The SMS messages were kind of a guest in their messaging app and were answered through Signal alongside Signal messages. There was also the issue, and this is not something that would’ve hit users in the US or in sort of historically rich countries, but in a number of disinvested regions, we were having people who would confuse an SMS message for a Signal message, send a bunch of SMS texts, and because SMS messages are billed at a very high rate, would get a huge bill when they were thinking they were using their data to use Signal. But we did a lot of work trying to disambiguate SMS between Signal messages and this is no fault of the people who use Signal.