Redmi 15C 4G vs Redmi A4 5G
Winner
Xiaomi Redmi 15C 4G
Lifespan decides this one: the Redmi 15C 4G is supported until Aug 2031 at $1.91 per month of safe use, while the Redmi A4 5G runs out in Nov 2028 ($3.57/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.
Value Score: Redmi 15C 4G 82 · Redmi A4 5G 70 — methodology
Who should pick which
Beyond the scores — our take on each phone and the buyer it actually suits.
An ultra-affordable big-screen phone whose standout feature is Xiaomi's new long-support policy, giving even this entry model years of patches most cheap phones never see.
Pick it if
- ✓ The tightest budgets that still want years of security updates
- ✓ First phones, kids or backup devices needing a big battery and screen
- ✓ Buyers in regions where 4G is still the norm
Skip it if
- ✗ You want a sharp high-resolution display or 5G
- ✗ You need fast performance for demanding apps or games
One of the cheapest 5G phones around, and the debut device for the Snapdragon 4s Gen 2, with estimated support to 2028.
Pick it if
- ✓ Cheapest 5G seekers
- ✓ First smartphone
Skip it if
- ✗ You want a sharp screen
- ✗ Power users
The lifespan decider
When specs are close, support length decides it — this is what each phone costs per month of safe use.
Category by category
Both displays are effectively the same class.
The Redmi A4 5G's Qualcomm Snapdragon 4s Gen 2 (4nm) is simply the faster chip.
Camera systems are comparable on paper — pick by sample photos.
6,000mAh vs 5,160mAh — the Redmi 15C 4G lasts longer between charges.
The Redmi 15C 4G is supported until Aug 2031 — 32 months longer than the Redmi A4 5G.
Overall value goes to the Redmi 15C 4G at $1.91 per month of safe use.
Frequently asked
When will the Redmi 15C 4G stop getting security updates?
Under Xiaomi's expanded budget policy the Redmi 15C is set to receive four Android-based upgrades and around six years of security maintenance, so from its August 2025 launch it should be patched into 2031. It is already confirmed eligible for HyperOS 3 with Android 16 and future HyperOS 4. For a phone that often sells for barely over $100, that is an exceptionally long safe-to-use window.
Is the Redmi 15C 4G worth buying in 2026?
It is a sensible pick for anyone who needs the cheapest possible phone that will still be secure for years. The roughly $129 price across six supported years works out to under $2 a month, and the big battery, large screen and expandable storage cover the basics. The compromises are real, an HD+ LCD, 4G only and a slow chip, so it suits light users rather than anyone wanting speed or a sharp display.
What makes the Redmi A4 5G notable?
It was the first smartphone to ship with Qualcomm's Snapdragon 4s Gen 2 and is one of the most affordable 5G phones on the market.
Does the Redmi A4 5G have NFC?
Yes, the Redmi A4 5G includes NFC for contactless payments.
Full spec table
| Spec | Redmi 15C 4G | Redmi A4 5G |
|---|---|---|
| Price (street) | $115 | $100 |
| Display | 6.9-inch IPS LCD, HD+ (720 x 1600), 120Hz, Gorilla Glass 3 | 6.88-inch IPS LCD, HD+, 120Hz |
| Chipset | MediaTek Helio G81 Ultra (12nm) | Qualcomm Snapdragon 4s Gen 2 (4nm) |
| RAM | 4GB/6GB/8GB | 4GB |
| Storage | 128GB/256GB | 64GB/128GB |
| Battery | 6,000 mAh | 5,160 mAh |
| Charging | 33W wired | 18W wired (33W charger in box) |
| Rear cameras | 50MP main (f/1.8, PDAF) | 50MP main |
| Dimensions | 171.6 x 79.5 x 8 mm | 171.88 × 77.8 × 8.22 mm |
| Weight | 205 g | 212 g |
| Water resistance | IP64 | IP52 |
| Supported until | Aug 2031 | Nov 2028 |
More comparisons
Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.