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Explore vivo
vivo Visual Creator
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Welcome to vivo Support
app lock
forgot lock screen password
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Top questions
System Settings
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Fingerprint
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Dynamic light
Shortcuts & accessibility
Privacy & app encryption
Android Auto
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Data Usage
Hotspot & tethering
Internet
Products
V50
X200 FE
System Features
Camera
EasyShare
Albums
Common Issues
App crash/no response/stop running
Charging & Heating & Power consumption
Call & Network & Connectivity
Lag
Hardware
Battery
Sensor
Infrared remote control
SIM card/SD card
Home screen& Lock screen
Widget
Lock screen settings
Home screen
Operating System
ROOT
Log
vivo Privacy Terms for After-sales Service
vivo Privacy Terms for After-sales Service
Accounts & Google
vivo account
Why is the SIM toolkit gray on my phone?
How to turn on VoLTE?
How to turn on 5G preferred?
What should I do if SIM card cannot be recognized?
How to turn off 4G+ network?
Can I remove or insert SIM and SD card when my phone is on?
How to enable VoLTE (HD Voice call)?
What is SA?
Where can I find the SIM card Toolkit?
Can I change the name of SIM card?
Difference between ViLTE and VoLTE
Are 5G signals harmful to humans?
Does the SA mode make networks faster than NSA mode?
How to turn off VoWiFi (WiFi Calling)？
What is SIM Card PIN and PUK Code？
What is Dual-Mode 5G?
Data network is automatically disconnected
Introduction to EDGE
How to disable my SIM card?
Why is the signal of only one SIM card displayed?
Can I use data network when I am on a call?
Can I make phone calls without SIM card?
What is the advantage of 5G?
Introduction to GPRS
The downloading in the background stops
How to turn off "Smart switch of data card" ?
How to turn on "Smart switch of data card"?
What does the HD sign in the status bar mean?
Does the protective case affect the phone signal?
How can I disable VoLTE?
How to set the SIM card as the default data card?
Why is the 5G signal strength different indoor and outdoor?
What is 5G?
What is the difference between NSA and SA?
What is NSA?
Does watching videos offline require data?
Introduction to GSM network
Introduction to LTE
Can a 3G SIM card be used in a 4G phone?
What may cause unstable network speed?
Why can not disbale SIM card?
Can a 4G phone be upgraded to a 5G phone?
The data card automatically switches to another card
Introduction to VoNR
How to enable VoWiFi (WiFi Calling)?
How to switch 4G to LTE?
SIM Toolkit is always showing error
What should I do if the data network speed is slow?
Unable to watch videos with data network
Some apps cannot connect to network. What should I do?
Data networks switch automatically
Does blocking the antenna affect signals?
What is 4G?
What is Dual 4G?
What is the difference between 3G and 4G phones?
What is the difference between 4G+ and 4G?
Can mobile data network and Wi-Fi be turned on at the same time?
Unable to turn on/off data network
Introduction to WCDMA
Introduction to CDMA2000
Unable to use the data network when I am on a call using another SIM card
What is "Smart switch of data card/Smart data switch"?
What should I do if I forgot the PIN code of the SIM card?
What should I do if I forgot the PUK code of the SIM card?
How do I know how many SIM cards my phone supports?
Can I set Only 4G on my phone?
Can I surf the Internet while I am talking on the phone?
What should I do if it shows that my phone is out of service when I want to make a call?
Top questions
System Settings
SIM card & mobile network
Fingerprint
Lock screen & wallpaper
Dynamic light
Shortcuts & accessibility
Privacy & app encryption
Android Auto
RAM and storage space
Data Usage
Hotspot & tethering
Internet
Products
V50
X200 FE
System Features
Camera
EasyShare
Albums
Common Issues
App crash/no response/stop running
Charging & Heating & Power consumption
Call & Network & Connectivity
Lag
Hardware
Battery
Sensor
Infrared remote control
SIM card/SD card
Home screen& Lock screen
Widget
Lock screen settings
Home screen
Operating System
ROOT
Log
vivo Privacy Terms for After-sales Service
vivo Privacy Terms for After-sales Service
Accounts & Google
vivo account
Contact Us
Chat Support
Mon-Fri 9:30-18:30 (except Wed 3:00 pm-4:30 pm)
8008528355
Mon-Fri 9:30-18:30 (except Wed 3:00 pm-4:30 pm)
servicecenter@sg.vivo.com
