Phone comparison
How the Galaxy S23 Ultra and Galaxy S24 Plus compare on the specifications their makers publish, what each one costs refurbished, and what we pay for yours.
The Galaxy S23 Ultra is £15.99 less refurbished today.
Samsung · Released 2023
£434Refurbished fromFrom · 256GB · Pristine
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Samsung · Released 2024
£449.99Refurbished fromFrom · 256GB · Good
Spec by spec
They differ on 16 of 22 specifications.
| Specification | Galaxy S23 Ultrafrom £434 | Galaxy S24 Plusfrom £449.99 |
|---|---|---|
| Launch | ||
| Released | 2023 | 2024 |
| Display and chip | ||
| Screen size | 6.8in | 6.7in |
| Screen type | Dynamic AMOLED 2X | Dynamic AMOLED 2X |
| Resolution | 3088 x 1440 (Quad HD+) | 3120 x 1440 (Quad HD+) |
| Refresh rate | 120Hz | 120Hz |
| Chip | Snapdragon 8 Gen 2 Mobile Platform for Galaxy | Exynos 2400 |
| Memory | 8GB | 12GB(better) |
| Camera and battery | ||
| Rear camera | 200.0 MP + 10.0 MP + 12.0 MP + 10.0 MP | 50.0 MP + 10.0 MP + 12.0 MP |
| Main camera | 200MP | 50MP |
| Front camera | 12MP | 12MP |
| Battery | 5,000mAh(better) | 4,900mAh |
| Video playback | Up to 26 hours | Up to 31 hours(better) |
| Size and build | ||
| Height | 163.4mm | 158.5mm |
| Width | 78.1mm | 75.9mm |
| Depth | 8.9mm | 7.7mm |
| Weight | 233g | 196g |
| Water resistance | IP68 | IP68 |
| Build | Corning Gorilla Glass Victus 2 | Not published |
| Storage and software | ||
| Storage options | 256GB, 512GB, 1TB | 256GB, 512GB |
| Software at launch | Android 13 | Android 14 |
| Connectivity | 2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD, 5G Sub6 FDD, 5G Sub6 TDD | 2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD, 5G Sub6 FDD, 5G Sub6 TDD, 5G Sub6 SDL |
| Unlocking | In-display fingerprint | In-display fingerprint |
Every specification here is taken from the manufacturer’s own published figures and checked by a person before it appears. A tick marks the higher figure only where higher is simply better, such as battery life or memory. Not published means the maker does not publish that figure, not that the phone lacks it. Prices are the cheapest we have right now and change as stock moves, so take the price on the product page as the real one.
The verdict
Today (27 October) the Galaxy S24 Plus is £15.99 more than the Galaxy S23 Ultra refurbished. For that you get memory (12GB against 8GB) and video playback (up to 31 hours against up to 26 hours). The Galaxy S23 Ultra has battery (5,000mAh against 4,900mAh).
Trade in
Upgrading from an Galaxy S23 Ultra?
Trade-in figure for excellent condition. Yours is priced when you tell us its condition, and both figures move with stock.
Trade in your
Worth up to
£315
Trade in your
Worth up to
£300
From our own records
450 people sold us an Galaxy S23 Ultra. The average payout was £133 and the most was £325. 33% were 128GB phones.
439 people sold us an Galaxy S24 Plus. The average payout was £251 and the most was £480. 33% were 128GB phones.
Envirofone trade-ins and envirofone.com orders, 27 Oct 2025 to 27 Oct 2026. Payouts are averages across every condition, so your own quote depends on the state of your phone.
Questions
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