I've been pondering about if to create a poll, as there are several posts and scattered comments from users reporting their device has been blocked.
I've created this post/poll to have an idea on which networks are going rough on blocking.
If your device has been blocked, upvote the option (network) which you were on and got blocked.
Optional – Mention your device model in comments; which has got blocked.
Try a Vodafone sim, will most likely be fine.