The iPhone 15 is still a strong phone to sell in 2026. It has USB-C, good camera performance, solid everyday speed and enough recent demand to make it worth checking before it loses more value.
The quote is not based on the model name alone, though. Storage, battery health, condition, colour, timing and account status can all change what your phone is worth.
Here is what to check before you sell your iPhone 15, and how to avoid the small mistakes that can slow down payment.
Start with the exact model
Make sure you are checking the right iPhone 15 model before comparing quotes. The standard iPhone 15, iPhone 15 Plus, iPhone 15 Pro and iPhone 15 Pro Max are priced differently.
Storage matters too. A 256GB phone will usually sit above the same model with 128GB, as long as the condition is similar. That does not mean storage beats condition every time. A cleaner lower-storage phone can still be worth more than a higher-storage one with heavy wear.
If you are comparing options, start with the wider Apple iPhone trade-in page, then use the exact device page for your model.
Condition changes the quote quickly
Condition is one of the biggest value checks. Before sending your iPhone 15, look closely at:
- screen scratches, cracks or deep marks
- dents around the frame
- camera lens damage
- back glass marks or cracks
- charging issues
- Face ID problems
- speaker, microphone or button faults
Be honest when choosing the condition. A clear quote is easier to confirm when the details match the phone that arrives. If there is a fault, say so early rather than hoping it will be missed.
For a wider look at how condition affects value, see our guide to getting the best price when you sell your phone.
Battery health still counts
Battery health can affect buyer confidence and resale value. A healthy battery makes the phone easier to assess, especially if the rest of the device is clean.
You can check it on the phone under Settings, Battery, then Battery Health and Charging. If the battery has a service warning, mention it when checking your quote.
Battery health is not the only factor, but it helps explain why two iPhone 15 handsets with the same storage can receive different assessments.
Colour can make a small difference
Colour is rarely the main value driver, but it can still matter. Some colours are easier to resell because more buyers want them. Others may sit a little longer.
Do not overthink it. Model, storage and condition usually matter more. Still, choose the correct colour when getting your quote so the assessment record is accurate from the start.
Timing matters after upgrade cycles
iPhone values tend to move as newer models become common. When more people upgrade, more used phones enter the market, and that can put pressure on older model prices.
If your iPhone 15 is sitting in a drawer, waiting usually does not help. Checking the value now gives you a clearer decision: sell it, keep it as a spare, or compare it with private-sale prices.
Our guide to phone depreciation explains why some phones hold value better than others.
Remove accounts and prepare the phone
Before you send your iPhone 15, remove iCloud and Find My iPhone, back up anything you need, sign out, and erase the phone. A locked device can delay the process because it cannot be properly checked.
Also remove the SIM, case and any personal accessories unless you have been asked to include them. Pack the phone securely so it arrives in the same condition it left you.
Postage and insurance
SellMobile provides a prepaid Royal Mail label with up to ÂŖ150 insurance. If your iPhone 15 is worth more than ÂŖ150, we advise using Royal Mail Special Delivery so the full value of the device is covered in transit.
That extra cover is worth considering for recent iPhones, especially if the phone is in good condition or has higher storage.
Check your iPhone 15 quote
The best way to judge the value is to check the exact model, storage and condition rather than relying on rough guesses.
Start on the Apple iPhone page, or use sell my mobile if you want to choose your device from the main quote flow. If you are comparing selling routes first, the phone value comparison page is the better starting point.
