3 ms·
Judging from old reviews of the phone, it looks like a positional proximity sensor. The screen had a blue hover glow where your finger approached the screen.
by barrkel 5y ago
Judging from old reviews of the phone, it looks like a positional proximity sensor. The screen had a blue hover glow where your finger approached the screen.
- ok_dad 5y agoIt was literally a screen mounted on a button, actually.