Xiaomi Redmi K90
By Muhammad Tahir · Updated July 2026 · how we review
The Redmi K90 undercuts its own Pro Max sibling with a plain Snapdragon 8 Elite and a huge 7,100mAh battery, at a price where Xiaomi's estimated 6-year security window still pencils out well under $75 a year.
Is the Redmi K90 still supported?
Our estimateSupported until October 2031 · Buy-by October 2029
✓ Yes — the Redmi K90 is expected to be supported until October 2031, roughly 5.1 more years.
Apple doesn't publish an end date, but iPhones have a consistent ~6-year update track record — on that basis the Redmi K90 should be supported until around October 2031. Buying it today still gets you about 5.1 years of safe use, and Apple's written legal minimum is 5 years (verified July 2026).
Source: Xiaomi's official policy · last verified 2026-07-03 · how we compute this · what happens when support ends
TrueCost
Street price ÷ months of safe use remaining. How we compute it.
45% cheaper than the $300–600 median ($9.84/mo, dying phones excluded)
Should you buy the Redmi K90 in 2026?
Pros
- Huge 7,100mAh battery with 100W wired charging
- 50MP telephoto plus 50MP main camera for the price tier
- Snapdragon 8 Elite flagship-class performance well below flagship pricing
- IP68 dust/water resistance and Bose-tuned stereo speakers
Cons
- China-only -- no global or US release, so it must be imported
- Only an 8MP ultra-wide camera, weaker than the Pro Max's 50MP unit
- No official written update promise; support years are estimated, not guaranteed
Full specifications
Display
| Screen | 6.59-inch AMOLED, 1156x2510, 120Hz, 3500 nits peak |
|---|
Performance
| Chipset | Qualcomm Snapdragon 8 Elite |
|---|---|
| RAM | 12GB / 16GB |
| Storage | 256GB / 512GB / 1TB |
Cameras
| main | 50MP — Omnivision OV50 Light Hunter 800 |
|---|---|
| ultra-wide | 8MP |
| telephoto | 50MP |
| front | 20MP |
Battery & charging
| Battery | 7,100 mAh |
|---|---|
| Charging | 100W wired |
Build
| Dimensions | 157.5 x 75.3 x 8.0 mm |
|---|---|
| Weight | 206 g |
| Materials | glass front, glass back, aluminum frame |
| Water resistance | IP68 |
Software & connectivity
| Software | Android 16 with HyperOS 3 at launch |
|---|---|
| Connectivity | 5G, Wi-Fi 6, Bluetooth 5.4, USB-C, NFC, IR blaster |
| Update policy | ~4 years of updates (our estimate from Xiaomi's track record — written minimum is 5 years) |
Better-value alternatives
Similar price, lower cost per month of safe ownership.
Frequently asked questions
How long will the Redmi K90 get updates?
There's no official Xiaomi document for this China-only model, so PhoneLifespan estimates 4 years of OS upgrades and 6 years of security patches based on Redmi's recent track record, putting realistic end-of-support around October 2031.
What's the difference between the Redmi K90 and K90 Pro Max?
The K90 uses the older Snapdragon 8 Elite (not Gen 5), an 8MP ultra-wide instead of 50MP, and a smaller 7,100mAh battery versus the Pro Max's 7,560mAh -- at a notably lower CNY 2,599 starting price.
Can I buy the Redmi K90 outside China?
Not officially. It launched exclusively in China on October 23, 2025, so buyers elsewhere need to import a unit, sideload Google apps, and go without a local warranty or carrier certification.
Is the Redmi K90 worth it for its battery life?
Yes, if battery longevity matters most: the 7,100mAh cell is among the largest in its class, though camera versatility and update certainty both take a step down from the Pro Max.
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 2026-07-03.