Need absolute privacy on your cell phone calls? Try the Cryptophone. The Cryptophone is a joint venture between Taiwanese smartphone maker HTC, and GSMK of Germany. The Cryptophone is a pretty normal clamshell phone with special software that encrypts your calls with "special software that encrypts calls with 4096 bit Diffie-Hellman key exchange and SHA256 hash function AES 256 and Twofish between Cryptophones."
The Cryptophone G10i pictured here is very similar to the HTC Star Trek. It is a quad-band GSM/GPRS phone with a 1.3 megapixel camera. Security doesn't come cheap as this phone sells for $2080. If you want security in a PDA phone you can check out the Cryptophone 220 but be prepared to shell out even more money.
The Cryptophone G10i pictured here is very similar to the HTC Star Trek. It is a quad-band GSM/GPRS phone with a 1.3 megapixel camera. Security doesn't come cheap as this phone sells for $2080. If you want security in a PDA phone you can check out the Cryptophone 220 but be prepared to shell out even more money.