How to bypass security code in samsung kids tablet

How to perform a factory reset on this kids tablet when,  "Power + Vol up + Home"  reset fail or doesn't go trough, and tablet is pass-code locked/stuck in child mode and you have no longer access to the regular system.

Samsung Galaxy tab 3 kids
Model: SM-T2105

If you feel frustrated Don't worry, try this magic trick:

1- Turn it off , then turn it on and when booting up... ( see screen below)

2-  As soon as you see lock screen pull down the notification bar  and then tap in the setting gear icon ( it has to be done right away in 1 or 1.5 second)

3 - After tap on the setting icon wait for 3 or 4 second until the screen setting appear ; at this point you have unrestricted access to the settings like in regular mode, then just navigate trough the settings and perform factory reset

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