Kyocera KC-01 Boot options screen not appear

Aug 17, 2018
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Hello all!

I have a problem with my phone Kyocera KC-01 (Android 4.4.1),

I've recently changed my pattern lock screen,

I forgot it, then I have no idea to access on my phone,

I tryed reset it for holding on power button & volume down but there is no boot options screen.

If anyone can help me about it.

Thanks