Diy louvered screenThis is the UNIMAX U683CL User Manual in English provided by the manufacture. UNIMAX U683CL runs Android Oreo 8.1, features a 5.0-inch FWVGA(854x480) DisplayBest 2d boss fightsWe reported on January that Security company Malwarebytes had discovered a US Government-subsidized low-cost smartphone is being sold to customers with pre-installed malware. The UMX U683CL, being sold by Virgin Mobile's Assurance Wireless program for only $35 (due to the Lifeline Assistance program) came pre-loaded with two trojans, one of which could not be removed.