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while until you get an indication of charging in the dis-
play.
An Ericsson-approved battery is indicated by
Ericsson Opti-
mized Charging
each time you start charging the battery. For
the best charging, talk and standby times in the long run,
we recommend that you use only Ericsson-approved batter-
ies with your phone.
Batteries that are not Ericsson-approved are charged slowly
for safety reasons. These are indicated by the message
‘Alien battery - Slow charging only’ in the display during
the charging process.
Tip! You can use the phone while the battery is being
charged. However, this lengthens the charging time.
When the battery is fully charged, the battery meter in the
display is full and the indicator on the top of the phone
shows a steady green light.
Disconnecting the Charger
Taking Care of Your Phone
Thanks to its rugged design the R310 is very resistant to
external influences such as dust, rain and shock. The inside
of the phone is well protected with silicon gaskets and
ePTFE membranes from W.L. Gore & Associates. The out-
side is reinforced with rubber to withstand harsh treatment.
When needed, the phone can be washed under running
water. We recommend that you do it gently in cold water
under a water tap. Before washing the phone, it is important
that the battery and the back cover are properly attached, all
accessories are removed and that the system connector rub-
ber plug is properly attached.
• Disconnect the charger from
the phone by moving the plug
upwards.