Yes I've been yelling at my phone carrier about the same issue.. its screening my calls and texts and the contents I see. I've posted this here many times and haven't had any responses..
The latest update put Mcm client on every phone.. mcm Clint is a tech company for corporate phones to censor content, remote access, and easy file share inside the company.. but now it's on every private phone… it crashes my phone constantly and burns the battery and moves pictures and dose crazy shit with numbers.. it's in the carrier hub.. they suspended me for bringing it to there attention