My Mum said she wants a Samsung S5. Something with at least a 5" screen. Says others too small. Probably because her friend has S5 as well.
Just trying to convince here that she doesn't need that one. As whilst still available is aver 2 years old. Which I feel is outdated in the mobile world
From what I can see Samsung aren't going to be releasing new models any time soon. So after some suggestions on what phone to get her. She still says she wants Samsung as we already have a Samsung Galaxy tab s2 9.7" tablet.
Budget around $400 or so for an Android phone.
since you don't mention any budget just get the new Galaxy s7.