You may change your plan provided the Plan you are going to avail is higher if not the same Montly Service Fee to your current plan.
Downgrading possible BUT you will incur pre-termination fee.
Under section E of Globe's Terms and Conditions... you may click the highligtened word for complete details
They would not allow you. I was in unlisurf plan 1799 then I'm just trying to get sana unli call and text nalang kahit maging 2K pa yung monthly bill ko pero hindi daw pwede kasi it's downgrading daw? Downgrading e kahit nga 2k na yung bill basta unli call and text gusto ko na.