December 2025 is set to conclude the year with a blockbuster lineup of new smartphones. The OnePlus 15R, with its new Snapdragon 8 Gen 5 chipset, is a flagship powerhouse. The camera-centric Vivo X300 Series will also lead the charge. They are joined by the budget-friendly performance device, the Realme P4x 5G, and other major releases. Find all the confirmed launch dates, rumored specs, and expected price details for the month.
Upcoming Smartphones in December 2025 (India)
December 2025 will witness the launch of several key mobile phones. Some of these include the OnePlus 15R, Vivo X300 series, and Realme P4x 5G.
Smartphone Launch Dates & Key Specs
| Smartphone | Launch Date | Chipset | Key Highlights |
|---|---|---|---|
| OnePlus 15R | Dec 17 | Snapdragon 8 Gen 5 | IP66/IP68/IP69 ratings, Android 16, dual camera |
| Vivo X300 / X300 Pro | Dec 2 | MediaTek Dimensity 9500 (3nm) | Zeiss optics, V3+ imaging chip |
| Realme P4x 5G | Dec 4 | Dimensity 7400 Ultra | Vapour chamber cooling |
| OnePlus Ace 6T | December (China) | Snapdragon 8 Gen 5 | Rebrand of OnePlus 15R, narrow bezels |
| Oppo Reno 15C | December | Snapdragon 7 Gen 4 (expected) | Triple rear camera (50MP + 8MP + 50MP) |
OnePlus 15R
- Launch Date: December 17, 2025
- Availability: Amazon India
- Colours: Charcoal Black, Minty Green
Key Specs & Features
- Processor: First smartphone powered by Snapdragon 8 Gen 5
- Multiple durability ratings: IP66, IP68, IP69, IP69K
- Operating System: Android 16-based OxygenOS 16
- Camera: Dual-rear camera in rectangular module
- Right-side mounted power & volume buttons
Vivo X300 Series (X300 Pro & X300)
- Launch Date: December 2, 2025 [12 PM (IST)]
- Availability: Vivo Online Store India
Key Specifications:
- Chipset: 3nm MediaTek Dimensity 9500
- Imaging: Pro Imaging VS1, V3+ chip
- Operating System: Android 16-based OriginOS 6
Vivo X300 Pro Camera Setup (India)
- 50MP Sony LYT-828 (f/1.57) primary
- 50MP Samsung JN1 ultrawide (f/2.0)
- 200MP HPB APO telephoto (f/2.67)
- Zeiss-tuned imaging
Realme P4x 5G
- Launch Date: December 4, 2025 [12 PM (IST)]
- Availability: Flipkart
Key Specs & Features:
- Processor: MediaTek Dimensity 7400 Ultra 5G chipset
- 144Hz refresh rate display
- Battery: Massive 7,000mAh Titan Battery
- Charging: 45W wired fast charging
- 5,300 sq mm vapour chamber cooling
- Other specifications to be revealed soon
OnePlus Ace 6T (China Launch)
- Launch Window: December 2025
- Colours: Black, Green, Violet
Expected Specifications:
- Processor: Powered by Snapdragon 8 Gen 5
- Expected global rebrand of OnePlus 15R
- Flat display with narrow bezels
- Rumoured dual-camera square module
Oppo Reno 15C
- Launch Window: December 2025
Expected Specifications (Leaks):
- Display: 6.59-inch display, 1.5K resolution
- Up to 120Hz refresh rate
- Processor: Snapdragon 7 Gen 4 chipset
- Rear Cameras:
- 50MP Sony LYT-600 primary
- 8MP ultrawide
- 50MP Samsung JN5 telephoto
Other Expected Smartphone Launching in December 2025
- Vivo S50 Pro Mini
- Vivo S50
- Redmi 15C 5G
- Honor GT 2 Series
- Poco C85 5G
- Redmi Turbo 5
- Vivo X300 FE
- Oppo A6x
- Redmi Magic 11 Air
Feature Image credits: AI
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