Set up Display Ratio on OPENTEL 4K-OP10C
- Press (MENU) on remote control
- Press "Down" arrow to (System Setting) and press OK on remote control
- Press "Down" arrow to (Accessibility) and press OK on remote control
- Press "Down" arrow to (TV Display Ratio) and press OK on remote control
- Set up (TV RATIO) : choose (16:9 Auto) and press OK on remote control
- Then press "Right" arrow to (Save) and press OK on remote control