My issue is she is very old and cannot learn new things. There is NO WAY she'll be able to adjust to not having the home button.
I’m much younger, but have the same reaction to much new tech and software — e.g., the ridiculous changes in the Watch OS 10, which overhauled a superb, intuitive interface.
She's 88 years old, and you will get there someday, and you'll hope others have compassion for your limited ability to deal with changing technology.
Your point is well taken and I've watched people struggle with complicated interfaces — even the iPhone itself and most apps have hidden, secret controls. They are also inconsistent from one app to another, even Apple's own.
The whole issue of aging is a blind spot in the tech world, such as (just one example) no way to increase the size of the (tiny) battery percentage at top right (very difficult for old folks to read).
I agree 100% with you!
As to your query… the iPhone SE original (2016) with its real home button could be a good pick. We use ours for cell service and many other purposes — and it should handle her needs well. OTOH, the phone is small.
The iPhone SE 3 from 2022 could an alternative to the SE, although its home button as I noted above is strange. It's not a real button and the haptic feedback and how it forces you to grip the phone just so are a nuisance. It would also be too small given what she,s used to.
Maybe an iPad 9 or iPad Mini with real home button and cell service could work for her. The screen would be bigger than a phone, text would be easier to read, and the interface elements easier to see and tap. This is also one case where the unfounded knock on the iPad — “It's just a big iPhone” — is a big PLUS as most everything works similarly, so she'd already know the interface!
Or, try a combination. Use the iPhone SE for cell calling and the iPad with WiFi for everything else. Of course, I can remember setting up my father with multiple devices (DVR, VCR, and TV ) to watch and record mystery shows — and that was a huge adjustment — too many remotes, too much juggling, getting lost in the interface, and problem with the Input control changing devices. Your Mom might likely feel the same way having 2 devices.
Hope that helps!