Eto po workaround.
1. Go to Settings > More > About Phone
2. Go to Build Number Section3. Tap it 5x until may mag pop-up.
3. Keep pressing it after 5 consecutive times and continue tapping it hanggang may lumabas na message na "Developer Mode has been enabled".
Para kasi sa akin importante ang Developer Options lalo na ung mga functions (USB Debugging, Windows Animation Scale, Windows Transition Scale, Show touches, Stay awake etc.) especially kung gagamit tayo ng Android SDK at ADB via Windows. Para sa mga modders, kakailanganin nila ito for their own preference.
Naishare ko lang po :) Hope it helps a bit.