I wonder why the "delete" key is now located on the top part of the keypad screen. I can see that both for iOS and Android. I remember that few month (or years maybe…) ago, this was more often located on the bottom of the screen, near the call icon.
I'm today working on a keypad design for an Android App. I'm not sure I get the value of having this "delete" button near the numbers I'm typing. I think it is more obvious to have that "delete" button on the bottom part. The top version seems really far away to tap on. I know it depends of the device we use, but I can feel that on my Nexus 5.
Attached, the native Android Kitkat keypad display with top located delete button, vs Viber app, with the key displayed on the bottom.
Have you ever experienced that? Any though?