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Check the power, radio waves, and battery!
Usually, keep the cellphone's "power" on.
To make or receive calls, turn the power on.
Hold down
for at least one second.
You cannot talk if you are not receiving "radio waves."
It is sometimes difficult to receive radio waves in
some places even in service areas.
indicates the reception state.
Pay attention to the remaining "battery" power.
Sometimes the cellphone does not function properly
if the remaining battery power is low.
indicates the remaining battery power.
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