here are some tips for people installing InvisibleShields (or BSE, etc... they're all the same). I've done this before and have a few tips:
1: Make sure your phone is spotless before you apply the skin. I use a microfiber cloth and a cleaning solution. No use installing one of these with streaks/fingerprints/dust underneath!
2: Dump out the application spray into a dish and add maybe 1/2 cup of water (depending on the size of the dish)... just enough to be able to fully submerge the skin. This ensures that the entire skin gets wet and you have really no worry about getting fingerprints on it.
3: use the camera hole as a guide. Since it's the only real obstacle on the back, make sure it's lined up right. Don't be afraid to peel it up 2-3 times (took me 5 tries with the 3G), dunk it back in the solution, and try again.
4: Make sure the skin is lined up PERFECTLY before you begin squeegieing out the solution. I like to do this whole thing on a paper towel, so that any runoff gets soaked up into the towel and not my phone. After doing this 3 times already, I've found that I'm somewhat careless about getting water on the phone. I don't suggest it, but I find that doing what I need to do to make the skin looks perfect in the end. I've had no problems with water damage.
5: Make sure ALL of the bubbles are out of the center of the skin. Keep checking throughout the project -- sometimes they sneak back into the middle, and once the skin has begun to set it's impossible to get them out.
6: BE PATIENT! I can't stress this enough. The corners WILL take you every bit of 45 minutes to get to finally stay down. Don't give up, and don't try to cheat. Set aside at LEAST an hour for this project, and be prepared to use most of that time trying to get the corners to stay down. Sometimes letting the skin dry a bit helps with sticking the corners -- just make sure that you don't get your fingerprints all over the corner flaps. It's an art, treat it like one 🙂 If you DO get fingerprints all over the flaps, just wet your fingers in the solution and rub them out of the skin. It'll set you back about 5 minutes, but it's worth it.
This is most definitely harder than the 2G iPhone... I admit, my skin does not look perfect, but it is applied correctly and does look pretty good.
Edit: bigscotal: the lettering/apple logo is beneath a few layers of plastic. I never had a problem with my 2G iPhone, but there should be zero problems with the iPhone 3G.