This is a professional display/screen test tool for Android devices. It has:1. Multi touch: Test max touch points supported by device;2. Solid color: red, green, blue, magenta, cyan, white, black, and it supports scrolling to adjust color values;3. Gray level: 8 levels, 16 levels, 32 levels, 64 levels, 256 levels, red, green, blue gradient (16 levels, 32 levels, 256 levels), and it supports pattern scrolling and scaling; 4. Colorbar: VGA full range colorbar, ITU.R BT.601 colorbar (100%, 75%), ITU.R BT.709 color bar (100%, 75%), SMPTE colorbar, SMPTE HD colorbar;5. Geometry: grid+cycles (white, red, green, blue), rect board, rect+cross, cross, cycle, Rect+cycle, rect+X, grid;6. Dot/Line: dot interlace, dot by space, line by space, color line by space; 7. ChessBoard: chess board test pattern (including 8×8, 16×16, 32×32, 64×64, 128×128, custom size chess board);8. View angle: Test horizontal/vertical viewing angle of display;9. Gamma: Camma test pattern can be used to evaluate gamma value of display, including white, red, green, blue gamma test;