G: Yellow means Low Power Mode is on.

Low Power Mode kicks in automatically when your battery drops to 20%, but you can also turn it on manually in Settings → Battery or through Control Center.
It reduces background activity, limits screen refresh rate, and dims some visual effects to stretch battery life.

To turn it off, just:

• Go to Settings → Battery → Low Power Mode and toggle it off, or
• Tap the yellow battery icon in Control Center if you’ve added it there.

It’ll also switch back to normal (green or white) automatically once your charge goes above 80%.

G: Here are some examples of secondary offenses — things police can only ticket you for if they’ve stopped you for another reason:

• Jaywalking (in many places)
• Failure to wear a seatbelt (in states where it’s a secondary law)
• Burned-out taillight (in certain jurisdictions where it’s not a primary stop reason)
• Improper display of a license plate (like a missing front plate where required)
• Tinted windows too dark (in states that don’t treat it as a primary offense)
• Using a phone while driving without hands-free (in states where it’s secondary)
• Expired inspection sticker (some states)
• Riding a bicycle without required lights or reflectors (at night)

The exact list varies a lot by state or city — something that’s secondary in one place can be primary in another.

If you want, I can give you a breakdown by U.S. state so you can see what’s primary vs. secondary.

G: Here are a few secondary offenses that some lawmakers, police, or safety advocates argue should be upgraded to primary offenses:

• Seatbelt violations in states where they’re still secondary — advocates say primary enforcement increases seatbelt use.
• Texting or other phone use while driving in secondary-law states — safety groups push for primary enforcement to cut down distracted driving crashes.
• Riding without a helmet (motorcycles, bicycles, e-bikes) — often secondary unless tied to another traffic stop.
• Failure to yield to pedestrians in crosswalks — treated as primary in some states, but not everywhere.
• Excessively loud exhaust or modified mufflers — some want it primary to cut down noise pollution.
• Child car seat misuse — sometimes secondary unless combined with another infraction.
• Unsecured loads in pickup trucks or trailers — safety advocates point to highway debris accidents.
• Tint violations — law enforcement often pushes to make them primary for officer-safety visibility reasons.

Some of these already are primary in certain states, so the debate is usually about uniformity vs. local discretion.

If you want, I can also list things that are never primary anywhere but have regular proposals to change that.