Can't you effectively check that through the background activity time in the battery usage overview?
I don't think that tells you anything except gross offenders.
I ran this app call Adblock which creates an on-device VPN (checks dns request)
Found for example the kindle (or audible?) app still does telemetry even if cellular data is turned off (to a2z.com)
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I don't think that tells you anything except gross offenders.
I ran this app call Adblock which creates an on-device VPN (checks dns request)
Found for example the kindle (or audible?) app still does telemetry even if cellular data is turned off (to a2z.com)