Just a recent observation lang. Twice na register ko yong sim(pink smart sim) ko with surfmax50. Yong expiry niya is always good for 2 days. I dont know what happened pero im thinking may glitch na naman si smart dito. The 800mb limit still applies pero yong surfmax50 mo is good for 2 days na. Bale 25 per day nalang. Not bad if really need a connection. By the way, location ko is visayas. Baka may maka explore more ng glitch na ito baka pwd mas ma extend. Surfmax50 to 2200.