diff --git a/FAQ.md b/FAQ.md
index 742be2b..341fe5c 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -48,8 +48,8 @@ If you think Yet Another Call Blocker should have such an option, please [create
 
 ## What's that "Advanced call blocking mode"?
 
-"Advanced call blocking mode" is a mode that uses a modern call blocking method ([CallScreeningService](https://developer.android.com/reference/android/telecom/CallScreeningService)-based) which allows to block calls immediately before the phone starts ringing (a "classic" mode can't handle incoming calls fast enough, so your phone may ring for a very short period of time before the call is finally blocked).  
-For this feature to work the app must be set as a "Phone app" (Android 7–9) or a "Caller ID app" (Android 10+). The feature is not available on older Android versions.  
+"Advanced call blocking mode" is a mode that uses a modern call blocking method ([CallScreeningService](https://developer.android.com/reference/android/telecom/CallScreeningService)-based) which allows to block calls immediately before the phone starts ringing ("normal" mode can't handle incoming calls fast enough, so your phone may ring for a very short period of time before the call is finally blocked).  
+For this feature to work the app must be set as a "Phone app" (Android 7–9) or a "Caller ID app" (Android 10+). The feature is not available on older Android versions. This feature has no effect on battery life.  
 **Important**: the app doesn't provide/replace any in-call UI - call handling is delegated to your pre-installed Dialer app (or the "Phone app" selected by you on Android 10+), which is actually used to manage a call.  
 Obviously, on Android 7–9 you can't enable this feature **and** select some third-party Dialer app. This is a restriction of Android, I'm not aware of any way to work around it.
 
diff --git a/README.md b/README.md
index 646bf2c..3be0c56 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ At this point most of the essential features (one would expect from a call block
 
 * Automatic blocking of calls with negative rating, calls from hidden or locally blacklisted numbers. *Works offline.*  
   Call blocking should work on most Android versions (including Android 10).  
-  Some phones (like some Xiaomi) require to enable "Advanced call blocking mode".
+  Some phones (like some Xiaomi) [require](https://gitlab.com/xynngh/YetAnotherCallBlocker/-/issues/12) to enable "Advanced call blocking mode" or a monitoring service.
 * Local blacklist with wildcard support.  
   Import of NoPhoneSpam backup is supported.
 * Showing a notification with some caller info (positive/negative rating, category, number of negative reviews and such) when the phone's ringing. *Works offline.*