Xiaomi has officially unveiled its new budget phone, the Redmi 15 4G, featuring a large 6.9-inch IPS LCD display with a 144Hz refresh rate. The phone is powered by a Qualcomm Snapdragon 685 processor and includes a 50MP rear camera and an 8MP front camera. It also has a massive 7,000mAh battery with 33W fast charging support and is IP64 dust and water resistant.