Disable lock on samsung no pin

Forum discussion tagged with Disable lock on samsung no pin.
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    samsung gt 18190 mini what is the problem it stock on samsung logo when turn on and can't switch off unles battery remove

    This is my daughter phone that was not able to use by her that it just open up to Samsung logo only and that it can't turn off unless battery is remove of course can any body show how to or will be fix?