I carry 2 cell phones. I wear a watch.

Scenario 1:

Pull out phone. Click button. Realize you have a text. Answer text. Put phone in pocket. Oh wait what time is it? Pull out phone. Click button. An email. Read. Phone in pocket. Oh wait. Pull phone out. Click button. Check time.

Scenario 2:

Look at watch.

Way too many steps in scenario 1.