Seriously, sometimes it's just AT&T's network having issues, especially if you hangup and try again, and it works just fine. This happens to me quite a lot.
It looks like these tabs are supposed to work like those Command things for hanging stuff on the wall - pull it till it stretches and then it comes right off.
You could be super lucky like me, the tabs break off, then try to pry it out with my pocketknife, then a real quick trip out the back door and drop it on the ground because the battery caught fire!
Luckily, once I got the mess cleaned up (the heat was sufficient to dislodge the adhesive by turning it into liquid sticky goo) and the replacement battery installed, it amazingly still worked.
It looks like these tabs are supposed to work like those Command things for hanging stuff on the wall - pull it till it stretches and then it comes right off.
You could be super lucky like me, the tabs break off, then try to pry it out with my pocketknife, then a real quick trip out the back door and drop it on the ground because the battery caught fire!
Luckily, once I got the mess cleaned up (the heat was sufficient to dislodge the adhesive by turning it into liquid sticky goo) and the replacement battery installed, it amazingly still worked.
Probably a CDMA (Verizon) iPhone 4.
Step 14 is missing: insert small spudger or screwdriver on left and right sides to separate the display panel from the metal backing plate.
Duh!