I registered for the SIM card on December 6th. I traveled from Vietnam to Indonesia at 8 PM on December 5th. At the airport, I set up the SIM card in my phone so I would have internet access upon arrival. When I bought the SIM card, there was no mention that it would only be valid from 00:00 to 24:00 from the registration date. Upon arriving in Indonesia, I couldn't use it at all. When I tried to contact them, I was told the SIM had expired, even though I registered for it on December 6th. A terrible experience.