Soatok also has a very good post about XMPP
https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/
Matrix is great, but not the best, recently, less than a week ago, the Matrix.org server went down due to a drive failure, so they had to recover all the server data using a backup, so you are better off using a homeserver that is not matrix.org.
Also, all clients of matrix kind of suck. Element desktop is extremely laggy and sluggish to use. Element for Android is deprecated, ElementX, their new android client is not completed and lacks basic features. There is other clients but all of them have their downsides.
Access is restored tho: https://mastodon.social/@netblocks/115170319982458225
Weird move
Use bandwhich to see which programs are using traffic ;)
Samsung used to be good. I used to always buy samsung but since I can't affort a "high end" device, I go with the medium end ones, and samsung medium end ones are terrible for the price. So instead of getting a medium end samsung, you can get something better and cheaper on another brand
I don't think taking screenshots of everything you do every few seconds is telemetry.
And what if I have Instagram but I don't publish anything on it? lol