Upcoming Smartphones to Launch in December 2025: OnePlus 15R, Vivo X300 Series, Realme P4x 5G, and More

Every year, December, the final month, brings a host of tech announcements and even this time it is going to be a bit special for smartphone enthusiasts in India. Several smartphone manufacturers are planning to bring a fresh line of mid-range and premium devices for the Indian buyers. This will give plenty of reasons to buyers to hold off on their next purchase for just a few more days. Companies like OnePlus, Vivo, Realme, and more are planning to unveil their powerful devices in December 2025. Let’s check out the phones launching in December

OnePlus 15R – December 17

One of the highly anticipated launches this month is the OnePlus 15R. The smartphone is all set to arrive in India on December 17 with power-packed features. This will be the first device to be powered by Qualcomm’s latest Snapdragon 8 Gen 5 chipset. The device will be available in two color options, including Charcoal Black and Minty Green. The brand is also stating that the OnePlus 15R will be packed with multiple IP ratings.

Early rumors suggest the smartphone to be packed with a dual camera setup along with Android 16-based OxygenOS 16.

Vivo X300 and X300 Pro – December 2

The next lineup is the Vivo X300 series, slated to launch on December 2. The lineup will include X300 and X300 Pro. Both devices will be powered by MediaTek’s 3nm Dimensity 9500 processor and come equipped with dual imaging chips, including Pro Imaging VS1 and V3+.

For the camera, the X300 Pro will pack a Zeiss-tuned triple camera system with a 50MP Sony primary lens and a massive 200MP telephoto shooter. The lineup will run on the Android 16-based OriginOS 6 out of the box.

Realme P4x 5G – December 4

Realme will launch its Realme P4x 5G on December 4. The device will be sold via the e-commerce site Flipkart. It will be powered by the Dimensity 7400 Ultra chipset and will be equipped with a 144Hz display. To power the phone, the company will bring a massive 7000mAh battery to the Realme P4x 5G along with a 45W fast charging. There will be an addition of a 5,300 sq mm vapor chamber.

OnePlus Ace 6T and Oppo Reno 15C

Other than these devices, two more smartphones are coming in December, including the OnePlus Ace 6T, a China-exclusive model powered by Snapdragon 8 Gen 5, and the Oppo Reno 15C, which is expected to arrive with a 1.5K display, Snapdragon 7 Gen 4, and a triple-camera setup.