ringtone polyphonic Decreasing semiconductor line widths have caused computing speed and memory size to roughly double every 18 months for the last 40 years. Similar trends are already seen in the mobile Internet, where the need for lower power consumption requires different circuit designs. Phones released in 2003 had speeds in the 100 MHz to 200 MHz range, and speeds greater than 500 MHz are expected by 2005. Phones with more than 5 megabytes of internal memory were also released; some could save 2,000 photos (taken with a 300,000 pixel camera), 2,000 ringtones (with 40 polyphonic tones) or 100 Java programs. Network speeds will also increase primarily through the diffusion of third generation services. According to Qualcomm, these services may cause packet charges to fall as low as $0. 022 per megabyte, or 1/500 of current i-mode charges. If data charges were to fall as low as $0. 022 per megabyte, a three minute MP3 file could be delivered for as little as $0. 07, and a two-minute, medium resolution video clip could be delivered for a cost of approximately $0. 13.