Confirm supported activation, practical condition and the seller's terms; no identifier or quick check proves the entire history.
Before paying for a used phone, check that you can use the actual device, not just that it looks good in photographs. Account locks, network restrictions, worn batteries and failed components can make an attractive price a poor purchase. Arrange enough time for inspection and a supported handover.
A clean-looking phone, serial number or successful startup does not prove that it is legitimate, fully paid for or free of hidden faults. Keep the seller’s identity, description and purchase terms clear. Walk away from pressure to skip an important check.
Agree the condition and purchase terms
Ask for the exact model, storage capacity, known faults, repair history and what is included. “Refurbished” should lead to a question about who inspected it and what they checked. Do not infer a standard battery condition or warranty from the label alone.
For an online order, save the listing and read the seller’s return conditions before paying. Ask what happens if the phone cannot be activated or differs from its description. A private sale, a professional seller’s policy and legal consumer protections can provide different routes.
Apple’s pre-owned iPhone checklist recommends reviewing the seller, return policy, physical condition, battery and parts information. Its specific menus apply to supported iPhones. Use the manufacturer’s corresponding guidance for another model.
Also use our unfamiliar-shop checklist when the purchase route is uncertain. This guide adds inspection of the actual phone; it does not certify a seller.
Resolve account locks through the real owner
Ask the seller to demonstrate that they control the device and can complete the manufacturer’s supported ownership-transfer process. Do not buy a promise that an account lock will be removed later. Do not use an unknown unlocking download or a service offering to bypass another person’s account.
Apple’s Activation Lock guidance says not to take ownership of a used device until it has been erased and removed from the previous owner’s account. Starting setup and encountering the previous owner’s account request is a stop sign, not a normal step for you to solve.
Google’s Android device-protection guide explains that a protected reset can require previously associated account information or the relevant screen-lock verification. A factory reset does not automatically establish an unrestricted handover. The seller should follow the supported instructions for that model and account.
Before the seller erases anything, they should protect their own files and recovery access. You do not need their password, private photographs or recovery codes. Let them perform their own authorized account actions.
Inspect the hardware before accepting it
With the seller’s agreement, examine the phone outside its case. Look for damage around the screen, frame, cameras and charging connector. Check whether the display responds across its usable area. Do not force a damaged plug or open the device yourself during a casual inspection.
Try the ordinary functions you will rely on. Use a harmless sample rather than reading the seller’s messages or browsing private files. If a particular function cannot be checked, record that uncertainty instead of treating it as a pass.
| Check | Useful observation |
|---|---|
| Display and touch | Readable image and response across the screen |
| Charging and battery | Charging works; available health information is understood |
| Microphone and speaker | A consented harmless sound check is understandable |
| Cameras and buttons | Ordinary controls work without obvious faults |
| Connectivity | The intended network and connection requirements are checked |
A few minutes of operation cannot establish long-term battery endurance or reveal every intermittent fault. Keep that limit in your decision. If a repair would materially change the value, obtain a reliable estimate before committing.
Check networks and remaining support
Ask your intended carrier whether the exact model and its network status are suitable for your service. Account activation, carrier locking, SIM or eSIM support and mobile-network compatibility are separate questions. A working Wi-Fi connection does not answer all of them.
Inspect whatever model and identifier information the supported settings provide, and compare it with the listing and receipt. An identifier can help a carrier or manufacturer answer a specific question; it is not a universal certificate of ownership or future usability.
Check the manufacturer’s update policy for the exact model. Google’s Pixel update guide distinguishes models and support periods. Do not copy one model’s remaining support to every Android phone, or assume that the date you buy second-hand restarts its support period.
A fictional purchase that pauses at setup
Imagine a fictional buyer, Morgan, checks a phone advertised as ready to use. Its display and camera appear functional. However, during the agreed handover, setup asks for the previous owner’s account.
Morgan returns the phone to the seller and pauses payment. The seller must resolve their own account relationship through the official route. A discount would not remove that requirement. If the seller cannot complete it, Morgan does not take ownership.
If handover becomes usable, Morgan still reviews condition, network suitability and the written terms. Clearing one account restriction does not establish that every other check passed.
Finish with a usable, documented handover
Keep the exact device description, disclosed faults, seller details and receipt. Complete the authorized setup checks appropriate to the phone before accepting it. Never disclose your own account password to let the seller “set it up for you”.
Our clear phone-photography guide can help you understand whether listing pictures show useful detail. For your existing memories, the photo-sync guide explains why deleting pictures and preparing a device are separate jobs. Your next step is to agree an inspection and handover before committing money.
Sources and verification
Editorial review 2026-10-18. Source check dates are recorded separately. Notes describe what each source supports and its limits.
View sources
- Apple: If you want to buy a pre-owned iPhoneChecked Inspect seller terms, physical condition, battery and repair information and supported hardware functions.
Limits: iPhone-specific menus and available information vary by model and software; a short inspection does not certify the whole history. - Apple: Activation Lock for iPhone and iPadChecked Do not take ownership while a used device remains linked to the previous owner's account; use the supported owner-removal and setup route.
Limits: No bypass, legitimacy certificate or guarantee about future carrier status is provided. - Google: Prevent others from using your Android device without permissionChecked A protected device reset can require previous account or screen-lock verification, and account removal is part of supported protection management.
Limits: Android steps vary by version and device; seller must perform authorized actions, not share credentials. - Google: Learn when Pixel phones get software updatesChecked Software support depends on the exact Pixel model and its stated support period.
Limits: Pixel is an example; do not generalize its periods to every Android device.