If ever hindi niyo po nakikita yung Developer options. Do the following:
1. Go to Settings
2. Select About phone
3. Tap Build number 7x
Wala po been doing this trick for awhile na po so far so good ang battery life. Actually it will save a lot of RAM for your phone and will prioritize...
It will limit your background processes to 3 or 4. Depende sa pinili mo. Alam naman po natin na ang daming background processes ang android device (especially for non-rooted devices). Thru this trick we can limit it up to 4 only.
Do the following...
1. Go to Developer options
2. Select Background process limit
3. Do not set it to Standard Limit but set it to At most 3 or 4 process.
4. Reboot device and your good to go!