Step 1: Tap and then double-tap the Android Home button.
Step 2: On the home screen, move the focus to the Settings button and double-tap.
Step 3: Under Preferences, move the focus to Accessibility and double-tap.
Step 4: On the Accessibility screen, move to System area and choose from these options:
1.Captions adds captions to the bottom center of all images. You can change the text size and caption style.
2.Magnification gestures enables the feature so you can zoom in and out of a view with certain gestures. Swipe right past the toggle to hear an explanation of the gestures.
3.Font size lets you increase all text on your device to a larger point size.
4.Display size lets you increase the size of the elements in your file.
5.Speak passwords lets you speak your passwords rather than type them.