Head to head
Nothing Phone (4a)vsXiaomi REDMI Note 15 Pro 5G
The short answer
Choose the REDMI Note 15 Pro 5G for more base storage, battery capacity and battery life per charge. Choose the Nothing Phone (4a) for peak brightness and battery lifespan. The REDMI Note 15 Pro 5G is £30 cheaper at UK RRP (£349 against £379). The Nothing Phone (4a) gets security updates for longer: until March 2032, against January 2032 for the REDMI Note 15 Pro 5G.
- Released
- 2026-03-05GSMArena — Nothing Phone (4a) specifications, retrieved 2026-08-21
- Price
- £379Nothing UK store — Phone (4a), retrieved 2026-08-21
- Security updates until
- 2032-03-05Nothing UK — Phone (4a), retrieved 2026-08-21
- Released
- 2026-01-06GSMArena — Xiaomi Redmi Note 15 Pro specifications, retrieved 2026-08-20
- Price
- £349Xiaomi UK store — REDMI Note 15 Pro 5G (list / original price, 8 GB + 256 GB), retrieved 2026-09-12
- Security updates until
- 2032-01-06Xiaomi UK — REDMI Note 15 Pro 5G, retrieved 2026-08-20
2 wins for Nothing Phone (4a)3 wins for REDMI Note 15 Pro 5G3 differences you won’t notice£30 apart at RRP
Verdict: REDMI Note 15 Pro 5G ahead on 3 rows, Nothing Phone (4a) on 2 rows
On the makers’ published figures, the Phone (4a) wins on peak brightness (4,500 nits against 3,200 nits) and battery lifespan (1,400 cycles against 1,000 cycles); the REDMI Note 15 Pro 5G wins on storage (base) (256 GB against 128 GB), battery capacity (6,580 mAh against 5,080 mAh) and battery per charge (60.83 h against 51.45 h). The differences in weight, display size and fast charging are below the thresholds you would notice. Both state the same refresh rate and RAM. The other 33 rows have no threshold or no direction to judge by, so nobody wins them.
True to scale
Outlines from each maker’s published dimensions, drawn to scale. Corner rounding is our drawing convention, not a measurement.
Specifications
A win is marked only where the figures can be ranked and the gap is one you could notice. A row the site has no threshold for says whether the two differ, and that it is not ranking them. = marks the same figure on both, ≠ not ranked a difference with no ranking. Every figure carries its source.
Body
Display
Platform
Xiaomi UK — REDMI Note 15 Pro 5G specs claims Xiaomi HyperOS 2 · GSMArena — Xiaomi Redmi Note 15 Pro specifications reports Android 15, HyperOS 2
Xiaomi UK — REDMI Note 15 Pro 5G specs claims Octa-core, up to 2.6GHz · GSMArena — Xiaomi Redmi Note 15 Pro specifications reports Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Memory
Camera
Battery
EU energy label (via GSMArena) claims 1000 cycles · Xiaomi UK — REDMI Note 15 Pro 5G claims 1600 cycles
Phone (4a) is ahead here, by a gap you’d notice.
8 attributes neither phone has a sourced figure for
HDR peak brightness · OS versions supported · Google Mobile Services · Wireless charging · Geekbench 6 (CPU, multi-core) · AnTuTu benchmark · 3DMark Wild Life Extreme · DXOMARK camera score. Rows appear as sources are cited — a gap in our data, not a statement about either phone.
Questions
Is the Nothing Phone (4a) better than the REDMI Note 15 Pro 5G?
On the figures, neither is better overall: the Nothing Phone (4a) wins on peak brightness, 4,500 nits (Nothing UK) against 3,200 nits (Xiaomi UK) and battery lifespan, 1,400 cycles against 1,000 cycles (both EU energy label); the REDMI Note 15 Pro 5G wins on storage (base), 256 GB (Xiaomi UK) against 128 GB (Nothing UK), battery capacity, 6,580 mAh (Xiaomi UK) against 5,080 mAh (Nothing UK) and battery per charge, 60.83 h against 51.45 h (both EU energy label). Every other row is borderline, too close to notice, or not ranked.
Which has the better battery?
The REDMI Note 15 Pro 5G, by a gap you’d notice: battery per charge, 60.83 h against 51.45 h (both EU energy label). The REDMI Note 15 Pro 5G, by a gap you’d notice: battery capacity, 6,580 mAh (Xiaomi UK) against 5,080 mAh (Nothing UK).
Which is lighter?
The Nothing Phone (4a) is lighter on paper, but not by a gap you’d notice: weight, 205 g (Nothing UK) against 210 g (Xiaomi UK).
Which has the brighter screen?
The Nothing Phone (4a), by a gap you’d notice: peak brightness, 4,500 nits (Nothing UK) against 3,200 nits (Xiaomi UK).
Which gets updates for longer?
The Nothing Phone (4a) gets security updates for longer: until March 2032, against January 2032 for the REDMI Note 15 Pro 5G. Sources: dates from Nothing UK and Xiaomi UK.
Which is cheaper?
The REDMI Note 15 Pro 5G is £30 cheaper at UK RRP (£349 against £379). Prices from Nothing Phone (4a): Nothing UK store; REDMI Note 15 Pro 5G: Xiaomi UK store.
Other comparisons
The pairs a buyer of either phone would also weigh. Any two phones in the catalogue can be compared from the chooser.