Press the Power button once to select it. Your device will now enter Bootloader/Fastboot Mode. Method 2: Using ADB & Fastboot Commands (For Advanced Users) This method requires USB Debugging to be enabled on your phone.
Connect your phone to your PC via USB cable. How to Open Bootloader Mode on ITEL A48
Use the Volume Down button to navigate to the option labeled "Bootloader" or "Fastboot" (if available). Press the Power button once to select it
Press and hold the Volume Up (+) button and the Power button simultaneously. How to Open Bootloader Mode on ITEL A48