2008年7月27日 星期日

SMS, MMS, WAP, GPRS, 3G

SMS, MMS, WAP, GPRS, 3G
SMS: short message service, text only, 160 chars
MMS: multimedia message service, richer contents, ...

WAP is based on SMS?
WAP is based on GPRS?
MMS is based on WAP?

3G also use GPRS?
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