Apple only one OS n only one phone
You want iPhone you have zero choice
For androids there are so many choices
Samsung just need to evaluate whether design is still an important criteria in buying. Looks like it is here in this forum
S3 was damn from start as being ugly but yet end up as bestseller phone
I would think a hands on will gives one s better impression as photos are not accurate assessment
Personally design is never my main consideration.
For next galaxy Samsung could possibly consider better classier build materials with minimal plastics while maintaining its shape. This I believe will please more some of its fans

and not to forget after sales service