Network tradeoffs

Small or large decks? If users are using GPRS, they are being billed by transferred bytes, not by time. They can sit through long text walls without complaining.
CSD users want concise information fast, the clock ticks for them.

As long as files stay under 1.5 KB, they will load nearly instantly (within 5-10 seconds) regardless of the access method. CSD will normally feel snappier for WAP due to lower network latency.

08: Card tricks
Lessons
Glossary

CSD: Circuit-switched data, basically dial-up via cellular. It is slow, has low latency and is charged by the minute.

Deck: A .wml file with WAP cards inside.

GPRS: GSM Packet Radio Service, it is a bit faster, has high latency, is charged by the byte or KB, and allows one to read already-loaded pages comfortably.

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