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How to disable my SIM card?

How to insert the SIM card into my phone?

Where can I find the SIM card Toolkit?

How to check the SIM card storage details?

How to distinguish SIM1 from SIM2?

How to set the SIM card as the Data card?

How to set the default messages delivery card?

How to transfer contacts from SIM card to my phone?

Can I remove or insert SIM and SD card when my phone is on?

How to change SIM PIN?

SIM Toolkit is always showing error. What should I do?

Is there any limit to the contacts number saved on SIM card?

What is PUK?

How many SIM & SD cards can be inserted into my phone?

What is SIM PIN?

Where can I find SIM messages?

Why is the SIM toolkit gray on my phone?

Can I answer or make calls if the SIM card is disabled?

Can I change the name of SIM card?

What should I do if I forget PUK?

Can I transfer the messages stored on the phone to the SIM card?

Lag & Stuck
Find my phone
vivo & Google account
Storage & File Manager
Backup & vivoCloud
Purchase consulting
Personal Hotspot & Wi-Fi
Music & Video