for iOS 9.1 software

The current line contains additional text to the left
The current line contains additional text to the right
Set the leftmost or rightmost cell to display status information. Go to
Settings > General > Accessibility > VoiceOver > Braille > Status Cell,
then tap Left or Right.
See an expanded description of the status cell. On your braille display,
press the status cell’s router button.
Make phone calls with VoiceOver
Answer or end a call. Double-tap the screen with two fingers.
When a phone call is established with VoiceOver on, the screen displays
the numeric keypad by default, instead of showing call options.
Display call options. Select the Hide Keypad button in the lower-right
corner and double-tap.
Display the numeric keypad again. Select the Keypad button near the
center of the screen and double-tap.
Read math equations
VoiceOver can read aloud math equations encoded using:
MathML on the web
MathML or LaTeX in iBooks Author