Lenovo Zuk Z1 — Give me solution otherwise replace this

Address:

131039

I already complained about this phone by calling lenovo centre... This phn is being hanged n used to bcom locked(that doesnt opn by keep finger on sensor and no response comes from phone then aftr i do switch off d phn then it bcom for use).
I told in service centre they told me solution but didnt work.. I m tired of this phone... Pls. Replace this