Zte Optus X Vista User Manual page 61

Air Bags
Do not place your phone in the area over an air bag or in the air
bag deployment area as an airbag inflates with great force and
serious injury could occur.
Place your phone safely before driving your vehicle.
Seizures/Blackouts
Your phone can produce a bright or flashing light. A small
percentage of people may be susceptible to blackouts or
seizures (even if they have never had one before) when
exposed to flashing lights or light patterns such as when playing
games or watching videos. If you have experienced seizures or
blackouts or have a family history of such occurrences, please
consult a physician. To reduce the risk of blackouts or seizures,
you can use your phone in a well-lit room and take frequent
breaks.
Repetitive Strain Injuries
To minimize the risk of Repetitive Strain Injury (RSI) when
texting or playing games with your phone:

Do not grip the phone too tightly.

Press the buttons lightly.

Use the special features which are designed to minimize the
times of pressing buttons, such as Message Templates and
Predictive Text.
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