When dismantling any phone, great care should be taken to ensure that no damage is caused to any of the parts. Rough handling may result in severe damage of many parts, and if proper anti-static procedures are not followed, electrostatic damage may result in any electronic component.
Before commencing, it is recommended that the correct tools are purchased for the job in hand. At the very least, you will require a Torx T6 screwdriver. Do NOT attempt to use a small Allen key or filed down screwdriver, you will only damage the screws.
Step 1. Remove the front and back covers, the battery and SIM card.
Step 2. On the front of the phone you will see six Torx T6 screws (highlighted in red). Remove these and keep them in a safe place.
Step 3. With the six screws removed, you can simply lift the display/keypad unit and the main circuit board away from the phone.
Step 4. The only bit left to remove is the base connector which also houses the vibra motor shown below with it's position marked in red.
Step 5. To re-assemble the phone, simply reverse the above steps. After re-assembly take as much time as you need to thoroughly test the handset to ensure that you have caused no damage, or forgotten one of the re-assembly steps.