I been using this device say like a month and I haven’t notice any issue, lags until now. My phone’s fingerprint sensor is not working not only that my home button is fully disabled. It is giving me the warning "hardware is not working". I have to work with on screen buttons but that’s not what I pay for.
The service center is pretty far away and the review of the service center is very bad. Other than that device is working smoothly. One more problem that I have been facing is battery draining in standby, that is very surprising for me as one plus is pretty good company. May be it’s the problem with only my device. If you are trying to bye this device then think little bit, but it’s pretty good device.