OnePlus 15T tipped with 6.3-inch display and 7,000mAh+ battery

Well-known leaker Smart Pikachu has shared a fresh scoop on the upcoming OnePlus 15T, and it points to a device that could rank among the most powerful and long-lasting compact phones on the market.

According to the tip, the OnePlus 15T is said to feature a 6.3-inch display, a metal frame, and an updated multifunction button that may bring back the old Plus Key name familiar from earlier OnePlus models.

The headline claim is a battery of more than 7,000 mAh. For context, Samsung’s Galaxy S25 Ultra carries a 5,000 mAh unit and is notably larger. The expectation is that OnePlus would use a new silicon carbide approach to boost energy density without meaningfully increasing the phone’s footprint.

Beyond sheer stamina, the 15T may also include an ultrasonic in-display fingerprint reader and the latest Snapdragon 8 Elite Gen 5 processor. If these rumors hold, the phone would not only surpass the Xiaomi 17 in battery capacity, it could also become the most energy-efficient compact Android flagship. On paper, that mix reads like a spec sheet built to ease battery anxiety in a small form factor.

There’s no official announcement date yet, but OnePlus is expected to introduce the 15T in the coming months.