EDIT: THIS IS RESOLVED IN THE LATEST SYSTEM UPDATE, DOWNLOAD THAT!





Have you noticed that battery has been poorer beginning in the past 1/2 days? That's not a coincidence.



The new Google Play Services update is slowly rolling out to all Android devices, it happens in the background without you knowing and it occurs over the course of a week (so you might not have been hit yet - But you will be).



This update has a flaw with devices running a custom ROM (eg CyanogenMod) where it keeps checking for updates (Specifically, the SystemUpdateService keeps the device awake), and thus using battery up very fast.



How to check if you are affected by this or not:

Use your phone for a day as normal, when it has been used for a decent amount of time do the following...

1. Go to settings and tap on battery.

2. In the battery menu, look for "Google Services" - If this is using more than about 10% then you are probably affected by the bug.



Here's the temporary fix if you are affected: (NON ROOT ONLY)

1. Go to settings and press Privacy

2. Press on Privacy Guard

3. Press the Menu key and then tap on advanced

4. Go to the Device tab and tap Google Play Services

5. Scroll to "Keep Awake" and change it to "Denied"

6. Close the menu, you are done!



This issue has occurred before in the past with the 25R update (A long time ago at the device launch but was fixed by a CyanogenMod update, but it affected devices for weeks before it was fixed.)



Here's the fix if you are rooted: (ROOT ONLY)

This fix is better because it actually fixes the real issue, rather than just blocking Google Play Services from waking your device up. It also survives reboots.

1. Download the "Disable Service" app from the Play Store.

2. Open and go to the "System" tab.

3. Scroll and find Google Play Services and tap on it.

4. Check "System Update Service"

5. Done!



IMPORTANT MESSAGE:

If you have applied these settings and notice crashes or issues you didn't experience before, follow the same steps you did before but change the Google Play Services Keep Awake setting to Allowed again.

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