Android has decent accessiblity, however it's better suited to people with partial sight. If you know you're going to lose all of it in the future, iOS might be a good idea. Talkback is competent and reasonably easy to use, but an iPhone will offer better support both at the corporate and community levels. We've got applevis. Android users don't really have an equivalent, and personally I think that alone makes iOS the better choice. If you decide to stick to the Android route, try and get the best phone you can. Talkback doesn't run as well on cheaper models with weaker processors. I recommend sticking to Pixel phones on the Android side, as even Samsung includes first-party apps that are inaccessible... like the one you use to get technical support.

Well, if they are both Samsung phones, they will basically function the exact same with a slight difference of feel and shape. Basically, your two choices are android or Apple. Regardless of the phone model, there are not many choices out there for operating system these days. Personally, Apple has way more function with voiceover and is much easier to navigate than talk back on android, but to each their own I guess.

Look at Project Ray from Israel. Designed specifically for blind and low vision users.

https://project-ray.com/products/

Accessibility features will be the same on both. So to choose betweenthe two, you would go with one that perhaps has better battery life or maybe even a headphone jack or a bigger screen. If you want the best accessibilty and ease of use then as someone mentioned getting an iphone would be the best option.

Source: my bestfriend was born blind so i have been by his side all his life.

if you can, then go with S20 ultra. Samsung and Google are working together for accessibility and those features comes first on Samsung phones. specially S series phones.