The below information is from:
https://support.google.com/accessibility/android/answer/6110948?hl=en
Default keymap
Note: The shortcuts below use the Alt key. You can choose a different modifier key by going to Settings and then Accessibility and then TalkBack and then Settings and then Manage keyboard shortcuts and then Choose modifier key.
Navigation
•Move to next item: Alt + Right arrow
•Move to previous item: Alt + Left arrow
•Move to item above: Alt + Up arrow
•Move to item below: Alt + Down arrow
•Move to first item: Alt + Control + Left arrow
•Move to last item: Alt + Control + Right arrow
•Click focused element: Alt + Enter
•Long-press focused element (touch and hold): Alt + Shift + Enter
•Read from top: Alt + Control + Enter
•Read from next item: Alt + Control + Shift + Enter
•Navigate to next or previous window: Alt + Control + Down or Up arrow
•Note: In split screen view, this shortcut moves your focus between the two open apps. Otherwise, it moves focus between the navigation bar, main screen, and status bar.
Global actions
•Back: Alt + Control + Backspace
•Home: Alt + Control + h
•Recent apps/Overview: Alt + Control + r
•Notifications: Alt + Control + n
•Search the screen: Alt + Control + / (forward slash)
•Open global context menu: Alt + Space
•Open local context menu: Alt + Shift + Space
•Pause or resume TalkBack: Alt + Control + z
•Open list of actions: Alt + Control + Space
Text navigation
•Move to next word: Alt + Shift + Control + Right arrow
•Move to previous word: Alt + Shift + Control + Left arrow
•Move to next character: Alt + Shift+ Right arrow
•Move to previous character: Alt + Shift+ Left arrow
Chrome web page navigation
Use these shortcuts to move to the next or previous element on a web page.
•Button
•Next: Alt + b
•Previous: Alt + Shift + b
•Control
•Next: Alt + c
•Previous: Alt + Shift + c
•ARIA landmark
•Next: Alt + d
•Previous: Alt + Shift + d
•Editable field
•Next: Alt + e
•Previous: Alt + Shift + e
•Focusable item
•Next: Alt + f
•Previous: Alt + Shift + f
•Graphic:
•Next: Alt + g
•Previous: Alt + Shift + g
•Heading
•Next: Alt + h
•Previous: Alt + Shift + h
•Heading level 1, 2, 3, 4, 5 or 6
•Next: Alt + [1-6]
•Previous: Alt + Shift + [1-6]
•List
•Next: Alt + o
•Previous: Alt + Shift + o
•List item
•Next: Alt + i
•Previous: Alt + Shift + i
•Link
•Next: Alt + L
•Previous: Alt + Shift + L
•Table
•Next: Alt + t
•Previous: Alt + Shift + t
•Checkbox
•Next: Alt + x
•Previous: Alt + Shift + x
•Combo box
•Next: Alt + z
•Previous: Alt + Shift + z
You can find more helpful information at
the Android Accessibility Help Center.
https://support.google.com/accessibility/android/?hl=en#topic=6007234
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