vivo X300e Leak: Snapdragon 8 Gen 5 7,100mAh Battery, and 50MP Zeiss Periscope in a Sub-8mm Body

A new vivo X300e leak suggests the phone will combine a Snapdragon 8 Gen 5 chipset, a large silicon-carbon battery, and a triple Zeiss camera system inside a chassis thinner than 8mm. According to tipster Digital Chat Station on Weiboand independently supported by a TENAA certification listing, the vivo X300e is shaping up as the reported sixth model in vivo’s camera-focused X300 lineup, though the company has not officially confirmed the device.

The X300e name first surfaced in February 2026, when its IMEI appeared in the GSMA database alongside the vivo X Fold 6. On 28 June 2026, a device carrying model number V2612A cleared TENAA certification, independently confirming several hardware details ahead of the tipster’s fuller specification rundown.

All details below remain unconfirmed by vivo. Readers should treat these specifications with appropriate caution until an official announcement is made.

Why It Matters

If accurate, the vivo X300e would represent one of the more aggressive attempts yet to combine a large battery with an ultra-slim body, a combination that has traditionally required design trade-offs. A confirmed 7,100mAh cell in a 7.99mm chassis would place the device among the thinnest large-battery phones reported so far in 2026.

Key Highlights

Display: 6.59-Inch Flat 1.5K OLED, TENAA-Confirmed

According to the tipster, the X300e will use a flat 6.59-inch 1.5K OLED panel. The TENAA listing independently confirms a 2750×1260 resolution AMOLED display, aligning with the leak on this specification.

The flat panel marks a departure from the curved edges seen on some earlier X-series devices. Flat displays are generally favored by users who prioritize screen protector compatibility and reduced accidental edge touches. TENAA’s listing also notes an octa-core processor with a 3.8GHz primary core clock, consistent with the Snapdragon 8 Gen 5’s Oryon-based core configuration and supporting the tipster’s chipset claim.

Chipset: Snapdragon 8 Gen 5 Reportedly Shared With the X300 FE

Digital Chat Station’s report indicates the X300e will use the same Snapdragon 8 Gen 5 platform found in the vivo X300 FE. With the newer Snapdragon 8 Elite Gen 6 now available for 2026 flagships, opting for the previous-generation chip would position the X300e as a value-focused premium device rather than a cutting-edge flagship.

Reported Memory Configuration

Camera: Triple Zeiss System With 50MP Periscope

The rear camera system is reported to include a 50MP main sensor, a 50MP Sony IMX8 periscope telephoto lens, and an 8MP ultrawide camera, all said to carry Zeiss imaging tuning consistent with vivo’s existing X-series partnership.

Reported Camera Specifications

A 50MP periscope at this resolution tier would be notable, since many competing devices, even at higher price points, typically use lower-resolution periscope sensors. Dual-view video recording is plausible based on vivo’s standard X-series feature set but has not been specifically confirmed for this model.

Battery: 7,100mAh in a 7.99mm Chassis

The X300e’s most striking reported specification is its battery capacity relative to its thickness. TENAA’s certification confirms body dimensions of 157.52×74.33×7.99mm and a weight of 203 grams, while the tipster cites a 7015mAh rated capacity (7100mAh typical), paired with 90W fast charging, separately supported by 3C certification.

Achieving this combination would likely require silicon-carbon battery technology, which offers higher energy density per unit volume than conventional lithium-ion cells, allowing larger capacities in thinner chassis without a proportional weight increase.

Reported Charging Performance

Design: Square Camera Module, Metal Frame, Fingerprint Sensor Unconfirmed

The X300e is reported to move away from the circular camera bump used on several X300 variants, instead adopting a square-shaped module in the upper-left corner of the rear panel. Metal frames are said to wrap the chassis sides, consistent with vivo’s premium build positioning for the X series.

An ultrasonic fingerprint sensor has also been mentioned in tipster reports, but this detail is explicitly described as unconfirmed, even by Digital Chat Station.

vivo X300e vs. vivo X300 FE: How They Reportedly Differ

*All X300e figures are unconfirmed, based on leaks from Digital Chat Station and TENAA certification data.

The Bigger Picture

If these leaked specifications hold up, the X300e would function as an enhanced variant of the X300 FE, offering a larger screen, a significantly bigger battery, and a redesigned camera module while retaining the same processor. This positions it as a mid-cycle addition rather than a next-generation flagship, similar to how vivo has expanded the X300 series with multiple variants targeting different price and feature segments.

What to Watch Next

vivo has not confirmed a launch date for the X300e. Based on the company’s typical release cadence for the X series, an initial China debut is the most likely first market, with global availability to follow if the device launches internationally at all. The TENAA certification, a prerequisite for domestic sale in China, being filed in late June 2026 suggests a China launch could arrive within weeks rather than months, though this remains speculative until vivo confirms it.

Bottom Line

The vivo X300e leak, sourced from tipster Digital Chat Station and partially corroborated by TENAA certification, points to a slim, large-battery variant of the X300 FE with a Snapdragon 8 Gen 5 chipset and a 50MP Zeiss periscope camera. None of these details have been confirmed by vivo, and readers should treat pricing, launch timing, and unconfirmed specs like RAM, storage, and the fingerprint sensor with caution until an official announcement arrives.