POCO is taking its X8s beyond Vietnam, and the international announcement makes an unusual pitch: a phone with a 6.35-inch screen, a 6,330mAh battery and support for 100W wired charging. The appeal isn’t simply squeezing big numbers into a smaller device. It’s offering something easier to grip than POCO’s usual large-screen phones without immediately surrendering battery capacity or a dedicated zoom camera.
POCO’s global launch post appeared on October 25, with international launch coverage following on October 26. The company is promoting early-bird prices of $399 for 8GB of RAM and 256GB of storage and $499 for 12GB and 512GB. Those dollar figures are not a confirmed U.S. retail launch, nor do they establish when a buyer in a particular country can receive the phone. The official global product page establishes the hardware; the local checkout page still matters for the actual purchase.
What has launched, and where can you actually buy it?
The X8s was not a surprise arrival everywhere on October 26. A Vietnam preorder listing was reported on October 21, and a subsequent Vietnam launch announcement dated October 25 described local online sales beginning that day. Its promotional prices were 10,990,000 Vietnamese dong for 8GB/256GB and 13,490,000 dong for 12GB/512GB, with the advertised local campaign running through November 18. These are Vietnamese offers, not exchange-rate versions of a worldwide price.
Even within Vietnam, an advertised sale date and a delivery date are different things. Earlier Shopee preorders carried estimated November 6–9 deliveries, according to the October 20 listing report. That does not mean every later order has the same shipping estimate. Likewise, POCO’s global marketing broadens the announcement but does not supply one worldwide shipping calendar or a universal end date for the $399 promotion. A retailer showing an actual local price, stock status and dispatch date is better evidence of availability than the existence of a global specifications page.
The two announced memory configurations come in Black, Blue and White. The $100 difference doubles storage and adds 4GB of RAM; it does not buy a larger screen, a different camera system or a higher charging rating. For someone who stores a lot of offline video or keeps a phone for several years, 512GB may be useful. For ordinary app use, the 256GB starting tier is the more compelling part of the announcement, provided the local promotional price holds.
How compact is a 6.35-inch phone?
Screen diagonals can disguise the thing your hand actually has to wrap around. The X8s measures 151.1mm tall, 71.8mm wide and 8.06mm thick, and weighs 187g, or about 6.6 ounces, according to POCO’s specifications. Its width is roughly 2.83 inches. That is the dimension that matters most when reaching a thumb across the keyboard or holding the phone while standing on a train. The 151.1mm height still means reaching the upper corners is a separate question.
For context, the larger POCO X8 measures 163.45 by 78.27mm and weighs 223g. The X8s is therefore 6.47mm narrower, 12.35mm shorter and 36g lighter. Those differences are meaningful when moving from a broad 6.83-inch phone to a 6.35-inch model. They do not make the X8s a tiny device, and the claimed thickness excludes the protruding camera lenses.
There’s a corresponding trade-off in battery size. The bigger X8 has an 8,340mAh typical-capacity battery, versus 6,330mAh in the X8s. A narrower chassis doesn’t magically keep the battery of the larger model. What makes the X8s interesting is that 6,330mAh is still substantial for its dimensions, alongside a physical telephoto camera that many buyers may value more than an even bigger display.
The 6,330mAh battery is promising, not a battery-life test
POCO says the X8s uses a silicon-carbon battery with 16% silicon content to help fit more capacity into the available space. Its published figure is 6,330mAh typical capacity, not a measured number of hours away from an outlet. Cell capacity describes stored charge, while real endurance depends on screen brightness, signal strength, navigation, gaming, background activity and other demands.
There are manufacturer endurance claims, but they need context. POCO advertises more than 24 hours of video playback and says the battery should retain at least 80% of its initial capacity after 1,600 charging cycles. Both come from POCO’s own laboratory information, not independent testing of mixed everyday use or years of ownership. Neither figure establishes how long the phone will last when taking photos, using 5G as a hotspot or running navigation at high brightness.
A smaller screen can reduce the area the display has to illuminate, and the X8s uses adaptive refresh-rate technology. But those characteristics cannot be turned into a credible two-day endurance promise without a controlled test. If the reason to buy is avoiding a midday charge, wait for repeatable battery comparisons rather than treating 6,330 as a runtime prediction.
What 100W PPS charging really promises
Here POCO is unusually specific about compatibility: its product footnotes say the X8s supports charging at up to 100W with PPS-compatible adapters. PPS, or Programmable Power Supply, is part of USB Power Delivery and lets compatible devices negotiate adjustable charging power. That makes a suitably specified USB-C charger relevant, but a charger with “100W” printed on it is not automatically a match for the phone’s fastest mode.
POCO also clarifies that its 100W HyperCharge figure refers to the power adapter’s output rating, while actual power can vary with conditions. It does not mean 100W flows into the battery continuously, and the specification does not establish a verified empty-to-full charging time. The phone may change its intake as the battery warms or approaches full. The practical issue is whether the charger and cable support the required power negotiation, not whose box displays the larger wattage number. Our USB PD and PPS charger guide explains how to read those adapter ratings.
There is also a package-content wrinkle. POCO’s global specifications include an adapter, USB-C cable and protective case in the list, yet explicitly warn that contents differ by region and ask buyers to confirm local adapter inclusion. Do not budget around a free 100W charger until the seller identifies what’s actually in that box. The phone also supports up to 22.5W wired reverse charging to compatible devices, useful for an emergency top-up of another gadget, but compatibility and power delivery are conditional. Wireless charging is not advertised in the published specifications.
A real telephoto camera, and a bright-screen claim with limits
The rear camera arrangement is more useful than a simple megapixel total suggests. POCO lists a 50MP main camera with a 1/1.55-inch Light Fusion 800 sensor, an f/1.77 lens and optical image stabilization. Alongside it is a separate 50MP telephoto camera with a 57mm-equivalent focal length, advertised as 2.5x optical zoom, plus an 8MP ultrawide. A 20MP camera sits on the front. The global camera specifications also list 4K rear video at 30 frames per second.
That dedicated telephoto matters for framing a portrait or a detail across a room: it offers a different optical view, rather than just digitally enlarging a crop from the main camera. It does not establish how much fine detail survives in poor light, or whether the telephoto matches the stabilized main camera for moving subjects. POCO specifically lists OIS for the main camera; it does not make the same hardware promise for the telephoto. The difference between sensor resolution, optical stabilization and zoom is worth remembering when judging actual samples.
The screen is a 6.35-inch AMOLED panel with 2656-by-1220 resolution and a 1–120Hz LTPO adaptive refresh rate. In supported situations, the refresh rate can slow for static content and rise for scrolling. POCO also specifies a 3,500-nit “multi-scenario peak brightness” figure, HDR10+ and Dolby Vision support, and an ultrasonic fingerprint reader under the display. The 3,500-nit number is a peak rating, not a published measurement of sustained brightness across the entire screen outdoors. It makes no sense to compare it directly with another company’s typical or full-screen figure as if the test conditions were identical.
The less flashy trade-off: memory and storage
Inside is Qualcomm’s 4nm Snapdragon 7 Gen 4, paired with POCO’s 3D IceLoop cooling design. That is a reasonable basis for a modern midrange phone on paper, but it is not a substitute for sustained-performance measurements or evidence about heat during gaming. More revealingly, POCO’s current global sheet specifies LPDDR4X RAM and UFS 2.2 storage for both versions. Despite some conflicting specifications elsewhere, the official sheet does not say LPDDR5X or UFS 4.0.
UFS 2.2 is an older storage standard than UFS 3.x and 4.x. That may matter more during large transfers, installations and other storage-heavy work than while reading messages. Indeed, POCO lists UFS 3.1 storage for the larger X8’s 256GB version, so the X8s name shouldn’t be taken as a promise of faster storage. The premium X8s configuration adds capacity, not a faster storage standard. The distinction helps explain the purchase choice: pay the extra $100 for room to keep files and apps, rather than expecting it to upgrade the phone’s underlying storage performance.
The regional details matter as much as the specs
For imported phones especially, “global” should be read as a product announcement, not as universal carrier certification. POCO’s published global network list includes LTE bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28 and 66, plus TDD bands 38, 40, 41, 42 and 48. Its 5G list includes n1, n3, n5, n7, n8, n20, n28, n41, n77 and n78, among others. But LTE bands 12 and 71 and 5G n71 are not listed. That is a reason to verify service carefully with a U.S. carrier rather than interpret the dollar launch prices as evidence of U.S. compatibility or official availability. Band overlap alone also doesn’t guarantee carrier activation, VoLTE or full 5G service.
POCO lists dual nano-SIM, nano-SIM plus eSIM, and dual-eSIM arrangements, but warns that eSIM support depends on the country and carrier. NFC availability can differ by market as well, so a product page mentioning NFC is not enough to promise contactless payments on the version an importer ships. Wi-Fi 6E support is also subject to regional availability, and POCO says features may be added by software update where applicable. These are specific reasons to confirm the exact regional SKU rather than relying on a seller’s generic “global version” label.
On software, the phone is advertised with Xiaomi HyperOS 3. The launch coverage identifies it as Android 16-based, but the global product sheet does not set out an X8s-specific number of major Android upgrades or a security-update end date. Xiaomi’s general security-support policy says it typically maintains device security updates for at least two years after first shipment, with longer support for some models. That general policy is not a promise of a particular number of OS upgrades for this phone.
Water resistance is another area where the details can prevent an expensive misunderstanding. The X8s has an IP68 rating based on tests involving still fresh water at up to two meters for 30 minutes. POCO expressly advises against beach and pool use and warns that resistance can deteriorate. Its warranty language does not cover liquid damage outside the stated test conditions. If buying across borders, check service rights too: Xiaomi’s Vietnam specifications state an 18-month local warranty, while its Vietnam warranty policy says Vietnam-sold devices do not receive a global warranty. That protection should not be presumed valid in another country.
Who should pay attention to the X8s?
The X8s is most interesting for someone who has grown tired of wide, heavy phones but does not want to step down to a minimal camera system or tiny battery. Its 71.8mm width, large typical battery capacity, dedicated 2.5x telephoto and PPS fast-charging support make a coherent combination. The trade-offs are equally concrete: it’s still 187g, has less battery capacity than the much larger X8, and uses LPDDR4X and UFS 2.2 even at the higher promotional price.
For now, $399 is a launch offer to verify, not a universal checkout price. The sensible decision is to judge the X8s by the local listing that names the precise variant, included charger, carrier support, warranty coverage and a realistic shipping date. If those details check out, its relatively narrow body is the strongest reason this new POCO deserves a closer look. If they don’t, the international announcement alone isn’t enough reason to import one.