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Leaked details suggest OnePlus is preparing a smaller flagship that packs a surprisingly large battery. Early tips point to a 6.3-inch phone with flagship silicon and battery life that could change buyers' expectations for compact smartphones.
What the leaks are saying
Reliable Weibo leaker Smart Pikachu has been sharing a steady stream of details about the rumored OnePlus 15T (which may be marketed as the OnePlus 15s outside China). According to the leak, the device will have a 6.3-inch display, a metal frame, and run on Qualcomm's high-end Snapdragon 8 Elite Gen 5 chipset — a combination that promises flagship performance in a smaller chassis.
Perhaps the headline spec is the battery: the tipster claims a battery north of 7,000mAh inside this relatively compact body. That would be a substantial jump from the OnePlus 13s' 5,850mAh cell and could deliver multi-day endurance for many users.
Design touches and hardware upgrades
Beyond the raw numbers, the leak mentions multi-function hardware buttons that could be customized for camera shortcuts or AI features, plus an upgrade to an ultrasonic fingerprint sensor over the optical sensor used on the 13s. Little else is confirmed yet, so details like camera hardware, display tech, and charging speeds remain unknown.
How it stacks up against rivals
If true, the OnePlus 15T would aim at the few remaining phones that trade power for smaller size — think the rumored base iPhone 17, the expected Galaxy S26 Pro, and Google's Pixel 10. Each of those targets a different audience, but the 15T's potential edge is straightforward: endurance. A 7,000mAh+ battery in a compact flagship would be a rare selling point.
Who should be most excited?
- Frequent travelers who need long uptime without bulky power banks.
- Power users who want flagship performance but prefer smaller screens.
- Anyone tired of midday battery anxiety and daily charging routines.
Why battery capacity still matters
Battery life remains one of the most tangible ways a phone improves daily life. More capacity reduces stress over low-battery warnings and gives features like AI processing and high-refresh displays room to breathe without constant top-ups. Combine a large battery with fast charging, and you get both endurance and convenience.
Of course, leaks should be taken with caution. OnePlus hasn't confirmed the 15T/15s or its specs, and design decisions could change before an official reveal. Still, the idea of a compact, high-performance OnePlus with a massive battery is a compelling proposition — especially for users who refuse to compromise on runtime.
Will OnePlus deliver on the rumor? We’ll be watching for official word and reliable hands-on reports as they surface.
Source: phonearena
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