Specifically, Twitter temporarily disabled the ability for users to tweet via text messages. If you don’t already know, you could actually send tweets using SMS. This is done by sending your tweet to the numbered code. In Malaysia, only Maxis and Celcom supported this, with the code for both telcos being 28933.
— Twitter Support (@TwitterSupport) September 5, 2019 It’s mostly a legacy feature from when the dedicated app wasn’t a thing. That said, there appear to be certain regions that depend on SMS to be able to tweet. The micro-blogging has since re-enabled tweeting via text only for these locations. Beyond that, there doesn’t seem to be any indication that it will be re-enabled elsewhere for now. Last week, Dorsey’s Twitter account was hacked by a group calling itself the Chuckle Squad. The hackers made the account tweet racial slurs and bomb threats, which were removed quickly after the fact. The incident was blamed on the telco Dorsey was on, saying that it’s a security oversight on the telco’s part. (Source: Twitter [1], [2] via The Verge)