How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-01 · 7 min read · Independent comparison
• Samsung Galaxy Buds 2 — biggest strength: Active Noise Cancellation plus an Ambient Sound mode, wrapped in a low-profile in-ear design Samsung says is 10% smaller and lighter than Galaxy Buds Plus.
• Samsung Galaxy Buds 2 — biggest trade-off: It's a sealed in-ear bud, so it physically blocks your ear canal, and its rated playtime of 7.5 hours is a fraction of the C40i's figure.
• Anker Soundcore C40i — biggest strength: Open-ear clip-on comfort with a flexible joint rated for 1,000 bends, 21 hours of playtime and Bluetooth 5.4.
• Anker Soundcore C40i — biggest trade-off: There's no noise control at all (the spec sheet lists "None"), and an open-ear design means you don't get the isolation a sealed bud provides.
• Who each pick is for: Galaxy Buds 2 suits someone who wants to block out a commute or an office; C40i suits someone who wants music while staying aware of traffic, coworkers or training partners.
The Galaxy Buds 2 is built around one idea: shut the world out and put you inside the music. Active Noise Cancellation handles the unwanted noise, and a Low latency Ambient Sound mode does the opposite when you want to hear what's happening around you. That back-and-forth between "block everything" and "let some in" is the core of the product, and it's a genuinely practical pairing.
Comfort is the second pillar. The in-ear shape is described as low profile and 10% smaller and lighter than Galaxy Buds Plus, and the whole earbud weighs just 5 g. You get silicone tips, a wireless charging case, and a choice of tip sizes — which matters, because Samsung itself notes that tips which don't match your ear canals will hurt both sound quality and call performance. Fit isn't a detail here; it's the difference between the product working and not working.
The third pillar is voice and translation. Three microphones with noise reduction aim to keep your voice crisp on calls. And if you own a Galaxy phone, the Interpreter and Live Translate features can pipe real-time translation through the buds during face-to-face conversations or phone calls.
Buy it if you want noise cancellation, a compact sealed fit, and you're already in the Samsung/Galaxy ecosystem where the translation features actually apply.
Skip it if you dislike things sitting inside your ear canal, you want to stay fully aware of your surroundings, or you need marathon battery life. At 7.5 hours rated, this is an everyday-session bud, not an all-day one. Also note there's no headphone jack, so it's Bluetooth-only — as you'd expect from a true wireless design.
The C40i takes the opposite approach entirely. These are open-ear, clip-on buds — the spec sheet lists the ear placement as "Open Ear" with an over-ear earpiece shape. Nothing goes into your ear canal. Instead, they clip on, and the design is explicitly about breathability and staying aware. If you've ever wanted to hear your music and your surroundings at the same time, this is the category that does it.
The fit engineering is where Anker put the most obvious effort. The flexible joints use 0.5 mm memory titanium wires and soft TPU, rated for 1,000 bends so they conform to your ear shape and hold there. There are also attachable ear grips specifically to keep them locked in during intense workouts. For anyone who has had buds work loose mid-run, that's the feature to care about.
Battery is the headline number: 21 hours of average life, matched by a 21-hour carrying case figure, with a 2-hour charge time. Pair that with Bluetooth 5.4 and a stated 15-metre range, and you get a bud you can wear through a long day or a long training block without babysitting a charger. Controls are physical buttons rather than touch — Anker's pitch is precise, accident-free control, which is a real advantage when your hands are sweaty or gloved.
Call clarity is handled by an AI algorithm and positioned microphones. One honest caveat from the data: the frequency range tops out at 20 Hz – 10,000 Hz, narrower than the Galaxy Buds 2's 20 Hz – 20,000 Hz, which is typical of open-ear designs that prioritise awareness over deep isolation. There's also no noise control whatsoever, and the IPX4 rating means splash resistance, not swimming.
Buy it if you want all-day battery, a clip-on fit that never enters your ear canal, and you need to hear traffic, colleagues or your surroundings while listening.
Skip it if you want active noise cancellation or maximum isolation. Open-ear is the whole point here — and the whole limitation.
• Best for noise cancellation → Samsung Galaxy Buds 2. It's the only one of the two with Active Noise Cancellation; the C40i lists noise control as "None."
• Best for battery life → Anker Soundcore C40i. 21 hours versus 7.5 hours is not a close contest.
• Best for staying aware of your surroundings → Anker Soundcore C40i. Open-ear by design, with no sealed canal.
• Best for a sealed, immersive listen → Samsung Galaxy Buds 2. In-ear silicone tips plus ANC get you closer to the music.
• Best for workouts and movement → Anker Soundcore C40i. Flexible titanium-wire joints, attachable ear grips, IPX4 and physical buttons are all built for active use.
• Best for calls and voice pickup → a split decision. Galaxy Buds 2 brings three microphones with noise reduction; C40i brings an AI call algorithm with positioned mics.
• Best for Samsung phone owners → Samsung Galaxy Buds 2. Interpreter and Live Translate depend on a Galaxy phone.
• Best for travel and commuting → Samsung Galaxy Buds 2. ANC plus a compact 5 g-per-bud, low-profile shape is the commuter formula.
If I had to pick one, I'd buy the Samsung Galaxy Buds 2 — but only if noise cancellation and a sealed in-ear fit are what I'm actually after. For commuting, open-plan offices, flights and focused listening, ANC plus Ambient Sound mode is the more useful pair of features, and the smaller, lighter in-ear design is easier to forget you're wearing.
That said, I'd genuinely recommend the Anker Soundcore C40i to a different buyer: the runner, cyclist, gym-goer or warehouse worker who needs to hear what's around them and can't be charging buds every evening. In my opinion, the C40i wins outright on battery and fit flexibility, while the Galaxy Buds 2 wins on isolation and smart features.
The deciding question is simple: do you want to block sound out, or let it in?
FAQ
how to ear buds work
how to open ear buds
If you mean open-ear buds, there's nothing to "open" — the C40i simply clips onto your ear using its flexible titanium-wire joint and soft TPU, and you can add the attachable ear grips for extra stability. If you mean the charging case, the Galaxy Buds 2 ships with a wireless charging case, so you place the buds in and charge it wirelessly or via the included cable.
The Samsung Galaxy Buds 2. It's the only one of the two with Active Noise Cancellation, and its in-ear silicone tips physically seal your ear canal, which adds passive blocking on top. The C40i lists noise control as "None" and is designed to let outside sound in, not keep it out.
The Anker Soundcore C40i, by a wide margin. It's rated at 21 hours of average battery life, with the carrying case also rated at 21 hours and a 2-hour charge time. The Galaxy Buds 2 is rated at 7.5 hours of average life. If you'd rather not think about charging, the C40i is the practical choice.
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