The Cryptophone G10i was developed as a joint venture between HTC and GSMK of Germany, featuring special software that is capable of encrypting calls with 4,096 bit Diffie-Hellman key exchange and SHA256 hash function AES 256 and Twofish between Cryptophones. This means you can divulge all your dirty secrets to another person on a Cryptophone without feeling worried as to whether there is anybody else eavesdropping on you. Other features include a 1.3 megapixel camera and EDGE connectivity. The Cryptophone G10i comes with a steep price tag though at $2,080. Those looking for a higher end solution can settle for the Cryptophone 220 that takes the PDA form factor route.