How to set up an android device to function as a phone only Is there a way to set up my android device so that when the lock screen unlocked, the phone app always is open by default? In other words: I swipe to unlock the screen and I always automatically see the phone keypad first and the device is ready to make a call.

I am trying to set up a new Samsung Galaxy Note for my grandmother BTW. Someone bought it for her for her birthday. She likes the size for her eyes, but is intimidated by the home screen, and has discarded the phone for that reason. I figure if can make it operate as she expects then she might warm up to it.
Install this Easy Phone App into your grandmother's cell and place its shortcut on the screen or the desktop of that android device.
And tell her to just swipe that circle with lock off the screen (i.e Unlock  screen) whenever she sees one, and touch on that phone icon in the center! (to activate the Phone app)...

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Alternative-

Install this One tap dailer.

Features:

It gives a speed dail like facility. Meaning that, it creates a dedicated app icon on screen for each and every contact. That would be good if she has some few fixed people to talk or chat to.

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Of 17, 7 rated it as 5 stars.