SpecEagle
SpecEagle review · Samsung

Galaxy Quantum 4 review: The Galaxy A with a quantum-cryptography security chip.

SpecEagle Editorial·Apr 2023·$500
Overall
74/100
Class rank
#4 of 4
Tier
Mid-range
Buy?
At the right price
The verdict, up front

A phone with a quantum chip.

Galaxy Quantum 4 — a Korea-exclusive Galaxy A variant for SK Telecom — embeds a QRNG quantum random-number generator chip for genuinely unpredictable cryptographic keys. A niche security flex on otherwise solid A-series mid-range hardware.

01Display

82/100

82/100 — right at the average for mid-range phones of 2023.

TypeSuper AMOLED, 120Hz
Size6.6 inches
Resolution1080 x 2400 px

02Camera

72/100

72/100 trails the 76-point cohort average for mid-range phones of 2023.

Main50 MP, f/1.8, OIS
Ultrawide12 MP, 123 deg
Macro5 MP
Selfie32 MP

03Performance

70/100

70/100 — right at the average for mid-range phones of 2023.

ChipsetExynos 1380 (5nm)
GPUMali-G68 MP5
SecuritySK Telecom QRNG quantum random-number chip

04Battery

80/100

80/100 trails the 83-point cohort average for mid-range phones of 2023.

Capacity5000 mAh
Charging25W

05Build

74/100

74/100 is one of the weaker build results among mid-range phones of 2023 — 6 points under the average. Check the rows below before buying for this.

What works
  • Hardware quantum random-number generator for security
  • 120Hz AMOLED + OIS + IP67
  • Stereo + microSD + 3.5 mm jack
What doesn't
  • Exynos 1380 mid-tier
  • Korea-exclusive (SK Telecom)
  • Heavy 213 g

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 4-phone cohort of mid-range devices released around the same time. We don't publish invented lab anecdotes. Spot an error? .