an administrator. Select the model and firmware file. Next, you should turn off the phone and enter it into bootloader mode (volume + power on). We use a regular cable to connect to the computer. Click on the serial number and Start. After the firmware process has completed successfully, disconnect the gadget from the computer. Press “power” for a long time to restart it. The first time the reboot process will take longer than we are used to.

In general, at first glance there is nothing complicated about this. And in practice you will see this. A little attention and logic should be applied and you can be confident in the quality of the results obtained.

No firmware will protect your phone from the consequences of exploitation

But we must not forget that no modern firmware can provide high-quality protection for the device. This will have to be taken care of additionally. Modern accessories allow you to do this without problems. Buying a case for ASUS Zenfone Max ZC550KL is the least you can do for your “friend”. Their wide variety only encourages purchasing. This can be an overlay, a bumper, or a book cover. The last option is considered to be the most optimal. As an addition, the accessory will also embellish your smartphone due to its design, making the appearance unusual and special. If you don't want to make any additions to your look, a silicone case is perfect. It is durable, reliable and transparent, all your needs are met. Its cost is minimal, and its beneficial properties are maximum.

Asus offers reliable and feature-rich smartphones with various focus points. The main focus of the Max series is maximizing battery life. The third model in the ZenFone 3 Max series is definitely a big step forward. The device is widely accepted and is a viable option in the mid-range category.

As chance shows all too often, you are more likely to win the lotto twice in a row than to find a smartphone without any problems. Even though the Taiwanese manufacturer has created a stable device with reliable hardware, users have reported various issues. In this article, we have prepared a list of the most known problems and their possible workarounds.

How to fix Asus ZenFone 3 Max known problems

SIM unavailable error

Many of you have encountered a problem with your SIM card. According to user reports, after updating the phone's firmware, the device stopped recognizing the SIM card. This, as you know, has led to a major problem as you cannot make or receive calls in this state.

Turn off your phone, remove and reinsert the SIM card.
Reboot your device.
Roll back your firmware to the previous version.
We encourage you to report the problem to your phone supplier if there is any sign of a hardware problem.

WiFi turns off unexpectedly

There are some minor problems that we can ignore and there are some that cannot be tolerated. Wi-Fi is a must for every smartphone user, and the ZenFone 3 Max seems to have its faults in this regard. According to some users, the wireless connection is unstable and disappears from time to time. The phone allegedly turns off for no apparent reason and the user is presented with a “WiFi connection error” message.

There is a list of common workarounds, but we recommend updating the firmware first. If you are not notified of an update, you can automatically search for updates.

Go to settings.
Click "About".
Select System Update.
Click Check for Updates.
Past Wi-Fi problems were solved this way.

However, if the problem is not resolved, you can check these workarounds:

Reset network settings.
Reboot your router.
Use recovery mode to clear cache data.
Reset your phone to factory settings.

Camera shutter sound won't turn off

Many of us love that old-fashioned shutter sound found in digital cameras. On the other hand, many of us don't like it. This is personal preference. However, it appears that the ZenFone 3 Max has some kind of bug that prevents you from turning off the shutter sound.

We searched for solutions and found these possible workarounds:

Reboot your device.
Update your system.
Reset your camera settings.
Clear cache and data from third-party apps that use the camera (Snapchat, Instagram, Skype).
Try running in Safe Mode to see if the problem still exists.

1. 1. To do this, press the Power key and press and hold the Power Off button on the screen for a few seconds.
   2. You should see a pop-up message saying “Do you want to restart your phone in Safe Mode?”
   3. Confirm your choice and try the camera in safe mode.
   4. Restore your phone to factory settings.

"Battery Usage Unavailable" Error

Battery issues seem to be relentless, even on devices that focus on the battery as the main feature. Many users have reported a common error on Android devices. Namely, they cannot check battery consumption because all battery data is not available. Even though it looks like a common error, it requires a lot of time and patience to resolve this issue.
Namely, you will have to recalibrate your battery. In this way, the system software will restore data monitoring and your statistical data will be available. You can do this by following the instructions below.

⇒

Drain your phone completely until the phone turns off.
Turn it back on and let it turn off.
Connect your phone to the charger and, without turning it on, charge it until the on-screen indicator says "100 percent."
Unplug the charger.
Turn on your phone. If the battery percentage is not 100%, reconnect the charger until the user interface shows the battery is 100% full.
Turn off your phone and restart it. If the battery is still not 100% full, connect the charger and charge it until the battery is 100% full.
Repeat this cycle until it reads 100 percent.
Now remove the battery until the phone turns off by itself.
Fully charge the battery again. Do not turn on the device or interrupt charging.

So you should recalibrate the battery and fix this problem. However, be aware that this is a long workaround. Also, you should not repeat this too often as it may affect the battery's performance and reduce its longevity.

No ringtone, alarms or notifications

Users have reported various issues related to system sounds, both media and notifications. According to these users, all sounds, including alarming ones, are silent. You can manipulate the device's sounds through the media center or with the built-in audio wizard.

All the information provided led us to the conclusion that this was either an error or a hardware malfunction. If you have recently installed a firmware update, this is the likely cause for this issue. On the other hand, we often encountered the Audio Wizard problem.

So, try these steps and hope for the best:

Install the latest firmware.
Reboot your phone.
Try restarting your phone in safe mode.
Go to Audio Wizard and select Smart Mode instead of Outdoor.
Restore factory settings.
But, if the sound does not work - the only thing you are here after this, contact your phone supplier about this problem.

Problem connecting to mobile connection

It seems like dual SIM support is often a disadvantage rather than an advantage. Namely, ZenFone 3 Max users reported problems with mobile data connection when switching between SIM cards.

We have some troubleshooting for this issue, but it's best to focus on one card at all until the issue is resolved with upcoming update releases.

These are the workarounds you should try:

Reboot your phone.
Remove and reinsert both SIM cards.
Go to Settings > Mobile Network and set your preferred mobile data (LTE or 4G)
Restore your network settings.
Restore your device to factory settings.

As you have already seen, most problems are related to the firmware. In some cases, updates that fix one problem create several others. So, if you are experiencing some of these issues and all the workarounds have failed, updating the firmware is the only solution. Or downgrading the firmware.