| Samsung Galaxy Buds4 Pro (SM-R640)
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Security Grade
Calculator v
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Samsung Galaxy Buds4 Pro
Release Date: 2026-02-26 • Status: In sale
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Security Evaluation
1. Device Security
| Criterion
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Value
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Proof
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Comment
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| Known hardware tampering
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None
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🔗 Proof
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No user-accessible storage or sensitive credentials; sealed earbud design with no exposed debug ports.
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| Known vulnerabilities
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Rare
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🔗 Proof
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Bluetooth audio devices occasionally have pairing vulnerabilities (e.g., BlueBorne-style), but TWS earbuds have minimal attack surface.
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| Prior attacks
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Rare
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🔗 Proof
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Limited documented attacks on consumer earbuds; Bluetooth impersonation/relay attacks theoretically possible but rare in practice.
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| Updatability
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Very common
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🔗 Proof
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Firmware updates delivered via Galaxy Wearable app; Buds4 Pro receives ongoing firmware patches since launch.
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| Category Score
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Score: 2 / 3
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2. System Security
| Criterion
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Value
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Proof
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Comment
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| Authentication with other systems
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Full
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🔗 Proof
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No standalone authentication; pairing initiated by host phone/tablet. No account system on earbuds themselves.
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| Communications
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Encrypted with up-to-date encryption
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🔗 Proof
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Bluetooth 5.4 / LE Audio with AES-CCM encrypted link; Secure Connections pairing (LESC) used with modern hosts.
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| Storage
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No encryption
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🔗 Proof
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Minimal onboard storage (only settings, no user data); no encryption mechanism needed at this scale.
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| Category Score
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Score: 2 / 3
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3. User Authentication
| Criterion
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Value
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Proof
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Comment
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| Account management
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Absent
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🔗 Proof
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No account management on earbuds; all account logic resides on paired device.
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| Authentication
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Absent
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🔗 Proof
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Pairing authentication handled by host OS; earbuds accept pairing from trusted hosts.
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| Brute-force protection
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Absent
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—
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No brute-force protection mechanism on earbuds themselves.
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| Event logging
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Absent
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—
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No logging capability on earbuds.
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| Passwords
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Default/Common/Easy to guess
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🔗 Proof
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Uses standard Bluetooth pairing (passkey confirmation on host); no user-set password on earbuds. Default Bluetooth model is inherently low-security.
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| Category Score
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Score: 3 / 3
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Technical Specifications
| Property
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Details
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| Operating System & App
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Proprietary firmware (Companion App: Galaxy Wearable)
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| Hardware (CPU / GPU)
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CPU: Proprietary Bluetooth SoC • GPU: None
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| Memory & Storage
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Memory: N/A • Storage: N/A
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| Power, Battery & Charging
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Battery: 61 mAh / earbud; 530 mAh (case) • Power: 2.5 – 4.5 W • Charging: USB-C wired, Qi wireless
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| Display & Camera
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Display: None(LED indicator) • Camera: None
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| Sound & Connectivity
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Sound: 2-way speaker, 6 mics with ANC, AKG tuning • Connectivity: Bluetooth 5.4 / LE Audio
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| Physical (Dimensions & Mass)
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Dimensions: Earbud: 30.9 × 18.1 × 19.6 mm; Case: 51 × 28.3 × 51 mm • Mass: 5.1 g / earbud; Case: 44.3 g
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Samsung Galaxy Buds4 Pro are 2026 premium true wireless earbuds (61 mAh per earbud, 530 mAh case) with ANC and AKG-tuned 2-way speakers. The earbuds themselves have no standalone authentication, no local account system, and minimal onboard storage (configuration only). All pairing and authentication logic resides on the host phone/tablet via the Galaxy Wearable companion app. Communications use Bluetooth 5.4 / LE Audio with AES-CCM encrypted links via Secure Connections pairing. There is no storage encryption mechanism because no user data is stored on the earbuds. Firmware updates are delivered over-the-air via Galaxy Wearable. Attack surface is extremely limited; Bluetooth relay/spoofing attacks are theoretically possible but rare in practice.
