vivo X300 Ultra rumored to launch March 30 - Here's what we know so far

The vivo X300 Ultra, vivo's highly anticipated camera-focused flagship, is rumored to launch on March 30, 2026, according to a tipster on Weibo. The company has been teasing the device heavily but hasn't announced an official unveiling date yet.

Following vivo's pattern from previous Ultra models, the X200 Ultra launched on March 31, 2025, and the X100 Ultra debuted on March 29, 2024 - both on Mondays. This makes March 30, 2026 (also a Monday) the most likely candidate for the X300 Ultra's debut, though vivo could still surprise us with a different date.

What to expect from the X300 Ultra

The X300 Ultra is shaping up to be vivo's most ambitious camera phone yet, building on the Ultra series' reputation for pushing mobile photography boundaries. Recent teasers and leaks have revealed several key features:

Camera system highlights

• Ultrawide camera improvements: The device is expected to feature significant upgrades to its ultrawide capabilities, though specific sensor details remain under wraps
• Teleconverter lenses: Perhaps the most intriguing feature is the inclusion of detachable teleconverter lenses, with leaked information suggesting both 400mm and 200mm options
• Video cage accessory: vivo has showcased a video cage accessory for the X300 Ultra, indicating serious video production capabilities

Leaked specifications

While official specs haven't been confirmed, leaks suggest the X300 Ultra will pack high-end hardware including:

• Latest flagship processor (likely Snapdragon 8 Gen 4 or equivalent)
• Large battery with fast charging support
• Advanced cooling system for sustained performance
• Premium display with high refresh rate

Recent X300 Ultra sightings

The device has already made appearances at major tech events:

• MWC 2026 showcase: The X300 Ultra was spotted at Mobile World Congress, giving attendees a first look at the design and camera system
• Video capabilities demonstration: vivo demonstrated the phone's video recording features, highlighting its potential for content creators
• Hands-on with accessories: The 400mm and 200mm teleconverter lenses were shown alongside the video cage accessory

What makes the Ultra series special

vivo's Ultra lineup has consistently pushed mobile camera technology forward. The X100 Ultra introduced groundbreaking zoom capabilities, while the X200 Ultra refined the formula with improved processing and new features. The X300 Ultra appears to continue this tradition of innovation.

What's next

With the rumored March 30 launch date approaching, vivo is expected to officially announce the unveiling date within the next few days. The company has been building anticipation through a series of teasers on social media and at industry events.

For now, interested buyers and tech enthusiasts can follow vivo's official channels for the latest updates, or check out the hands-on coverage from MWC 2026 to get a preview of what's coming.

The X300 Ultra represents vivo's continued commitment to pushing the boundaries of mobile photography, and its March launch would position it as a major player in the 2026 flagship smartphone market.