For the extra paranoid (or those who like collecting different cases for their iPhones), there is a bulletproof iPhone case available in Japan. The case weighs even more than the “brick” cellphone of the 1970s (4.6 pounds, as compared to the “brick” cellphone’s 2 pounds), and can even withstand .50 cal bullets because the case is one inch thick and made out of steel plate.
Here is a YouTube video demonstrating the stopping power of the bulletproof iPhone case, developed by Japanese company Marudai: