Do I need to unlock bootloader to root?

You do not need to unlock the bootloader to root. The locked bootloader only protects the kernel and recovery partitions.

Why my redmi 3s Prime is not starting?

Xiaomi Redmi 3S cannot boot. In the state of power off, long press the power button and volume plus button together to enter the Recovery mode, choose and confirm “double wipe”, that is, wipe data / factory reset and wipe cache partition, then reboot the system by clicking “reboot system now”.

Does redmi 3s prime support VoLTE?

Both Redmi 3s and Redmi 3s Prime got a premium metal unibody design with rounded edges and corners. For connectivity, the Redmi 3s variants got dual SIM capability that supports high-speed 4G LTE along with VoLTE that in turn supports all Indian 4G bands.

What is the processor of redmi 3S prime?

Qualcomm Snapdragon 430
Redmi 3S Prime (Gold, 32 GB) (3 GB RAM)

Operating System	Android Marshmallow 6.0.1
Processor Type	Qualcomm Snapdragon 430 64-bit Octa Core 1.4GHz
Processor Core	Octa Core
Primary Clock Speed	1.4 GHz
Operating Frequency	GSM – 900, 1800; WCDMA – 900, 2100; 4G LTE (TDD) – Band 40, LTE (FDD) – Band 3/5

Why is my redmi phone not switching on?

Press & hold the Volume Up and Power buttons together. Release the Power button when the Mi logo appears on the screen (don’t release the volume up button yet). Navigate using the volume buttons (up or down) and confirm by using the power button.

Which slot is 4G in redmi 3S prime?

The Redmi 3S Prime uses a hybrid SIM slot which means it accepts one Micro-SIM and another Nano-SIM or microSD card for storage. Unfortunately, this means that users will have to choose between a second SIM and a microSD card. Coming to your question : Use any slot for 4G.