A disaster 1 3

I bought this shell to film the seabed surface in Martinique with fins and snorkel.
I tested the bottom of a 200 liter tank before my trip without the iPhone, no leakage.
Once there, I followed the instructions in the documentation to the letter and have it placed my brand new iPhone 5s.
After 20 minutes the hull area took seawater, my iPhone 5s did not survive (the power button is being entered circuit, and it has continued to turn back before failure General)
Back in France, I handed the empty shell in the 200-liter tank, no leakage
It seems that the presence of the iPhone 5s make non watertight hull