For me it was one more application that's constantly pinging my location has access to all my data, and is actively feeding it upstream. Though I did keep hangouts (google voice and sms integrations), after facebook messenger and seeing my battery not make it through a full day (morning until I plug in at night), I removed pretty much all the social apps from my phone.
When I looked at my battery usage stats, the top offenders were facebook and the like, despite not even being used for days at a time. Now I use facebook through the mobile-web interface, and haven't looked back. The only apps I regularly use on my phone are the browser, mail, maps and hangouts. I don't have many others even installed (lastpass, authy), and my phone now makes it a full 24hrs+ before power goes off. (just got a new phone yesterday, so that profile may be different now).
My fit wasn't separating messenger out... it was having another app soaking up cpu/battery usage.
When I looked at my battery usage stats, the top offenders were facebook and the like, despite not even being used for days at a time. Now I use facebook through the mobile-web interface, and haven't looked back. The only apps I regularly use on my phone are the browser, mail, maps and hangouts. I don't have many others even installed (lastpass, authy), and my phone now makes it a full 24hrs+ before power goes off. (just got a new phone yesterday, so that profile may be different now).
My fit wasn't separating messenger out... it was having another app soaking up cpu/battery usage.