+1 I've been using Kaspersky for Android for a couple of months and still like it. In fact, I use Kaspersky for all my devices.
The question was "trusted" not "best" so as long as members state what they are using as a trusted app, the thread will continue. If it devolves into a what's best, it will be closed!
I've been using Zemana Mobile Security for quite a while. https://www.zemana.com/free-mobile-security
same here: full featured (not crippled), for free and less impact and NO annoying ads for "buy me" like Kaspersky, DrWeb, BitDefender, Avast, Avira which are crippled or in test period - and ofc sniffing a lot user behavior in special for android. forget MBAM for android, it wont find malicious apps like sophos (either from store or other ways round) sophos assists here adguard premium which includes a firewall and prevents unwanted calls or apps. no need for web? Stay inside and dont bother!
There is the new advanced google protection but you cannot install from third parties like the standard. YOu have to do it via you computer so I decided to leave it.
I also put my trust in Sophos Intercept X For Mobile. It's a very comprehensive application and, dare I say it - it's free! I've been using this application for a couple of years, I guess. I am in no way whatsoever associated with Sophos.