A sneaky little way of cheating customers of a few bucks here &there
I'm updating my review after my experience yesterday. I noticed that my data was almost used up, so I went to purchase a new data plan. Unfortunately, OneSIM doesn't allow you to buy a new data plan until the old one's used up. So I deliberately used up my data, checking how much I had remaining every few minutes. When I received an SMS that my plan had been used up, I immediately put my phone in flight mode. I then purchased a new data plan. But right before doing that, I noticed my balance was $4 lower than it was earlier that day. So I went on OneSIM's chat support and explained what had just happened. The guy agreed this lower balance was due to the lapse in between when my data plan was used up and when I received an SMS about it. And he did not give a flying flip. He said it was _my_ responsibility. I'm not sure how something that wasn't humanly possible was somehow my responsibility. It's particularly deceptive considering that OneSIM is always encouraging customers to buy a plan in order to avoid exorbitant charges for data. The first piece of spaghetti he threw at the wall was to suggest that I sign up for automatically renewing data plans. Well, that's exactly what I used to do, and OneSIM makes it clear that the same thing can happen with automatically renewing data plans. Next, he took this as an opportunity to upsell me to the DataMax SIM card. At my expense, of course. After his prior suggestion, I had no reason to trust a word he said. Unfortunately, I don't know of any other SIM card service providers for international travel that are a better option.