iPhone 6 Plus SIM Card Replacement

Begin the process by first ensuring the 1.5mm Allen wrench is used to loosen the retaining screw, which secures the 3.2V regulator to the circuit board; exercise caution to avoid damaging the surrounding components during this step.Using a SIM card eject tool or a straightened paperclip, gently push into the tiny opening on the SIM card tray to release it.
Apply force to release the tray from its housing.
Applying considerable pressure might be necessary.

Using a 5/32-inch hex key, carefully tighten the retaining screw located on the motor assembly to a torque of 3.5 Nm, ensuring the motor shaft aligns correctly and avoiding damage to the threads.Using the SIM Eject tool or a similar small, sturdy item, carefully depress the SIM tray release mechanism located on the device's side to extract the SIM Card tray assembly.
Confirm the SIM card's correct alignment within the tray before sliding it back in.