As I don’t know how long I may be in Thailand so can’t commit to a minimum term like a 12-month contract (1-month rolling is ok).
I’m hoping to find the best SIM to stick in my phone and get as much data as possible - ideally enough for laptop tethering when Wi-Fi isn’t immediately available also.
Is it possible to either sign-up in advance and get it delivered; or to get it from a shop and activate it that day? Or is there a waiting time of days for it to be sent and activated?