The vivo X300 Pro might be the first modern flagship that genuinely puts battery and telephoto performance ahead of thinness and marketing fluff.
A Familiar Design, But With a Flat 6.8-inch 1.5K Panel
The X300 Pro doesn’t look like a radical redesign of the X200 Pro. According to leaks, vivo is keeping roughly the same dimensions and overall design language, but making a few practical tweaks.
The big change is on the front: the X300 Pro reportedly switches from the X200 Pro’s quad-curved screen to a flat display. vivo’s own product manager Han Boxiao confirmed on Weibo that the phone will use a flat 6.78-inch panel, while earlier leaks round that to 6.8 inches with a so‑called “1.5K” resolution, likely 1,260 x 2,800 pixels similar to the previous generation.
Boxiao also claims slimmer bezels than the X200 Pro and even compared the front design to the iPhone 16 Pro Max, suggesting vivo is aiming for a clean, symmetric look rather than extreme curves. He adds that the X300 Pro will be more compact, thinner, and more comfortable to hold than its predecessor, despite the battery upgrade.
Dimensity 9500: MediaTek’s Next-Gen Flagship Inside
Under the hood, the X300 Pro is expected to run on MediaTek’s upcoming Dimensity 9500 SoC. The chip has already leaked extensively and is said to use Arm’s new X930 (codename “Travis”) CPU core, clocked at 3.23GHz.
This generation reportedly focuses on efficiency rather than raw brute-force gains, backed by a new “Immortalis‑Drage” GPU. The exact GPU configuration and real‑world performance numbers aren’t confirmed, but vivo is positioning this as a clear step up from the Dimensity in the X200 Pro.
If the efficiency claims hold, pairing Dimensity 9500 with a massive battery could give the X300 Pro meaningful endurance gains over most 2024 flagships built around smaller cells and more power‑hungry designs.
A 7,000mAh Battery in a Flagship: Prioritizing Endurance
The headline spec is straightforward: the X300 Pro is rumored to ship with a 7,000mAh battery. For context, that’s 1,000mAh more than the X200 Pro and 1,600mAh more than the X100 Pro, continuing a steady capacity climb in vivo’s X‑series Pro line.
In practical terms, that kind of capacity should mean multi‑day battery life for moderate users and far more headroom for heavy camera, gaming, or navigation use. The trade-off, usually, is thickness and weight, but vivo is publicly promising a slimmer, more comfortable device than the X200 Pro, so the engineering challenge is clear.
Charging is the one big unknown. The X200 Pro tops out at 90W wired and 30W wireless. With 7,000mAh to fill, vivo may need to increase those speeds to keep charge times reasonable, but the leaks don’t confirm any changes yet.
Sony LYT-828 Main Camera and vivo’s Imaging Silicon
On the rear, the X300 Pro continues vivo’s camera‑centric approach. Several leaks and statements from vivo suggest the phone will use a 50MP Sony LYT‑828 sensor for its main camera.
The LYT‑828 is described as a 1/1.28‑inch (in one part of the source) or 1/1.3‑inch (in another part) class sensor and an evolution of the LYT‑818 used in the X200 Pro and X200 Ultra. Either way, it’s in the larger‑than‑average flagship range, and vivo is tying it to its own VS1 and V3+ imaging chips.
The Sony sensor supports Hybrid frame‑HDR, and vivo is promising overall improved image quality generation‑over‑generation. In plain terms, the company is betting on a mix of larger sensor, dedicated imaging silicon, and algorithm work to push its main camera further in dynamic range, noise, and detail.
A 50MP ultra‑wide camera rounds out the trio, though the leak doesn’t go deep into that module’s optics or sensor size.
200MP ISOCELL HPB “Thanos” Telephoto: vivo’s Custom Periscope Play
The most ambitious camera upgrade sits in the periscope slot. The X300 Pro’s telephoto module is built around a 200MP Samsung sensor vivo calls the ISOCELL HPB, with the internal codename “Thanos.”
This sensor is described as “deeply customized” and exclusive to vivo, with a 1/1.4‑inch optical format. It sits behind an 85mm periscope lens, giving the phone a relatively moderate optical zoom length compared to 120mm periscopes, but with a dramatically higher‑resolution sensor.
vivo is pairing the sensor with upgraded optics and stabilization. The telephoto module is said to hit CIPA 5.5 stabilization, up from CIPA 4.5 on the X200 series. In practical photography terms, that’s roughly a full stop of improvement, allowing shutter speeds about twice as slow for the same sharpness in low light or when zoomed in.
The lens itself uses fluorite glass to reduce dispersion and chromatic aberrations, carries ZEISS T* coating, and is APO‑certified. The whole stack is designed to deliver cleaner, higher‑contrast telephoto images with fewer color fringing issues, an area where many long‑zoom modules still struggle.
vivo has even shown a comparison of the X300 Pro’s 200MP 1/1.4‑inch setup against two “mainstream” competing telephoto modules: a 50MP 1/1.56‑inch sensor with 70mm lens, and a smaller 50MP 1/2.51‑inch sensor with 120mm lens. On paper, vivo’s approach trades some reach flexibility for sensor size and resolution, which could pay off if the crop‑zoom quality is as good as the hardware suggests.
X300 Lineup and Launch Timing
The X300 Pro won’t launch alone. The broader X300 series is expected to include a standard X300, a possible compact “Pro mini” variant, and an X300 Ultra arriving early next year.
Leaks point to an October launch in China for the X300 and X300 Pro, with a global release window in December. Specific regional availability, pricing, and any feature differences outside China are still unknown.
For now, all of this remains pre‑launch information, a mix of official Weibo teasers and consistent leaks. The overall picture, though, is clear: vivo is doubling down on battery capacity and telephoto hardware, while refining rather than reinventing its core design.
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