Our team performs thermo-ergonomic analysis of mobile devices for about a year now. Our added research provides further evidence that the current mobile device architecture has failures and even normal use of mobile devices cause undesirable overheating, which might lead to premature deterioration and inconvenient use. The results of our previous test highlighted the need to review the mobile device test methods, improve it by combining multiple criteria, and perform tests in a homogeneous environment. The revised approach allows us to compare and enhance the usability the test results. In our new piece of research, we fine-tuned the test environment and improved the test method by automating the process. The new software and hardware test environment also enable to conduct a more comprehensive analysis.