You do not need to charge the battery for a specific lengthof time, and you can use the device while it is charging.If the battery is completely discharged, it may take severalminutes before the charging indicator appears on thedisplay or before any calls can be made.If the battery has not been used for a long time, to begincharging, you may need to connect the charger, thendisconnect and reconnect it.It may take longer than expected before the device is fullycharged, due to the large capacity of the BL-5J battery.Switch on or offPress and hold the end key.Use the phone only in its normal operating position.Avoid touching the antenna area unnecessarily while theantenna is transmitting or receiving. Contact with10CyanCyan MagentaMagenta YellowYellow BlackBlack