Xiaomi Redmi 15 4G
By Muhammad Tahir · Updated July 2026 · how we review
A 7000mAh budget giant whose security cover runs only to August 2029, so buy it for battery life rather than longevity.
Is the Redmi 15 4G still supported?
Official promiseSupported until August 2029 · Buy-by August 2027
✓ Yes — the Redmi 15 4G is supported until August 2029, roughly 2.9 more years.
Xiaomi promises 4 years of updates for this phone, so it's supported until August 2029 — buying it today still gets you about 2.9 years of safe use (verified July 2026).
Source: source · last verified 2026-07-20 · how we compute this · what happens when support ends
TrueCost
Street price ÷ months of safe use remaining. How we compute it.
47% cheaper than the under-$300 median ($6.50/mo, dying phones excluded)
Should you buy the Redmi 15 4G in 2026?
Pros
- 7000mAh battery is among the largest at this price
- 144Hz FHD+ LCD is sharp and smooth for the money
- Headphone jack, IR blaster and microSD all survive
- Security patches committed through 2029
Cons
- Only two Android upgrades, ending at Android 17
- Snapdragon 685 is 4G-only in a year when budget 5G is normal
- 224g and 8.6mm make it genuinely heavy in the hand
Full specifications
Display
| Screen | 6.9-inch IPS LCD, FHD+ (1080 x 2340), 144Hz |
|---|
Performance
| Chipset | Qualcomm Snapdragon 685 (6nm) |
|---|---|
| RAM | 4GB / 6GB / 8GB |
| Storage | 128GB / 256GB |
Cameras
| main | 50MP — f/1.8, PDAF |
|---|---|
| depth | 2MP — f/2.4 |
| front | 8MP — f/2.0 |
Battery & charging
| Battery | 7,000 mAh |
|---|---|
| Charging | 33W wired |
Build
| Dimensions | 171.1 × 82.1 × 8.6 mm |
|---|---|
| Weight | 224 g |
| Materials | Plastic frame and back; side-mounted fingerprint sensor, 3.5mm jack, IR blaster |
| Water resistance | IP64 |
Software & connectivity
| Software | Android 15 with HyperOS 2 at launch |
|---|---|
| Connectivity | 4G LTE, Wi-Fi 5, Bluetooth 5.1, NFC (region-dependent), USB-C, 3.5mm jack, IR blaster, microSD |
| Update policy | 2 OS upgrades · 4 years of security updates (official promise) |
Better-value alternatives
Similar price, lower cost per month of safe ownership.
Frequently asked questions
Is the Redmi 15 4G still supported?
Yes. It launched on 1 August 2025 with Android 15 and HyperOS 2, and Xiaomi's published policy covers security patches through August 2029. It sits comfortably inside its support window in 2026.
How long will the Redmi 15 4G get updates?
Xiaomi commits to two major Android upgrades, taking it as far as Android 17, plus four years of security patches that lapse around August 2029. That is about two years shorter than Samsung offers at a similar price.
Is the Redmi 15 4G worth buying in 2026?
It is if battery life dominates your shortlist, because 7000mAh with a 144Hz FHD+ panel is rare near $130. The catch is the 4G-only Snapdragon 685 and a support window that closes in August 2029, so treat it as a two-to-three year phone rather than a keeper.
Does the Redmi 15 4G support 5G?
No. The Snapdragon 685 is a 4G LTE chip, and the Redmi 15 5G is a separate model built on the Snapdragon 6s Gen 3. If your carrier is steering you toward 5G-only plans, buy the 5G version instead.
Compare it
Specs are collected from manufacturer documentation; prices reflect major US retailers and change often. Support end dates follow each brand's official policy (or, for Apple, its documented historical pattern). Last verified 2026-07-20.