Customize Power Saving Mode on the Galaxy S3

Problem: You want to change/see what Power Saving Mode does on your S3.

Solution: Settings > Power saving mode > toggle/check whatever you'd like

Not Syncing Calendar after Jelly Bean Update

Problem: You just upgraded your Galaxy S3 to Jelly Bean and synced your Google account, and your Calendar entries are missing.

Solution: Go to Calendar → Click on "Calendars" (top center) → Check all the calendars you want → click "Done" (top R)

Change Lock Screen App Shortcuts

Problem: You want to change the shortcuts on the Lock Screen of your Android ICS device.

Solution: Settings → Security → Lock Screen Options → Shortcuts (don't click the toggle)

Edit Android Custom Dictionary

Problem: You accidentally inputted a word that's not a word, or you just want to edit the Custom Dictionary on your Android device.

Solution:
4.0.4 Ice Cream Sandwich: Home Screen > Settings > (Personal) Language and Input > (Keyboards and input methods) Samsung keyboard > Predictive text > My word list