MobileWorld - GSM FAQ

	[1] What is GSM
	What is GSM
	[2] GSM, DCS, PCS
	What is the difference between GSM, DCS and PCS Can I use my GSM 900 phone on a DCS 1800 or PCS 1900 Network What is fullrate, halfrate and enhanced fullrate What is cell broadcast
	[3] GSM Security
	Is GSM secure
	[4] Signal Question and Problems
	Why can't I use my phone more then 35km's from a base station My phone shows full strength yet I can't make a call I can use my phone up to 120km's away
	[5] SIM Card Questions
	Why does my SIM card have more memory then my friends What is SIM locking What is the difference between a small and large SIM card
	[6] Handset Questions
	How much power does a digital phone produce What is the IMEI number
	[7] Roaming Questions
	What is the difference between plastic/card roaming and automatic roaming How are calls to and from me charged