I did a teardown of an old flip phone that was no longer being used and laid out all of the component parts as follows:
QUALCOMM QSC6055 ENPC65B V453008: Memory Storage, Micron Technology 50A98 JW582 Semiconductor, A7354: Power Amplifier Module, DD6 94V0: said Data not Found, EMY57LLW19: information not found, LM220CMIAY04: information not found, tsd2g03884fpc-a1-e: information not found
The manufacturing techniques I found that were used to make the phone were soldering, plastic molding, cutting strips of plastic sheets, and metal cutting. A lot of tape was used to keep the pieces together, particularly the wiring. A fair amount of the pieces were kept together using metal screws.
I used three screwdrivers with different screw sizes as well as an unneeded attempt with a wrench to take apart the phone. In addition to the tools, I used my hands to pry apart the pieces and remove the adhesives.
Design Elements of Interest:
The keypad components of the phone were interesting to me because they were not what I expected. I thought it was interesting that the flip phone keypad, unlike a computer keyboard, did not have an individual component for each key. Instead all of the keys were connected in layers on top of the circuit board. The small metal pieces fit into the white plastic pattern, which was held together by a plastic adhesive and placed on top of the circuit board and covered by the painted rubber display that the user sees. The designers may have made it with this method to prevent individual keys from becoming loose and potentially lost / not in contact with the board and rendering typing difficult.
Another interesting design element was the phone’s camera. I expected the camera to be bigger, more rounded in shape, and to be found solely in the top section of the flip phone. I did not expect for the camera to span across the phone’s hinge, have multiple connecting sections, and be so much smaller than I imagined. The designers may have made it this way to easily connect the phone’s display with the keypad. The shape may have been used to make sure pressing other buttons did not damage the connection between the camera and the camera taking button.