Remove the 2x pentelobe screws from the bottom of the phone.
Insert your iSesamo tool into the bottom left-hand corner of iPhone 7 Plus and gently pry upwards to release the corner. Heat may be needed to help release the LCD Assembly from the frame.
Gently work your iSesamo tool around the outer edges of the device. Be careful not to insert the iSesamo tool too deep into the body of the phone as you may damage internal components that you cannot see.