GoKawiilHadlee Simons / Android Authority
TL;DR The vivo X300 Ultra is tipped to launch in China at the end of March 2026. Its global launch is expected to follow later.
Leaked specs include up to 16GB of RAM and 1TB of storage across three colors.
The launch event may also include the vivo X300s and the Pad 6 Pro tablet.
Update, March 19, 2026 (04:40 AM ET): vivo has confirmed that the vivo X300 Ultra will launch in China on March 30, 2026, at 7 am ET. The launch poster also confirms the phone’s design, which we had so far seen only with the telephoto extender.
Original article, March 18, 2026 (12:01 PM ET): vivo has been drip-feeding technical information about its upcoming vivo X300 Ultra flagship over the past few weeks, and we’re all in on the hype ever since we got to see the phone and its 400mm telephoto extender at MWC 2026. vivo confirmed that the X300 Ultra will be coming to global markets, but we still don’t know when the phone will launch. A new leak is finally giving us a timeframe for the X300 Ultra’s launch in vivo’s home market.
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According to reliable leaker Digital Chat Station on Weibo, the vivo X300 Ultra will launch in China at the end of this month. The phone is expected to come in 12GB+256GB, 12GB+512GB, 16GB+512GB, and 16GB+1TB variants, spread across Black, Silver, and Green color variants.
While we don’t have an exact date yet, “end of the month” gives us the last few days of March. Looking at the calendar, the vivo X300 Ultra could launch on March 26, 27, 30, or 31 (excluding weekend holidays, since companies don’t usually launch on those days outside of events). vivo hasn’t yet confirmed the launch date on any platform.
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