4 ms·
It's been even longer than that. If you look at most mobile phones with real key pads there will be a + on the 0 key. You hold 0 to dial the +.
by adestefan 14y ago
It's been even longer than that. If you look at most mobile phones with real key pads there will be a + on the 0 key. You hold 0 to dial the +.