If you are using a Text field, have you tried setting a Tab position for the phone number (set in the Appearance tab of the Inspector) and use just one tab character between the columns?
I suspect that the small differences in font sizes between the PC Windows and iPad iOS are causing the apparent misalignment.
Easier yet... Just break the two into 2 different text boxes.. Then you can align as you like..
textbox1 - Home Phone -->
textbox2 - (111) 222-2222
This way you can move/align either one or space it accordingly..