Zte WP651 User Manual page 5

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Note
When it is in charge, place the phone on condition of good ventilation and
℃～＋ ℃
temperature between -10 55 . Ensure to use the charger offered by the
manufacturer. Using unauthorized charger may cause danger and violate the
authorization of the phone and the guarantee article.
When the phone is automatically switched off or indicates the alarm
information of power shortage, charge the battery in time.
The duration time of the standby status or conversation of the phone is
5