Buying a Used Phone in California

Where people buy used phones in California

OfferUp is especially active in Southern California and the Central Valley. Shops that buy used phones, including pawn shops and kiosks, report serialized items such as phones to California’s statewide pawn and secondhand dealer database (CAPSS), which law enforcement checks for stolen property. That makes selling a stolen phone to a shop risky for thieves, so many stolen phones end up in private sales instead.

Statewide, the same platforms as the rest of the US apply: Swappa and eBay offer buyer protection when you pay through them, while Facebook Marketplace, OfferUp and Craigslist deals are usually cash and as is. The US guide compares them.

How California’s climate affects a used phone

Coastal cities are mild, but the Central Valley, the Inland Empire and the desert regularly pass 100°F (38°C) in summer, and the inside of a parked car gets far hotter. A phone that spent summers in Fresno or Riverside on a dashboard can have a battery well below what its age suggests.

Heat: what to check

• Read battery health before you talk price: on iPhone, Settings › Battery › Battery Health; on Galaxy, the Samsung Members app › Diagnostics › Battery status.
• Ask whether the phone lived in a car or outdoors at work. Lithium-ion batteries lose capacity for good when they sit above about 95°F (35°C).
• Look at the screen edge-on for a lifted or bulging back panel: a swollen battery pushes the screen or glass out of line.
• Run the battery test and the benchmark. A worn battery often shows up as throttling under load.

California law and your rights

California’s smartphone theft law (SB 962) requires smartphones sold in the state to include a kill switch that can lock the phone remotely, turned on during setup. For a buyer, that means Activation Lock on iPhone and Factory Reset Protection on Android are almost always on, so the seller must sign out of their account in front of you. Deceptive sellers who are in business can be pursued under the Unfair Competition Law and the Consumers Legal Remedies Act. Neither gives you a warranty in a private “as is” sale.

Where to complain about a business: California Attorney General’s Office (Public Inquiry Unit) and your county District Attorney’s consumer protection unit.

Stolen, financed and locked phones

These rules are national. Dial *#06# on the phone and check that IMEI on the free CTIA Stolen Phone Checker. Ask whether the phone is paid off, because a carrier can blacklist it later if installments stop. Put your own SIM in and make a call to confirm it is unlocked. Details are in the US used phone guide.

Test the hardware before you pay

1. Open mxmob.com/check on the phone and tap Test all. It checks the screen, touch, speakers, microphone, cameras, sensors, buttons, charging and Wi-Fi in about 10 minutes, with no app.
2. Check battery health, and run the climate checks above for California.
3. Watch the seller sign out of iCloud or Google and reset the phone.
4. Put your SIM in and make a call.

The full list is in the used phone checklist, and the price checker tells you what the phone is worth.