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How to Fix Bootloop — verykool s3504 Mystic II
How to Fix Bootloop — 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 bootloop on the verykool s3504 Mystic II occurs when the device repeatedly restarts without fully loading Android. This is commonly caused by a failed software update, corrupted system files, or an incompatible app. Most bootloops can be resolved without losing data by clearing the cache partition first before attempting a factory reset.
Factory reset may be needed as a last resort — erases all data.
On your verykool s3504 Mystic II: force restart: hold Power for 15–30 seconds
If still looping: enter Recovery Mode
Navigate to 'Wipe cache partition' → confirm → reboot
If still looping: return to Recovery
Select 'Wipe data/factory reset' → confirm (erases all data)
Last resort: use your manufacturer's PC tool to reinstall firmware
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