Speaker, Mic, and Call Quality Compared: iPhone 15 vs. Galaxy S24 vs. Pixel 8
Camera comparisons get all the attention, but speaker quality, microphone performance, and call clarity affect a phone owner every single day in ways screenshots can't capture — a tinny speaker on a video call, a muffled voice on a windy street, or a Bluetooth headphone pairing that drops audio quality without warning. The iPhone 15, Galaxy S24, and Pixel 8 take three distinct approaches to audio hardware and software processing, and the differences are large enough to matter for anyone who spends real time on calls, video chats, or listening to podcasts and music through the built-in speakers. This guide breaks down speaker and call quality across all three flagships using their actual hardware specifications and known audio architecture.
Stereo Speaker Hardware: Not All "Stereo" Is Equal
All three phones market dual "stereo" speakers, but the physical implementation differs meaningfully. The iPhone 15 pairs a dedicated bottom-firing speaker with the earpiece acting as a second channel, a design Apple has refined across many generations to produce a surprisingly wide, room-filling stereo image for a phone this size, with strong bass extension relative to its speaker volume. The Galaxy S24 uses a similar earpiece-plus-bottom-firing arrangement tuned in partnership with AKG, Samsung's in-house audio brand, which tends to favor a brighter, more treble-forward signature that can sound louder at max volume but slightly thinner on bass-heavy content. The Pixel 8's speaker setup is the most conservative of the three in raw output volume, prioritizing clarity and vocal presence — a deliberate choice given how much of the phone's audio use case, in Google's own design philosophy, centers on Assistant responses and spoken content rather than music playback.
Spatial Audio and Virtual Surround Processing
Apple's Spatial Audio, when paired with supported content and AirPods, applies dynamic head-tracking to simulate a multi-speaker surround field, and the iPhone 15's built-in speakers also benefit from a lighter version of this same spatial processing for stereo content played directly through the phone. Samsung includes Dolby Atmos processing on the Galaxy S24 that can be applied to built-in speaker playback as well as headphone output, which widens the perceived soundstage on supported content, though the effect is more noticeable through headphones than through the phone's own compact speakers. The Pixel 8 does not include an equivalent proprietary spatial audio branding, relying instead on standard stereo separation, which is a genuine feature gap for anyone who specifically wants a more immersive built-in speaker experience without external hardware.
Call Quality: VoLTE, HD Voice, and Noise Suppression
Voice call clarity depends on a combination of carrier network support (VoLTE and HD Voice codecs) and on-device noise suppression, and all three phones support modern HD Voice calling on compatible carriers and networks. Where they diverge is in software-side noise cancellation during calls: the Pixel 8 leverages Google Tensor G3's dedicated machine learning capabilities for call audio processing, including background noise suppression that's genuinely effective at isolating a voice from wind, traffic, or crowd noise without the artificial, processed sound that cruder noise-suppression algorithms produce. The Galaxy S24 includes similar AI-based call enhancement tools that can be toggled during an active call, giving users direct control over how aggressively background noise gets suppressed. The iPhone 15 handles this more invisibly, applying consistent voice isolation automatically through iOS's built-in call processing without exposing as many user-facing toggles, which suits users who want it to just work but offers less manual control for people who want to fine-tune the effect.
Bluetooth Audio Codecs: A Real Ecosystem Difference
This is one of the more consequential and least understood differences between iOS and Android for anyone who uses wireless headphones. Apple supports AAC over Bluetooth audio codecs as its primary high-quality option on iPhone, which works well with AirPods and most modern Bluetooth headphones, but the iPhone 15 does not support the higher-bitrate aptX or LDAC codecs that many premium Android-focused headphones and earbuds use for their best audio quality. The Galaxy S24 and Pixel 8 both support a broader range of Bluetooth codecs including AAC and, on many headphone pairings, aptX or aptX HD, giving Android users access to higher-bitrate wireless audio streaming when paired with codec-matching headphones — though the real-world audible difference depends heavily on the specific headphones and listening conditions. Anyone who already owns aptX or LDAC-certified headphones should weigh this codec gap seriously, since it's a case where the phone's ecosystem, not just its own speaker hardware, materially affects audio quality.
Microphone Arrays for Video and Voice Recording
Beyond calls, all three phones use multi-microphone arrays for video recording, voice memos, and voice-to-text input, using beamforming techniques to isolate the primary speaker's voice from ambient noise. The iPhone 15's microphone array is tuned specifically to complement its video recording capabilities, including wind noise reduction that's noticeably effective during outdoor video capture — a detail that matters for anyone using the phone for casual vlogging or voice memos outdoors. The Galaxy S24 and Pixel 8 both offer comparable multi-mic setups, with the Pixel 8 benefiting from Tensor G3's on-device audio processing for features like Recorder's real-time transcription, which requires clean microphone input to work accurately across background noise conditions.
Gaming Audio: Where Speaker Placement Matters Most
Speaker placement becomes especially noticeable during landscape-orientation gaming, where a poorly positioned speaker can get muffled by a hand gripping the phone. Our gaming performance comparison of these same three phones covers frame rate and thermal behavior in depth, but it's worth noting here that the iPhone 15's speaker placement, split between the bottom edge and earpiece, holds up better during landscape gaming than either Android phone's more bottom-heavy arrangement, since one channel remains largely unobstructed by typical hand positioning.
Frequently Asked Questions
Which of these three phones has the loudest speakers? The Galaxy S24 typically measures the loudest at maximum volume among the three, though loudness alone doesn't equate to the best overall sound quality.
Does the iPhone 15 support high-resolution Bluetooth audio codecs like LDAC? No — Apple's iPhone lineup, including the iPhone 15, is limited to AAC and SBC over Bluetooth, which is a real limitation for owners of aptX or LDAC-certified headphones.
Which phone has the best call quality in noisy environments? The Pixel 8's Tensor-powered noise suppression is widely regarded as the most effective of the three at isolating voice from background noise during calls, thanks to dedicated on-device machine learning processing.
The Bottom Line
Audio quality across the iPhone 15, Galaxy S24, and Pixel 8 isn't a simple better-or-worse comparison — it depends on what actually matters to the individual buyer. Music and media playback through built-in speakers favors the iPhone 15's tuned stereo image and Spatial Audio support, wireless headphone owners with aptX or LDAC gear should strongly consider the codec advantage Android offers, and anyone who spends significant time on calls in noisy environments will likely appreciate the Pixel 8's aggressive on-device noise suppression the most. None of these are dealbreaker differences on their own, but for buyers who genuinely care about how their phone sounds and how clearly it transmits their voice, they're worth weighing alongside the more commonly compared camera and performance specs.