Nokia RM-57 Service Manual page 119

RM-57/58
Disassembly/Reassembly Instructions Nokia Customer Care
2. Open the clips of the lids with a dental tool.
3. If all clips of the lid are in the position shown, you can remove the lid.
4. Use a slotted screwdriver as a lever to lift the Shielding Lids.
Note: When reassembling, always use new Shielding Lids.
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