Introduction
The Canon PowerShot Elph 310 HS may have issues with the shutter button sticking. Replacing the button should only take a few minutes with these steps.
Tools
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            Use the Phillips #000 screwdriver from the iFixit tool kit to unscrew the two image stabilizer panel’s 2 mm Phillips head screws. 
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            Using your hands, remove the image stabilizer panel. 
 
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            Using your hand, open the battery portal located on the bottom left of the camera. The screw is in the bottom left of the battery portal. 
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            Unscrew the hidden 4mm Phillips head screw inside the battery portal. 
 
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            Remove the HDMI side panel with your hands. 
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            Unscrew the four 4 mm Phillips head screws from the inside of the camera. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.