Need Help

[Sia Shee Ying]

can someone help me?
my lockscreen pin suddenly chged itself
the pin that i always use cnt access anymore and im sure nobody touches my device before
i've tried the android device manager but it require me to turn on my location service which i dint and i cant now
so is there any other methods for me to unlock my screen or bypass it or is there a way for me to activate my location service without unlocking the device?
im using a lenovo a850+ a new device that just released this year

 

[belodion]

You've presumably deliberately entered wrong PINs to get as far as you have, but if that's no help I imagine a hard reset would be necessary.

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