, literally "portable telephones," and are often known simply as keitai.
Much of the Japanese population own cellular phones, most of which are equipped with enhancements such as video and camera capabilities.
The wide variety of features, many original to or limited to Japan, lead to the term "Galápagos syndrome", as these resulting phones were dominant in the island nation of Japan, but unsuccessful abroad. There is some overlap of market segments between low-end smart phones and high-end feature phones, and many shared features.
PHS, which was initially developed as a cheaper alternative to 2G networks such as CDMA and GSM, was initially deployed in 1995, but is now only offered by one carrier, Y! As elsewhere in the world, smart phones have been growing extremely quickly.
Most phones can be connected to the Internet through services such as i-mode.
Japan was also the first to launch 3G services on a large scale.
The symbol for Aquarius (♒) resembles waves, so this would be used to mean 'sea'.
Examples are With the rapidly falling prices of cell phones in the mid 1990s, young people began experimenting with the short message service that the mobile phone companies started offering.
When the i-mode service became available, the mobile phone culture began flourishing in earnest as this service offered an E-mail application.
Magazines and television regularly make specials focusing on the current trend of how mobile phones are used by young people.
Users can browse text-only Internet sites, and many Japanese sites have sub-sites designed especially for cellular phone users.
One of the most popular services allows users to check train schedules and plan trips on public transit.