A 7,900mAh battery, 45W charging and enough spare capacity to run somebody else's phone off the bottom of this one. It streets a little under its launch price, which almost nothing does in 2026, and POCO will patch it into 2032. It also weighs 232 grams and spreads 720p across a 6.9-inch screen, and that is not a footnote - it is the bill. Buy it if the battery icon is the thing you check most. Look elsewhere if the screen is.
The POCO M8x can charge somebody else's phone faster than a good number of phones charge themselves.
That is not a figure of speech. Reverse wired charging here runs at 22.5W, which is meaningfully quicker than the 15W several current budget phones manage on their own charger, plugged into a wall. Hand a friend the cable at a wedding and you are the fastest socket in the room.
It can afford the generosity because of what is underneath: 7,900mAh, which is among the largest cells any mainstream brand is shipping in India right now. The rest of this review is about what POCO gave up to fit it, and whether the trade lands.
7,900mAh and 45W, which are not supposed to arrive together at this money.
The standard budget bargain is that a big battery buys you a slow charger. Capacity is cheap, charging circuitry is not, so the phone with the headline cell is usually the one you leave plugged in overnight because 15W and 7,000mAh means a refill measured in hours. That is the compromise this desk has named on phone after phone.
POCO did not take it. 45W wired against 7,900mAh is a genuine engineering choice rather than a spec-sheet flourish, and it is the single best thing about this phone. You get the endurance number and you get to recover from it in a lunch break.
The 22.5W reverse wired output is the part nobody markets properly. It turns the phone into a power bank that also makes calls - useful on a long train journey, on a site, or anywhere a second device dies before you do. A phone this size is already a brick in your pocket; it may as well do a brick's job.
What it costs is mass. 232 grams is heavy by any reading, and 8.8mm thick with it. Anyone who has carried a 200-gram phone knows the difference a little cell makes to a shirt pocket and a long phone call. If you want the endurance, you carry the endurance.
720p is not a problem until you stretch it across 6.9 inches.
Here is the compromise, and it is a real one. A 720 x 1600 panel does not become worse when a maker makes it bigger. It simply has to spread the same pixels over more glass, and 6.9 inches is a lot of glass. What comes out the other end is 254 pixels per inch.
So the size and the sharpness are working against each other on the same component. The largest screen POCO could fit is also the reason the screen looks softest - text edges, small UI type, subtitles, anything you read rather than glance at. Buyers shopping a spec list see "6.9-inch" and "120Hz" and read them as 2 wins. They are one win and one consequence.
The 120Hz is genuine, and so is Gorilla Glass 7i on a phone at this price. Scrolling will feel fluid. Reading will not feel crisp. Those are separate senses and this panel satisfies exactly one of them. If you want to understand why the panel technology matters as much as the numbers, our AMOLED against LCD guide covers the ground properly - and this is an LCD, so contrast and black levels are ordinary too.
Calls, navigation, UPI, WhatsApp, music, camera viewfinder, YouTube at 720p. A large, bright, fast-refreshing screen at 254ppi is perfectly pleasant for all of it. The complaint is specific: long-form reading and fine text. If that is not how you use a phone, the biggest criticism of this device does not apply to you.
50MP that works, and a second ring nobody is claiming credit for.
The main sensor is 50MP at f/1.8 with phase-detect autofocus, which at this money is the right specification to lead with. There is a second element in the island, described across spec sheets only as an auxiliary lens - no resolution, no function, no claim. A lens the maker will not name is not a lens you should count, and we are not going to count it for them.
Two omissions matter more than the lens arithmetic. There is no optical image stabilisation, which is the line this desk keeps drawing under Rs. 30,000 because it is what separates a usable handheld low-light frame from a smeared one. And video tops out at 1080p at 30fps. In 2026, at Rs. 20,000, that is genuinely behind - plenty of phones in this bracket shoot 4K, and a phone you keep for 6 years will spend those 6 years unable to record the resolution most screens already expect.
The front camera is 8MP. It is there. It is not the reason anybody buys this phone.
The commitment changed, and it changed by a lot.
For years the POCO M line shipped with two OS upgrades and 3 years of security patches, which is the budget-phone norm and quietly the most expensive corner a brand can cut. This phone carries four Android upgrades and 6 years of security updates. That is double the patch window its own predecessors got, on a phone that costs under Rs. 20,000, and it deserves saying plainly: that is a real improvement and POCO should get the point for it.
What makes it more than a marketing line here is the hardware it is attached to. Security patches running to 2032 are only worth having if the phone is still usable in 2032, and on most budget phones the first thing to give out is the battery - lithium cells fade with cycles, and a 5,000mAh phone 3 years in is a 4,000mAh phone. Start at 7,900mAh and the same decay leaves you with more capacity than most phones ship with new. The support promise and the cell are, unusually, matched to each other.
We have not held this phone and we are not going to tell you how HyperOS 3 feels. What we can tell you is what is in writing, and what is in writing is better than this segment normally offers.
It costs less than it launched at, which is rarer than it sounds.
The M8x arrived on 21 August 2026 and went on sale on the 27th, at a launch price of Rs. 20,999 for 4GB with 128GB and Rs. 22,999 for the 6GB version. Today the base model sits on open-market listings at about Rs. 19,500 to Rs. 20,000 - a little under where it started, roughly 5% below its launch price.
Set that against the year this desk has had. We have reported mid-rangers streeting 20 and 30% above their opening price, a maker raising its list twice in 12 months, and guide after guide abandoned because every candidate had climbed out of its own budget band. Against that backdrop, a phone that costs slightly less than it did on day one is not a boring fact. It is the whole reason the value case holds.
At Rs. 22,999, the 6GB version is a harder sell - the extra 2GB is the only difference, and the gap buys you into a bracket where the compromises start to sting. If you want this phone, the base configuration is the one that makes the argument. The same hardware also ships as the Redmi 17 5G, with more memory in each version, so compare the 2 badges before you choose.
- You want 2 days off a charge and a fast refill when it ends
- You keep phones for five or 6 years and want them patched throughout
- You charge other people's devices often, or carry a power bank you would rather not
- You want a microSD slot and a headphone jack, both of which survived here
- You read on your phone - books, long articles, documents, small text
- You shoot video, or shoot stills in low light without a stabilised lens
- 232 grams in a pocket is a dealbreaker
- You want an AMOLED panel, which this money can now buy elsewhere
Buy it for the battery, with the screen fully in view. The POCO M8x is a phone built around one number and honest about it: 7,900mAh, 45W to refill it, 22.5W to lend it out, four Android upgrades and 6 years of patches, a memory-card slot and a headphone jack, at about Rs. 19,500 to Rs. 20,000 - slightly below what it launched at, in a year when almost nothing has gone down. What you pay is 232 grams and a 720p panel stretched over 6.9 inches, plus no OIS and a 1080p video ceiling that will look worse every year you keep it. That makes it a narrow recommendation rather than a broad one. For the buyer whose phone is a tool - calls, maps, payments, music, a long day away from a socket - it is one of the most sensible things at this price. For the buyer who reads and watches on the screen, the thing you would look at most is the thing this phone compromised first. Judged on published specification rather than a hands-on test.
A tool, priced like one. Compare it with the POCO M8, the battery-first realme Narzo Power, or the rest of our battery picks between Rs. 15,000 and Rs. 20,000.
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