Galaxy Quantum 5 review: The Korea-only A-series with a quantum-RNG security chip baked in.
A mid-ranger with a cryptography party trick.
Quantum 5 is essentially a rebadged Galaxy A-series for the Korean market, distinguished by the SK Telecom QRNG chip that hardens on-device key generation. Outside the security niche it is a competent Exynos 1480 mid-ranger; the quantum chip is the reason it exists and the reason it stays in Korea.
01Display
78/10078/100 trails the 80-point cohort average for mid-range phones of 2024.
02Camera
72/10072/100 — right at the average for mid-range phones of 2024.
03Performance
70/10070/100 — right at the average for mid-range phones of 2024.
04Battery
78/10078/100 trails the 84-point cohort average for mid-range phones of 2024.
05Build
72/10072/100 trails the 76-point cohort average for mid-range phones of 2024.
06Value
70/10070/100 is one of the weaker value results among mid-range phones of 2024 — 7 points under the average. Check the rows below before buying for this.
- Hardware QRNG chip for true-random key generation.
- Xclipse AMD GPU rare in this price class.
- IP67 + 5,000 mAh.
- One UI with 4 OS updates.
- Korea / SK Telecom exclusive.
- Heavy at 213 g.
- 25 W charging.
- QRNG benefit is niche for most users.
How this review is built: every section score, spec row and comparison on this page comes from SpecEagle's tracked catalogue — scores weight measured specs against the 171-phone cohort of mid-range devices released around the same time. We don't publish invented lab anecdotes. Spot an error? .