Very useful - and without any problems

I would also add that I, as his late fifties wanted to have a larger screen than that of my Grade 1 (5.3 inches). And after a few months with the Galaxy 6.3, I'll probably want to have no more phone in this life,
that does not offer at least 6 inches display size.

I use the 6.3 mega daily maximum satisfied :-)

Update: After nearly 3 months of experience I would also give a 6th star.
Everything runs like clockwork - and the screen is wonderfully sharp.
The size is - for each carrying a stretch pants - no problem!