We might not be accountants, but there’s something comforting about having the keypad right there ... numeric keying is not what this rotary dial numpad keyboard is all about.
The name of the dialer itself suggests that in this, you will get the facility to dial the number like the phone's dialer. Due to this your experience of using WhatsApp will become even better.
This trick works for smartphones and landlines. Open your phone’s keypad and dial * - 6 - 7, followed by the number you’re trying to call. The free process hides your number, which will show ...
However, a dial would add a nice retro touch to any numeric input you might happen to need. If you need project inspiration, how about a volume control? Or, why not a numeric keypad?