Launch Window Looking Clearer
A trusted leaker on Weibo has shared fresh details about the Vivo X300 Ultra.
According to the leak, the phone is expected to launch in Q1 2026.
This lines up well with the X200 Ultra, which came out in April last year.
So, an early-2026 release seems very likely.
The exact date is still unknown, but more clues should appear soon.
Massive Battery Upgrade
One of the most exciting details is the battery.
The leak says the X300 Ultra could come with a huge 7000mAh battery.
This is a big upgrade over the 6000mAh cell used in the X200 Ultra.
Since the X300 Pro already features a 6510mAh Si/C battery, the Ultra model may use the same advanced battery tech—just bigger.
Next-Level Camera Setup
Rumors also point to a very powerful camera system.
The X300 Ultra might feature two 200MP cameras.
Vivo already has a 200MP periscope zoom lens on current Ultra models.
Now, the main camera may also get a 200MP sensor, making it even stronger for photos and videos.
On the back, a 50MP ultrawide camera is also expected.
For selfies, the phone may include a sharp 50MP front camera.
A True Flagship Rival
With these specs, the X300 Ultra aims to compete with other top phones like the Galaxy S26 Ultra and Xiaomi 17 Ultra.
All three are expected to launch around the same time, making early 2026 an exciting season for tech fans.
Global Release Likely
Although Vivo usually launches new phones in China first, the X300 Ultra is expected to go global after the local release.
This means users worldwide may get to try this powerful device.
Still Early — More Leaks Coming
These details are based on early leaks, so everything may change.
But the signs are clear: the Vivo X300 Ultra is shaping up to be a big upgrade with a huge battery and a top-tier camera setup.
More leaks, specs, and official teasers should appear as we get closer to launch.
Stay Updated
The excitement is just starting.
Keep watching the news for the latest updates on this upcoming flagship!