1. Trend -> From Cellular Phone to Information Tool

+ graphic information

+ general purpose

+ internet capable

• low data transmission rate (9.6 kbsec)

• large & heavy

• two devices

• expensive investment & communication fees

+ WAP protocol

+ only alpha numerical information seek

+ phone and information tool in one device

+ relatively low cost

- dedicated services required

- not internet capable

• low data transmission rate

(9.6 kbsec)

• expensive communication fees

+ Internet protocol capable

+ graphical information seek

+ phone and information tool in one

device

+ relatively low cost

+ data dependent communication fees

+ no dedicated services required

• medium data transmission rate (GPRS, ...)

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