how to enter recovery or download mode samsung sm-g996u1.
now user lock condition.
try to vol up + power with usb connected.
1. To enter into the "Recovery Mode" first you need to switch of your S21 device and connect it using a USB cable to your PC.
2. Now press and hold the "Vol Up" button along with the "Power" button at the same time.
3. Once you see the phone model number on screen release the "Power" button while keep holding on to the "Vol Up" button.
4. Now you will be entered into the Android Recovery Mode.