You need an unlocked Tri-band or Quad-band GSM Phone in Philippines. If you're not sure about this, check your phone manual or contact your carrier.  For unlock service, contact your carrier.  This product is ready to use.This sim has NO calling credit. <GLOBE PREPAID PLAN>Outgoing Calls (Same Network) : 6.50php/min- Outgoing Calls (Other Network) : 7.50php/min- Incoming Calls : FREE- Text : 1php/message <DATA Option>	 	 	 			1 Day Unlimited DATA - 50 PHP (SEND TEXT, "SUPERSURF50" to 8888)			5 Days Unlimited DATA - 200 PHP  (SEND TEXT, "SUPERSURF200" to 8888)			30 Days Unlmited DATA - 999 PHP (SEND TEXT, "SUPERSURF999" to 8888)			<Check Balance : 222 + Send>					<How to Topup : 223 + Send, then follow the instruction.>				<How to make international Call : 12800 + Country Code + Phone Number + SEND>