Nokia 306 - Manual (Page 6)

Insert a SIM card and battery
Note: Switch the device off and disconnect the charger and any other device before
removing any covers. Avoid touching electronic components while changing any
covers. Always store and use the device with any covers attached.
Important: This device is designed to be used with a standard SIM card (see figure)
only. Use of incompatible SIM cards may damage the card or the device, and may
corrupt data stored on the card. Please consult your mobile operator for the use of
a SIM card that has a mini-UICC cutout.
Important: To prevent damage to the SIM card, always remove the battery before
you insert or remove the card.
This phone is intended for use with a BL-4U battery. Always use original Nokia
batteries.
The SIM and its contacts can be easily damaged by scratches or bending, so be careful
when handling, inserting, or removing the card.
1 Put your fingernail in the gap on the right edge of the phone, then carefully lift
and remove the back cover (1).
2 If the battery is in the phone, lift it out (2).
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