Since last week I am seeing substantial battery drain on my Xperia M2 and the power management 'app' says that it is almost all (82%) due to bluetooth.It does not say what is requesting the bluetooth. I cannot yet identify the cause, so cannot say that GC is causing it but GC Mobile Android looks like it got updated last week and is my heaviest user of BlueTooth (to my Fenix 3 and VSHR) - is anyone else suffering from serious battery drain since about the end of January?
I can confirm -- this is definitely Garmin Connect's fault on Android devices, and it appears to impact the last two versions (including the current one.)
I've traced this pretty-thoroughly and not only does the app remain active and blast your battery (even when the watch has its bluetooth interface shut off!) what's worse is that it also holds a wakelock even when not spinning on the CPU, which at least triples standby power consumption (when the screen is dark and phone otherwise idle) as a wakelock prohibits the CPU from dropping into its deep sleep state.
This needs immediate attention; once Connect starts doing this only a force close or shutting down Bluetooth entirely stops it.
After some more experiments, I can now confirm this is GC.
Since I canot tolerate my phone going to empty within 10 hours I have had to disable GC. This makes my VSHR virtually useless.
The latest (last couple of days) update appears to be forcing Bluetooth into LE mode all the time. This turned my bluetooth headphones worthless for music while running!
I had to remove Connect and then reboot the phone to clear the condition. Download Connect again and set it up against my Fenix 3, it comes right back.
Phone is a BlackBerry Priv, Android 5.1.1.
Connect developer folks -- something is very, very wrong with the last couple of updates!
Got also battery drain with my Nexus 5, Android 6.0.1 (patch level feb 2016) when Garmin Connect App is installed. Removed the App and the phone behaves normal again.
After it having been OK all day yesterday, I got to work this morning and discovered that in a little more than 2 hours my battery has already lost 27% charge, and again the loss seems to be 92% Bluetooth.
Another symptom that I don't think I mention before is also back again - that I cannot switch BlueTooth off. I have to power-cycle my phone.
My garmin was left on overnight charging. My phone was also on with the bluetooth left on and connected to the garmin. As you can see below this is my battery use on the Nexus 4. Is this normal? seems to have totally killed my phones battery in 8-9 hours of not actually doing anything. As stated both phone and garmin were connected but left idle.
