I bought Super UMI smartphone at Gearbest in 2016 and it is appearing a gray background on 80% of the screen. The serial number is 201606250033796. I still have a part warranty. Who should I contact?
I bought Super UMI smartphone at Gearbest in 2016 and it is appearing a gray background on 80% of the screen. The serial number is 201606250033796. I still have a part warranty. Who should I contact?