Remove SIM card trays.
Remove back cover.
Remove battery connector securing bracket.
Remove battery. Attention: Be careful with the adhesive and the flex under the battery.
Twist off the screws and remove the top securing bracket.
Release connector and remove front facing camera.
Release the connector and pry to remove headphone jack assembly.
Release power flex connector and LCD screen connector.
Twist off screws and remove bottom securing bracket.
Remove motherboard.
Remove rear facing camera by the way.
Remove loudspeaker assembly.
Remove earpiece speaker.
Remove power flex.
Done.
We are sorry that didn't separate the screen from mid-frame. Because we can't open a gap between them even after a long time heating and many times try. It's said there is glue but not the sticker around the screen. So if operate with force, it's at high risk to break that good screen and scratch the frame.
But you can do it freely when you have cracked the screen and need a screen replacement.
All info from: https://www.ifixit.com/Teardown/Huawei+Phone+p7+Teardown/42925#s98399