Explain i830 Mods

Can you tell me exactly what each of these mods do to my phone:

-String Modz(Power up, NEXTEL, T9 TEXT ENTRY)
-Palletes(6 MAX to phone)
-MO-SMS Enable(Text Messaging)
-Unlocking

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ill try to help a lil bit..

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-UNLOCKING--->this is something you get done to ur phone so you can use it on any iDen carrier...i.e. Boost Mobile,Nextel,Etc.