Here are our guides for the Nokia 6 series phones:

Nokia 6100 Disassembly/Dismantle Guide: Nice guide with pictures on taking phone apart.
Nokia 6101 Full Dismantle/Disassembly Guide: Pictorial guide on taking apart the phone.
Nokia 6210 Housing Change/Disassembly Guide: How to change housing and chassis with picture.
Nokia 6230/6230i Disassembly/Dismantle Guide: How to take apart the chassis of the phone.
Nokia 6234 LCD Change/Disassembly Guide: How to change the LCD and general disassembly.
Nokia 6260 Dismantle/Disassembly Instructions: Guide on how to get around the flip part.
Nokia 6280 Housing Disassemble/Dismantle Guide: Instructions on how to change the housing.
Nokia 6300 LCD Change/Dismantle Guide: How to remove the LCD and dismantle the phone.
Nokia 6300 Dismantle/Disassembly Guide: Full blooded guide with photos on changing housing.
Nokia 6310/6310i Disassembly/Dismantle Guide: Full guide on how to change housing.
Nokia 6500 Classic Dismantle/Housing Change: Guide with pictures on the disassembly process.
Nokia 6500 Slide LCD Change/Disassembly Guide: Guide with pictures on how to dismantle.
Nokia 6600 Housing Change/Disassembly Guide: Guide to changing the housing on this handset.
Nokia 6630 Disassembly/Dismantle Guide: Good guide with pictures on how to take apart the handset.
Nokia 6680 Disassembly/Dismantle Guide: How to change the housing on this handset.
Nokia 6700 Classic LCD Removal/Dismantle Guide: Good video on how to change the housing and LCD.
Nokia 6820 Housing Change/Dismantle Guide: Good guide with pictures on how to dismantle the handset.