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How to Fix Black Screen — Honor 400 (China)
How to Fix Black Screen — Honor 400 (China)
The Honor 400 (China) is a 2025 Android 15, MagicOS 9 smartphone powered by the Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm) with 12GB | 16GB and 256GB | 512GB internal storage. It features a 6.5", AMOLED, 1B colors, 120Hz, HDR, 5000 nits (peak), 1264.0x2736.0 display and is available in Black, Silver, Blue, Pink.
The 400 (China) is equipped with a Si/C Li-Ion 7200 mAh, a 200 MP, 4K, 1080p, gyro-EIS, OIS main camera, a 50 MP, 4K, 1080p, gyro-EIS front camera. The device uses a Nano-SIM + Nano-SIM configuration. It weighs 196 g.
A black screen on the Honor 400 (China) can occur due to a drained battery, a software crash, or the screen becoming unresponsive. In most cases this can be resolved with a force restart or a short charging period without any data loss. Follow the steps below in order before considering a factory reset.
On your Honor 400 (China): charge for 30+ minutes with a different cable and charger
Hold Power for 15–20 seconds
If still black: hold Power + Volume Down for 10 seconds
Try holding Power + Volume Up to enter Recovery Mode
In Recovery: select 'Reboot system now'
If Recovery loads: wipe cache partition then reboot
Last resort: factory reset from Recovery — erases all data
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