GPRS, HSCSD, EDGE, 3G - when are they used?

If a phone is GPRS, HSCSD or EDGE compatible, what does this mean for the user?
Is it faster only when browsing the Internet, or does it use those superior data transfer speeds to send SMS and MMS messages faster? On my old 3410 if a write a long SMS message (sent as 3 concatenated messages) I must wait a really long time for it to be sent.
I do not intend to browse the Internet from my mobile phone or to make videocalls (3G speeds) in the next few years. So, would I benefit in any way if my phone was GPRS, HSCSD or EDGE compatible?
Thanks,
Mike

They are different networking and in particular packet data connection mechanisms (except HSCSD which is a faster, and more expensive, circuit-switched - dial-up - data connection mechanism on GSM networks).
They'll have no impact on SMS, but they will on sending and retrieving MMS, or anything else that requires a data connection (web or WAP browsing, email, instant messaging, application downloads, etc.).
Note also that the support in the phone is useless, if the network doesn't have the corresponding support, too.
http://en.wikipedia.org/wiki/Gsm
http://en.wikipedia.org/wiki/General_Packet_Radio_Service
http://en.wikipedia.org/wiki/Enhanced_Data_Rates_for_GSM_Evolution
http://en.wikipedia.org/wiki/High-Speed_Circuit-Switched_Data
http://en.wikipedia.org/wiki/3G
http://en.wikipedia.org/wiki/W-CDMA
http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System

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Hi gus:
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Moderator message - Please search before asking - post locked
Edited by: Rob Burbank on Sep 1, 2009 9:11 AM

Hi,
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Push the button "Activate Trace". Start transaction VA02 in a new GUI session. Go back to the Performance trace session.
Push the button "Deactivate Trace".
Push the button "Display Trace".
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V_EXT_IMP
V_EXT_ACT
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Click on the Display push buttons.
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http://help.sap.com/saphelp_erp2005/helpdata/en/73/7e7941601b1d09e10000000a155106/frameset.htm
http://support.sas.com/rnd/papers/sugi30/SAP.ppt
http://www.sts.tu-harburg.de/teaching/sap_r3/ABAP4/abapindx.htm
http://members.aol.com/_ht_a/skarkada/sap/
http://www.ct-software.com/reportpool_frame.htm
http://www.saphelp.com/SAP_Technical.htm
http://www.kabai.com/abaps/q.htm
http://www.guidancetech.com/people/holland/sap/abap/
http://www.planetsap.com/download_abap_programs.htm
http://help.sap.com/saphelp_nw04/helpdata/en/c8/1975cc43b111d1896f0000e8322d00/content.htm
/people/thomas.weiss/blog/2006/04/03/how-to-define-a-new-badi-within-the-enhancement-framework--part-3-of-the-series
/people/thomas.weiss/blog/2006/04/18/how-to-implement-a-badi-and-how-to-use-a-filter--part-4-of-the-series-on-the-new-enhancement-framework
How to develop BADI
Reward if useful.
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Aneesh.

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GPRS, HSCSD, EDGE, 3G - when are they used?

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