Hisense U3 User Manual page 15

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After the battery is fully charged, disconnect the
phone from the charger. First unplug the charger from
the device, and then unplug it from the electric socket.
Battery charging tips and precautions
Use only approved chargers, batteries, and cables. Using
an unapproved or incompatible power adapter, charger, or
battery may damage your phone, shorten its lifespan, or
cause a fire, explosion, or other hazards.
• Avoid using your phone when it is charging. Do not
cover your phone or the power adapter.
• Connecting the charger improperly may cause serious
damage to the phone. Any damage caused by misuse
is not covered by the warranty.
• If the AC power supply is of a lower voltage, then a
longer charging time may be needed.
• If non-standard chargers such as computers are used
for charging, then a longer charge time may be needed.
• Fully charge the battery before first using the phone and
disconnect the charger immediately after the first charge
is completed.
• Remove the charger from the electric socket when not
charging the phone.
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