Firmly grasp the edge of the midframe assembly.

Lift up on the midframe assembly while pushing down on the battery to separate the midframe assembly from the rest of the phone.

While lifting the midframe, be careful to avoid snagging it on the audio jack or charging port.

Once the midframe is partially seperated, carefully run an opening pick around the edges of the rest of the phone to separate the top of the midframe.

To avoid damage to the headphone jack, remove the top of the midframe first, then push the midframe downwards to disengage it from the headphone jack.

You may need to heat and apply an iOpener to the edges of the display to soften the display adhesive if midframe separation is difficult.