When grandma needs a new phone, remember new models are NOT always better!
Here are a few phones that may work better than others for grandparents and seniors. No phone is perfect and there is so much left to be desired in this particular market.
Go for a model with a "physical home button"
Choose the one with the "largest" screen size
Camera quality and sound quality are not as important compared to screen size
Wireless charging is a pro but NOT super important
It's very hard to find brand new iPhone 8 Plus products in store because it's such an old model
Most of what I found on Amazon for this model are refurnished sales
I worry it may soon no longer be supported with new software and apps
I wish Apple still made new models with home buttons