Vivo Y15s Network and call error
NVRAM is a nonvolatile random access memory that can save data even with no power or device on that can retain its contests as you switch off a device.
NVRAM consists of SRAM and EEPROM
NVRAM on the mobile phone is Flash storage that can be flashed with respect to mobile firmware and can be changed according to different phases of testing
NVRAM CONTENTS
- Data wifi and Bluetooth (configuration information and services )
- IMEI &MEID (Protocol information)
- Baseband (Calibration changes )
- MAC Address
- APN information
- RAT information
NVRAM FIX
- Not registered on a network
- Emergence call only
- Invalid sim
- Not making calls
VIVO Y15s Specifications
- Network 4G
- OS 11 Go Edition /12 Funtouch
- Chipset Mediatek
- Storage RAM/ROM 3/32,3/64,4/64
- Display LPS
- Battery 5000mAh
- Model 2120/2147
Tools supported for VIVO Y15s
- Unlocktool
How to backup NVRAM on VIVO Y15s
- Download the NVRAM file from the link below
- Open the Tool – Unlocktool
- Unlock Bootloader
- Erase NVRAM
- Restore the NVRAM from the file you downloaded
- Unlock bootloader
- Factory reset your phone
