My New iPhone 16 Pro Battery Drains Too Fast

I bought a brand-new iPhone 16 Pro just 10 days ago and immediately noticed the battery drains extremely fast. I don’t even play games or spend much time on social media, yet the battery life is awful. I contacted Apple support, and they assured me the issue would improve over time. However, I’ve seen no improvement so far, and the problem persists. This is very disappointing for a premium phone, and I rely on it daily. Apple, please address this battery drain issue urgently or provide a real solution. I expect better performance and support given the price I paid for this device.