Samsung Galaxy A Series vs S Series: What the Extra Money Actually Buys
Both run the same software and both have a 120Hz AMOLED screen. Here is what genuinely separates the A series from the S series, using the specs of phones we stock.
Abdul Aziz
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4 min read
This is the most common question we get about Samsung, and most answers to it are useless because they list forty specifications without saying which ones you will ever notice.
So here is the short answer first. Buy an S series phone if you want to zoom, or if you want wireless charging. Everything else is a smaller difference than the price gap suggests.
The two phones we are comparing
To keep this concrete rather than vague, the table below uses the Galaxy A55 and the Galaxy S24, two phones from the same generation. Every figure comes from the specification tables on their own product pages.
| Galaxy A55 | Galaxy S24 | |
|---|---|---|
| Screen | 6.6 inch Super AMOLED, 120Hz | 6.2 inch Dynamic AMOLED 2X, 120Hz adaptive, 2600 nits peak |
| Main camera | 50MP, f/1.8, OIS | 50MP, f/1.8, OIS |
| Telephoto | None | 10MP, 3x optical zoom, OIS |
| Ultrawide | 12MP, f/2.2 | 12MP, f/2.2, 120 degrees |
| Processor | Exynos 1480 | Exynos 2400 |
| Wireless charging | No | 15W, plus reverse wireless |
| Water resistance | IP67 | IP68 |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6E |
| Fingerprint reader | Optical | Ultrasonic |
| microSD slot | Yes, dedicated | No |
| Battery | 5000mAh | 4000mAh |
Notice that the main camera is the same sensor at the same aperture with the same stabilisation. That surprises people. The difference is not the camera, it is the cameras.
The difference that actually matters: zoom
The A series does not have a telephoto lens. Not a weaker one, none at all. When you pinch to zoom on an A series phone, the software crops into the main sensor and sharpens the result. It looks acceptable on the phone screen and falls apart anywhere else.
The S24 has a dedicated 10MP telephoto at 3x optical zoom with its own stabilisation. That is a real lens capturing real light at that distance. The S24 Ultra goes further again with two telephoto lenses, 3x and 5x optical, on top of a 200MP main sensor.
If you photograph children, pets, sport, concerts, or anything you cannot walk closer to, this is the whole argument. If you photograph food, faces and holidays at normal distance, you will genuinely not miss it.
Both say 120Hz, and they are not the same 120Hz
The A55 runs at 120Hz. The S24 runs at 120Hz adaptive, which means it drops the refresh rate right down when the screen is static and only climbs when something moves. Same smoothness, less battery spent on it.
The S24 also reaches 2600 nits peak brightness. That number matters in exactly one situation: direct sunlight. If you use your phone outdoors a lot, it is a bigger practical difference than the resolution figures people usually compare.
The chip, and when you would notice
The Exynos 2400 in the S24 is substantially faster than the Exynos 1480 in the A55. Being honest about what that buys you: scrolling, messaging, camera app, banking app and social media feel the same on both.
You notice the flagship chip in demanding games, in heavy video editing, in how quickly the camera processes a burst of shots, and in how the phone feels in its third and fourth year rather than its first.
Four smaller differences that add up
- Wireless charging. The S24 has it, the A55 does not. If you own a charging pad or a car mount, this is a daily difference rather than a spec.
- IP68 rather than IP67. Both survive rain and a splash. IP68 is rated for deeper submersion for longer.
- Wi-Fi 6E rather than Wi-Fi 5. Only matters if your router supports it, and then it matters a lot in a crowded flat.
- Ultrasonic fingerprint reader. The S24 reads the ridges of your finger with sound. It is faster than the A55 optical reader and far better with wet or cold hands.
What the A series does better
This is not a one-way comparison.
- A bigger battery. 5000mAh against 4000mAh, in a phone with a less power-hungry chip.
- A memory card slot. The A55 takes a microSD card in its own dedicated slot. The S24 does not take one at all, so the storage you buy is the storage you keep.
- A bigger screen. 6.6 inches against 6.2. The S24 is deliberately compact.
The option most people miss: the FE
Samsung’s FE models sit between the two ranges and get overlooked. The Galaxy S23 FE has a 6.4 inch Dynamic AMOLED 2X at 120Hz adaptive, a 50MP main camera with stabilisation, a genuine 8MP telephoto at 3x optical zoom, IP68, wireless and reverse wireless charging, and an ultrasonic fingerprint reader.
In other words it keeps the telephoto lens and the wireless charging, which are the two things the A series is actually missing. Refurbished, it is frequently the sensible answer to this entire question.
So which should you buy?
- Buy A series if you want a big screen and a big battery, you shoot at normal distances, and you would rather put the money into a higher storage tier or a better condition grade.
- Buy S series if you zoom, you charge wirelessly, you use your phone outdoors in bright sun, or you intend to keep it four years or more.
- Buy an FE if you want the telephoto and the wireless charging without the full flagship outlay.
Whichever you choose, condition is a separate decision from model, and our guide to refurbished phone grades explains how to make it.
Browse all refurbished Samsung phones, or see the full range of refurbished smartphones.
