Buying a second-hand phone: what to check before you pay
A good second-hand phone is a sensible buy. A bad one costs you twice — once when you pay, and again when it stops working or turns out to be someone else's. Ten minutes with this list covers both risks.
Last reviewed: 11 October 2026
Paperwork and identity first
- Ask for the original bill and the box. Match the IMEI on the screen (*#06#) with both.
- Send KYM followed by the IMEI to 14422. If the reply names a brand and model, check that they match the phone in your hand. Avoid a phone reported as black-listed, duplicate or already in use.
- Buy from someone whose identity you can note — a shop, or a person who shows ID. Ask for a written receipt that names the phone and its IMEI.
Locks
- iPhone: Find My must be off and the Apple ID signed out, in front of you.
- Android: the seller's Google account must be removed before the reset, or the phone may ask for their password after a reset.
- Then reset the phone and set it up yourself before you leave.
Working condition
- Screen: touch every corner; look for dead spots, lines and burn-in on a white screen.
- Cameras: front and back, photo and video, focus at near and far.
- Sound: make a test call — earpiece, loudspeaker and microphone.
- Charging: plug in your own charger; the port should hold firmly and the phone should show it is charging.
- Network: insert your SIM; check calls, mobile data, Wi-Fi and Bluetooth.
- Battery: on an iPhone, Settings, then Battery, then Battery Health. On Android, watch how fast it drains during your checks.
- Buttons, fingerprint or face unlock, and vibration.
Price
- Compare with the price of the same model and storage elsewhere. A price far below the market is a common warning sign.
Keep after you pay
- The bill or receipt with the IMEI, the seller's name and contact, and the date. If a question ever comes up, these show you bought in good faith.
Frequently asked questions
- Is it safe to buy a used phone from a stranger online?
- It carries more risk than buying from a shop that records the seller's identity. If you do, meet in a public place, run every check above, and get a written receipt with the IMEI.
- What if the seller has no bill?
- Many genuine phones lose their bill. Then the IMEI match, the KYM status and the seller's verified identity matter even more — and a signed note from the seller of where the phone came from.
- Is a refurbished phone the same as a second-hand phone?
- A refurbished phone has been repaired or reconditioned before resale, often with a seller warranty. Run the same identity and lock checks on it.
Sources
This checklist is general guidance. It cannot guarantee a phone's condition or history.