Want to know why you have been losing followers on twitter lately?

No its not a witchhunt, nor something you tweeted, or an organic decline - i.e people choosing to unfollow you.

Why: Account that were created via SMS are no longer supported on twitter.

A thread
In a statement provided to Mashable, Twitter said that:

“We are removing accounts that were created via SMS as we no longer support this technology and because these accounts have a high risk of becoming compromised...
As a result, some accounts may see a drop in followers. We want people to have confidence that their follower counts are meaningful, accurate and reflect active accounts on Twitter, and this is part of our ongoing work to ensure that.”
See the tweet here where @TwitterSupport made the announcement of disabling the sms feature (for a few countries though) which prompted the accounts purge.
You can follow @rukky_nate.
Tip: mention @twtextapp on a Twitter thread with the keyword “unroll” to get a link to it.

Latest Threads Unrolled: