Nokia 306 - Manual (Page 8)

Insert or remove a memory card
Use only compatible microSD cards approved by Nokia for use with this device.
Incompatible cards may damage the card and the device and corrupt data stored on
the card.
Your phone supports memory cards with a capacity of up to 32 GB.
You can insert or remove the memory card without switching the phone off.
Insert a memory card
1 Use your fingernail to open the cover of the memory card slot.
2 Push the memory card in with the contact area face up until it locks into place.
3 Close the cover of the memory card slot.
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