Q：The boot screen displays many parameters (Recovery mode).
A：The device system may have crashed for some unknown reason. Please try the following:
1. Select "Wipe data/factory reset", then press the power button to clear data, and then follow the prompts to restart.
2. On a mobile phone, press and hold the power button for 10 seconds to perform a software recovery; for a tablet, you can use the reset button (usually located next to the power button or in a small hole on the opposite side frame) to restore the device. Use a SIM card eject tool to press it.
3. Download the system firmware and flashing tool, and upgrade the firmware via a wired connection to a computer. This usually solves the problem.
4. If the above steps do not resolve the issue, hardware repair is required.
