Speed up your slow LG G Stylos without downloading anything or rooting.
Developer. options needed. To get to that on this phone follow these steps:
1. Go to settings
2. Go to General
3. Scroll down and click "About Phone"
4. Click "Software info"
5. Click "Build number" until it says you are a developer.
Go back and at the bottom of General in Settings you will see developer options.
Also delete any apps that came with the phone you do not use that may be running in the background.