mga sir.. im having a problem regarding my new phone. My mom bought it in Korea as a gift for me and sent it here in the Philippines. At first I dont have any concern with this phone but as days goes by, I'm being bugged or how should i put it, Ang Cp ko po ay walang option para sa 3g signal only po.. Merong 3g signal dito samin but somehow,somewhat di po nalalock ng cp ko.. GSM lang.. please kung sinu man may alam paanu lagyan ng option sa settings or may apps na pang lock ng 3g or 4g signal.. PLEASE DO SHARE IT SIR/MA'AM..