Buying a second-hand phone can make your budget go further. You could get the camera, screen size or storage you want for less than buying the same model brand new.

The important part is knowing what you’re getting. Two phones with the same model name can have different battery health, cosmetic condition, repair histories and warranty cover.

Before you buy, check these eight things:

1. The exact model, storage and software support.
2. The condition and what the seller’s grade means.
3. The battery’s health.
4. Whether the previous owner’s accounts have been removed.
5. Network compatibility and device history.
6. Any repairs or replacement parts.
7. Whether the everyday features work properly.
8. The warranty, returns policy and seller’s contact details.

Here’s how to make those checks useful.

1. Choose a phone that suits how you use it

Start with what you need from your next phone.

If you mainly use WhatsApp, email, maps and social media, you may not need the latest flagship. If you regularly film videos, play demanding games or take photographs in low light, compare those features more closely.

Check the exact model name and storage capacity. An iPhone Pro and Pro Max, for example, are different buying decisions. A lower price may also reflect less storage.

Look at how much space you already use on your current phone. If it is nearly full, buying another handset with the same capacity could leave you clearing photographs and deleting apps again.

Software support matters too. The National Cyber Security Centre recommends avoiding devices that no longer receive manufacturer support, or are close to losing it. Check the specific model’s current support before buying. Read the NCSC’s advice on second-hand devices.

2. Understand the condition grade

Descriptions such as “excellent”, “good” and “Grade A” need an explanation. Read the seller’s grading guide before comparing prices.

At Phones From Home, our grades describe cosmetic condition. Our second-hand phones are cleaned, wiped and inspected before grading, and must be fully functional.

Broadly, our grades cover:

• Grade A: Excellent cosmetic condition with little visible wear.
• Grade B: Good condition with more noticeable signs of everyday use.
• Grade C: More substantial cosmetic wear, as explained in the listing and grading guide.

Read our full phone grading guide for the details.

If appearance matters to you, ask for clarification about marks on the screen, frame or back. Check whether the photographs show the actual handset or illustrate the model.

A cosmetic grade also does not tell you everything about battery health. Check that separately.

3. Ask about battery health

A phone can look excellent while its battery has seen years of use.

On a supported iPhone, open Settings → Battery, then look for Battery Health or Battery Health & Charging, depending on the model and software.

Maximum capacity estimates how much charge the battery can hold compared with when it was new. A reading of 90% is different from having 90% charge left today. Battery ageing can reduce the time between charges and affect performance. Apple explains battery health here.

Before buying, ask:

• What is the current battery-health reading, where available?
• Are there any battery service or warning messages?
• Has the battery been replaced?
• What does the seller’s warranty cover if a battery develops a fault?

Android battery information varies by manufacturer and model. Ask what testing has been carried out if there is no comparable percentage available.

There is no single percentage that guarantees all-day battery life. Your usage, signal strength, screen settings and the particular model also matter.

4. Make sure you can set it up as your own

A phone that still belongs to someone else’s account may prevent you from using it.

For an iPhone, the previous owner needs to remove Activation Lock. Apple advises against buying an iPhone while that lock is enabled. A welcome screen alone does not prove that activation will succeed. See Apple’s pre-owned iPhone guidance.

Android phones can also require a previously linked Google Account after a reset. The seller should resolve this before handing over the device. Google explains Android device protection.

When buying privately, confirm that the phone can complete setup without the previous owner’s credentials before paying. If an online purchase arrives locked, contact the seller promptly.

5. Check your network and the device’s history

Confirm that the phone will work with your chosen network and the SIM type you intend to use.

On an iPhone, go to Settings → General → About and look for Network Provider Lock. The wording “No SIM restrictions” indicates that it is unlocked. Apple’s checking guide.

Device history is a separate check. Ask whether the seller has checked the handset’s IMEI—the identifying number associated with the device—for lost, stolen or blacklist records.

At Phones From Home, we carry out IMEI and blacklist checks. Our phones are sold unlocked, as explained in our frequently asked questions.

Keep your receipt and order details. Clear records make it easier to identify the device and get support if needed.

6. Ask about repairs and replacement parts

Find out whether the screen, battery, cameras or other components have been replaced.

On supported iPhones running iOS 15.2 or later, Settings → General → About can display a Parts and Service History section. The information available depends on the model and repair history.

Apple uses labels including “Genuine”, “Used” and “Unknown”. An “Unknown” message can have several causes, so ask the seller to explain it. The available history does not cover every component on every model. Read Apple’s parts and service history guide.

A repair is something to understand when assessing a phone. Ask what work was done, which parts were used and what support is included.

7. Test the features you will use every day

If you can inspect the phone before buying, spend a few minutes trying it. When ordering online, check it promptly after delivery.

A useful basic inspection includes:

• Taking photographs with the front and rear cameras.
• Recording and playing back a short video.
• Checking the screen responds across its surface.
• Trying the buttons, speakers and microphone.
• Connecting to Wi-Fi and checking charging.

These are among the checks covered in Apple’s used-iPhone inspection advice.

Also ask about any advertised feature that particularly matters to you. For example, if you rely on face or fingerprint unlocking, confirm that it works.

8. Read the warranty and returns policy

Before paying, find out who will help if something goes wrong.

Look for a clear business name, working contact details and written terms. Read reviews for comments about how the seller handles questions and problems after delivery.

Check:

• How long the warranty lasts.
• Which faults it covers and what exclusions apply.
• How to request help or arrange a return.
• The conditions for changing your mind.

Phones From Home devices come with a minimum 12-month warranty covering manufacturer faults. Our published policy also offers 30-day change-of-mind returns for unused items, subject to its conditions. Read our refund and warranty policy before ordering.

A seller’s warranty is additional to your statutory consumer rights; it does not replace them. GOV.UK explains warranties and returns.

Common questions about buying a second-hand phone

Is a second-hand phone worth buying?

It can be, particularly when the model meets your needs and the price reflects its condition. Compare battery health, remaining software support and after-sales cover alongside the purchase price.

Does Grade A mean the battery is new?

At Phones From Home, the grade describes cosmetic condition. Ask about the individual handset’s battery health and replacement history separately.

Are second-hand and refurbished phones the same?

Both can describe previously owned devices. “Refurbished” usually indicates inspection and preparation for resale, with repairs where needed, but sellers’ processes vary. Ask what has actually been checked or changed. Phones From Home sells new sealed and pre-owned devices.

Can I trade in my current phone?

Yes. Phones From Home offers selling and trade-in options. Visit our Sell Your Device page to explore a quote for your current handset.

Find your next second-hand phone

At Phones From Home, we help customers in Boston, Lincolnshire, and across the UK choose new and pre-owned technology.

When comparing a handset, have its model, storage, condition, battery information and warranty details in front of you. That gives you a clearer picture of what you are paying for.

Browse our current pre-owned phones and devices.

If you would like help choosing, tell us your budget, the phone you currently use and what you would like to improve. You can email sales@phonesfromhome.co.uk.