I am on my 2nd iPhone 3G Otter Box Defender Case. I like the protection the case provides for the phone. However, if you plan to use the holster to carry the protected iPhone, you will need the extra protection because the the holster does not hold the phone securely. I have had it pop out while going down stairs, jogging across a parking lot and other places where one might have to move quickly. I was at a convention trade show and had to jog over to catch a friend and w/o my knowing the phone popped out of the holster and landed slightly under a table drape. It was a moment or so before i noticed it was gone. Upon retracing my path, i only found it because it was ringing. Other negative points include the fact that there is a moisture or ?? some type of touching between the screen protector and the screen which leaves a blob-looking bubble under it.......not pretty, I have had friends complain about feedback on their phone when talking to me on mine and it does cut down the audio abilities of the phone. It is too bulky to comfortably carry in a pocket, in my opinion.

On the plus side, as I mentioned, it has fallen out of the holster numerous times landing on concrete, carpet, tile, etc. and it does not seem to have been damaged.

I think otter box needs to work on the holster. The clip comes off ones belt very easily when you sit down, the phone pops out of the holster when one jogs or runs with it attached.

I was super-paranoid about the my iphone 3g so bought the otterbox defender case. We brought the phone on a recent technical diving trip so that we could use it to calculate our decompression obligations using the vplanner app. The phone was encased in the defender case and also stuck in a dry-bag on the boat. Unfortunately, the dry bag leaked a little, and the moister actually wicked into the otterbox case via the seam in the charge port cover and destroyed the phone. The phone was never submerged. In this case, the case did a great job at holding the water inside, but not keeping it out. 199$ later, I am looking for better alternatives.

The otterbox case for iPhone isn't advertised as being waterproof, for what it's worth. You can throw it against a brick wall and it'll be alright, though. :)

The otter box does NOT come off once it's put on. I just went to clean up my iPhone, and I tried in vain for 10 mins to get it off. Broke three nails and used up three paper clips trying to pry it off. Bad design. Also, I am on the phone a lot for work, and the outside of the Otterbox hurts my ears. After conversations, my ears smart for some time after. Again, bad design. Yes, it "defends" your phone, but at what price?