Verykool R620 - Manual (Page 13)

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memory card holder.
1.4 Plug and unplug the earphone
Open the USB cover and insert the connector of the earphone to the
earphone jack at the bottom of the mobile phone. Gently pull out the
earphone to remove it.
1.5 Status bar and content
In standby screen you can get the information that you need from
the indication icons on the screen.
Indicating the current signal strength of SIM1
Indicating that the SIM1 is connecting network currently
Indicating there is text message not read of SIM1
Indicating there is MMS sending or downloading
Indicating there is MMS not read of SIM 1