Used electronics have a unique risk: activation locks and lingering accounts. A bill of sale that confirms the device is unlocked and wiped protects the buyer from a useless brick and the seller from a "you sold me a locked phone" dispute.
What to include
- The device — make, model, storage, and serial number or IMEI.
- Condition — screen, battery health, any faults, sold as-is.
- Accounts removed — confirm it’s signed out of all accounts and any activation lock (e.g. Find My / Google account) is off.
- Price, payment, buyer, seller, and date.
That "accounts removed" line is the one people skip and regret. Put it in.
Sign and hand over
Describe the sale, both sign, each keep a copy.