Upcoming smartphones in December 2025: Vivo X300 series, Redmi 15C and more phones launching this month

Several major smartphone launches are lined up for December 2025 across flagship, midrange, and budget categories. Brands such as Vivo, Xiaomi, Realme, OnePlus, and Oppo will introduce new devices in India throughout the month. The lineup begins with Vivo’s X300 series, followed by new models from Xiaomi and Realme, leading up to the global debut of the OnePlus 15R. Here’s a detailed look at the phones arriving this month.

Vivo X300 series
Vivo will kick off the month with the launch of the Vivo X300 and Vivo X300 Pro on December 2, 2025. Both models feature LTPO AMOLED screens — 6.31-inch on the X300 and 6.78-inch on the X300 Pro — with peak brightness rated at 4,500 nits. The phones are powered by MediaTek’s Dimensity 9500 chipset. The X300 features a 200MP primary camera, while the Pro variant offers a 50MP primary shooter paired with a 200MP zoom lens. Battery capacities stand at 6,040 mAh and 6,510 mAh respectively. Pricing is expected around Rs 65,000–70,000 for the X300 and around Rs 1,00,000 for the X300 Pro.

Xiaomi Redmi 15C
Xiaomi will introduce its budget-focused Redmi 15C on December 3, 2025. The model features a 6.8-inch IPS LCD screen, Dimensity 6300 chipset, up to 256GB UFS 2.2 storage, and a 50MP rear camera. A 6,000 mAh battery powers the device. It is expected to be listed on the company’s official website and Amazon.

OnePlus 15R
Set for a December 17 global debut, the OnePlus 15R could be the first smartphone powered by the Snapdragon 8 Gen 5 chipset. Other features include an 8,000 mAh battery, 165Hz AMOLED screen, and two 50MP cameras. The Indian price is expected to be around Rs 50,000.