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How to Fix Black Screen — verykool s3504 Mystic II
How to Fix Black Screen — verykool s3504 Mystic II
The verykool s3504 Mystic II is a 2015 Android 4.2 smartphone powered by the Mediatek MT6572M (28 nm) with 512MB and 4GB internal storage. It features a 3.5", TFT, 256K colors, 320.0x480.0 display and is available in Black.
The s3504 Mystic II is equipped with a Li-Ion 1200 mAh, removable, a 5 MP, 720p@30fps main camera, a 3 MP front camera. The device uses a Dual SIM (Mini-SIM, dual stand-by) configuration. It weighs 105 g.
A black screen on the verykool s3504 Mystic II 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 verykool s3504 Mystic II: 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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