Verykool I316BR - Manual (Page 21)

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5.1 Letter entry mode
Press a key once to insert the first letter on the key, twice
for the second letter, etc. If you pause briefly, the last letter
in the display is accepted and the text awaits the next entry.
For example, press the "2" key continuously, it will appear
"a"、"b"、"c"、"2"one by one.
5.2 Number entry mode
Number Entry Mode can input the number in the text, such
as telephone number. Tap the proper number and input it.
6. Care and Maintenance
Battery care
• Your device is powered by a rechargeable battery. When
the power is weak, please charge the battery. In order to
extend the lifespan of the battery, use all the battery's power
before recharging.
• Unplug the charger from the electrical plug and the device
when not in use. Do not leave the battery connected to a
charger more than a week. Overcharging may shorten its
lifespan.
• Extreme temperatures can affect the ability of your battery
to charge. Battery needs the fit temperature. If the
surrounding temperature is over 40°C, the battery cannot be
charged.
• Use the battery only for its intended purpose. Never use
any charger or battery that is damaged.
Do not short-circuit the battery. Accidental short-circuiting
can occur when a metallic object such as a coin, clip, or pen