+ Element FF ID A iPhone Production Standards Work Element Decription Fixture and Secure the rear case (base) JJ - B Install the Lightning plug connector assembly into the rear case (base) KK A C D E F G H J K Affix (fasten) the lightning connector assembly; 4 screws Install the Power Button Install 3 side buttons (Mute switch and volume controls) Install the Power & Volume button flex cable assembly Prepare the Wifi antenna assy Install and fasten Blue tooth antenna PCBA ass Secure/affix wifi and Bluetooth assemblies with metal bracket install the taptic engine (vibrations & sensory motor) and secure the metal bracket B LL C C MM Precedence GG HH D, E.K G 00 H F L M connect the side buttons to the power & volume flex cable secure the button and cable assembly with 2 metal brackets and screws F L N P Install the rear facing camera assembly (includes flex cable) Install the front facing & infrared camera assembly (includes flex cable) Install upper speaker assembly M J J Q Quality check! Ensure proper fastening & function of the side buttons, toggle, Power, Vibration) R S T U V W X Y N Prepare the SIM card tray and ejection mechanism/assembly Install Logic board PCBA_1 install Logic Board PCBA_2 Connect the rear facing camera flex cable to PCBA_1 Connect the front facing camera with infrared camera assembly and IR flex cable to PCBA_2 Connect the power switch/volume flex cable to PCBA_1 Secure all cable connections with fasteners LCD screen & digitizer assembly is prepared by removing protective foils and attaching LCD to the digitizer via 4 screws Attach and Secure (with 2 screws) the home button assembly within the LCD screen frame (hole provided). L.M,N,Q R R S T S U,V,W AA BB Install front facing camera's flex cable assembly Install microphone and bottom speaker assembly and secure with metal bracket + 3 screws Y AA CC DD EE Battery & Charging coil assembly is prepared by applying double-sided adhesive strip to both the battery assembly and the charging coil assembly. Install (adhere) the charging coil onto the battery pack Adhere the battery/coil assembly into the case (base) by press/hold allowing the adhesive to settle. - CC DD Connect the LCD screen to the logic boards_PCBA 1/2 & secure with metal plates (2 plates) (6 screws) Connect the home button flex cable to the logic board PCBA insert waterproofing gaskets Press/insert SIM card tray into side location of base/case Snap-press together the base/case and LCD assembly to become an enclosed/finished assembly Z, BB, EE FF GG O,P,X,HH JJ Secure the overall assembly with 2 screws in the lower end of the base/case assembly KK Power up and test/inspect functionality of: screen touch activation, sounds, antennas, location services, swiping & setting of app preferences, battery health, cameras, utilities, and calling (send/receive), 360 Visual Check Place phone into the fibreboard crate for transit to packaging depot (3rd party packager) LL MM 2. Precedence Diagram Complete the construction of the precedence diagram based on the data provided in your group's data file.