Simple.

In android, you can restrict this particular form field to enter only numbers. What happens is, when you do this- as soon as this field is touched - ONLY the numbers keyboard pop up. This allows user to quickly enter the values (numbers, decimals etc) without having to spend much time.

In phones like some HTC models, If I press 1, the screen automatically switches back to the character keyboard. I have to press the 123 tab again to go to the numbers tab and press the next number. However, this is not the case in for example Motorola phones. If I am on the numbers tab, it wont switch back unless I ask it to. However, the numbers are small buttons in a character keypad which lead to slowness and less accuracy.

In my suggested solution, this deals with both of the problems, since you'll only get the numbers input, and the number keypad has big buttons - higher accuracy. (variation of Fitts Law).

Link to how to do my solution in Android.

Simple.

In android, you can restrict this particular form field to enter only numbers. What happens is, when you do this- as soon as this field is touched - ONLY the numbers keyboard pop up. This allows user to quickly enter the values (numbers, decimals etc) without having to spend much time.

In phones like some HTC models, If I press 1, the screen automatically switches back to the character keyboard. I have to press the 123 tab again to go to the numbers tab and press the next number. However, this is not the case in for example Motorola phones. If I am on the numbers tab, it wont switch back unless I ask it to. However, the numbers are small buttons in a character keypad which lead to slowness and less accuracy.

In my suggested solution, this deals with both of the problems, since you'll only get the numbers input, and the number keypad has big buttons - higher accuracy. (variation of Fitts Law).

Link to how to do my solution in Android.