ZenFone 4 Max (ZC554KL) VO LTE Settings

[hayyam]

Please tell us some basic information before asking for help:
Model Name: ZenFone 4 Max (ZC554KL)
Firmware Version:
Rooted or not: NOT
Frequency of Occurrence: ALWAYS
APP Name & APP Version (If your issue relates to the app): Outlook and SMS
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Hi All
Could someone help me how can i find this VO LTE settings in Zenfone 4
I shouldn't be so difficult/hard to find?

[hayyam]

Dear Christine
I wanna enable/disable VO-LTE in my phone. And i am looking the settings of VoLTE...Where it is?
I found it i think...
My Preferred Network is 2G/3G/4,5G now (VolTE is active)
If i change Preferred Network to 2G or 3G Volte is disappearing...
My sim carrier is Vodafone
What is my problem is: Sometimes I encounter a call corrupt/cut. While i am sending a call or getting a call; the call cutting off in 5 scnds suddenly.
I am searching the reasons...may be it is VoLTE ?

[Christine_ASUS]

Hi hayyam
Thank you for your asking. I suggest the VoLTE is irrelevant with the 5 seconds corrupt/cut because fundamentally VoLTE is a function to optimize the calling quality.
Kindly try some stay-at-home troubleshooting tips below:
1. Please try to enter "Safe Mode". Does the toggle appear?
# How to enter and exit "Safe Mode"
https://www.asus.com/support/FAQ/1005163/
2. Also, please try "the Factory Reset" 
Settings>System>Reset options>Erase all data(factory reset)
Please note that once the Factory Reset is completed, all data, apps, settings and personal information will be deleted.
3. If the issue remains the same, please contact ASUS repair center in the country of your residence: https://www.asus.com/support/Service-Center-All-Countries/
If it is impossible to access the service center during Covid-19 period, please try Call us: https://www.asus.com/support/CallUs