The iFixit team uses a suction cup and "some gentle spudgering" to reveal the innards. (There's a booby trap, but you'll have to check that out in the full teardown.)
iFixit's suction cup and spudger (shown) enabled the team
to open the iPhone 5s carefully.
Once inside, iFixit says:
As we ready ourselves to delve into the delightful innards of the 5s, let's check out some of its tech specs:
Apple A7 processor with 64-bit architecture
M7 motion co-processor
16, 32, or 64 GB Storage
4-inch retina display with 326 ppi
8 MP iSight camera (with larger 1.5µ pixels) and a 1.2MP FaceTime camera.
Fingerprint identity sensor built into the home button
Available in three different colors: space gray, silver, and gooooooold (or as we call them, Not-at-all-the-Color-of-Space, Second Place Medal, and Bling!).
The big reveal: inside the iPhone 5s.