Brought my first opo and am still using without issue.brought my sister the sam opo and the touch screen was buggy at the start and after several update it appeared to be working within a 6 months the screen did not repond to any touch commands found that the issue has been plaguing other opo oweners even found a youtube video on the issue called opo customer service and this is where the headaches started.opo customer service is not reponsive it took 3 days for them to repond to my initial email then another 3 days to get a support technician to do initial troubleshooting of phone which they were unable to fix the issue