i-Maxed mo sya ng 2000, pero i noticed i have a credit limit of 1500 before pero minsan bill ko lagpas sa limit. Not sure if anti bill shock really exist or for UnliData lang sya.
For my plan 1799, from credit limit of php2500 I requested for an adjustment and Globe increased it to php5000. At the time of my request, which was last 2012, Globe customer care specialist informed me that I can request for increase in credit limit amount for up to x2 (times 2) of my existing credit limit. Though I think they'll approve the request based on your financial capability and for how long you've been their subscriber.