Vivo TWS 4

Vivo TWS 4
Security Grade A- Calculator v1	Vivo TWS 4 Brand: Vivo (Parent: BBK Electronics) Category: Earphone‎ • Model / Gen: Release Date: 2024-03-26 • Status: Classification Date: 2025-10-09 • Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	None	🔗 Proof
Known vulnerabilities	None	🔗 Proof
Prior attacks	None	🔗 Proof
Updatability	Very common	🔗 Proof
Category Score	Score: 1 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	🔗 Proof
Communications	Encrypted with up-to-date encryption	🔗 Proof
Storage	Encrypted with up-to-date encryption	🔗 Proof
Category Score	Score: 2 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Basic	🔗 Proof
Authentication	Basic	🔗 Proof
Brute-force protection	Exist	🔗 Proof
Event logging	Access event logged	🔗 Proof
Passwords	Require change after setup with complexity requirements	🔗 Proof
Category Score	Score: 2 / 3

Technical Specifications

Property	Details
Operating System & App	(Companion App: )
Hardware (CPU / GPU)	CPU: • GPU:
Memory & Storage	Memory: • Storage:
Power, Battery & Charging	Battery: Earbuds ~45–50 mAh each; Case ~420–480 mAh (typical) • Power: Up to 6–10 hours per charge (ANC off/on); up to 40–45 hours with case • Charging: USB‑C wired; ~1 h earbuds, ~2 h case; 10 min charge ≈ 2 h playback (typical)
Display & Camera	Display: • Camera:
Sound & Connectivity	Sound: Adaptive ANC (up to ~55 dB), transparency mode, 3‑mic call noise reduction, Hi‑Res Audio Wireless, 24‑bit/96 kHz support, DeepX 3.0 sound presets • Connectivity: Bluetooth 5.4; codecs: SBC/AAC/LC3/LHDC; multipoint, Google Fast Pair/vivo FlashConnect, low‑latency gaming mode (~44–55 ms)
Physical (Dimensions & Mass)	Dimensions: • Mass: