Hisense U3 2021 User Manual page 15

• Remove the charger from the electric socket when not
charging the phone.
• The phone may not start immediately if charging with
low battery. After a period of charging, the phone will
start normally.
• The charging time may vary depending on the ambient
temperature and the remaining battery level.
• The phone can be safely charged within the
environment temperature of 0 ℃ to 40 ℃ . Charging at
temperatures below 0℃ or higher than 40℃ will harm
the battery performance and shorten its life. Longterm
charging in extreme temperatures will damage the
battery.
• While charging, the phone and the charger may heat up.
This is normal and should not affect the phone's
lifespan or performance. If the battery gets hotter than
usual, stop charging it. Place your phone in a cool place
and allow it to cool down. Avoid prolonged contact with
the surface of your phone if it becomes hot.
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