Note: Whilst this is a review of the Curve 8520, I am under the impression most Blackberrys have similar accessability features.
Pros: Adjustable font size up to size 14, colour scheme options (inverted, greyscale)
Cons: Tiny lettering on the tiny keys, (I guess you could learn which keys are which) Small print when browsing the internet, setting up email and with certain apps.
Verdict: Definitely an option for those of us with poor eyesight.
How to change font size: Go to the main menu> Options > Screen/Keyboard > Font Size
How to change accessibility features: Main menu > Options > Advanced Options > Accessibility
Full ReviewApparently all Blackberrys have pretty impressive customisable font size, which can make the text pretty large. It is also possible to invert the colours so as to read white text on a black background. The downside of this is that your homescreen (Blackberry jargon for ‘desktop’) looks very strange with an inverted photo. I found a neat way round this, simply edit an image on your computer so that its colours are inverted, then email it across to the phone. When you invert the colours on your phone the image will look normal again.
In terms of general usability, the Blackberry Curve 8520 keys are rather small. I got used to this quickly, however did find it tough to read the lettering on them. Eventually I think I will get the hand of where each key is and what it does. So while this may be a drag at first, the problem will eventually be overcome.
Setting the text to a large size 14 and inverting the colours made sending and receiving texts and emails a walk in the park (I have approximately 1/3 average vision). It also changes the size for all the menus and option screens.
I did find it frustrating at times that the phone would display tiny text when changing settings, for example when setting up email accounts. Similaly some of the applications you can download onto the phone have tiny text, and browsing the internet takes a lot of zooming to become manageable, and even then it is only just doable. A no brainer solution for blackberry would be to make it possible to configure the email accounts through your computer using the supplied USB cable. Similarly it would be an improvement to be able to set the accessibility settings and text size in the same way.
However, all in all this is definitely a usable phone for those with poor vision, and the Blackberry has an extremely impressive array of features including an organiser and support for multiple email accounts.