Hello! I'm sorry to hear about the issues you are experiencing with your Poco F3. If you're looking for a new phone with a good camera and responsive performance under 15k, here are some recommendations:
1.
Realme 8 Pro - The Realme 8 Pro features a 108MP quad-camera setup which is great for photography enthusiasts. It also offers a smooth and responsive experience with its Snapdragon processor.
2.
Xiaomi Redmi Note 10 Pro - Known for its excellent camera performance and vibrant AMOLED display. The Redmi Note 10 Pro also provides smooth performance for everyday tasks.
3.
Samsung Galaxy M32 - Samsung's Galaxy M32 offers a 64MP quad-camera system and a responsive user experience. The AMOLED display is another highlight of this device.
4.
POCO X3 Pro - If you're open to sticking with Poco, the POCO X3 Pro is a great option with a powerful Snapdragon processor for smooth performance and a decent camera setup.
5.
Infinix Zero 8 - The Infinix Zero 8 offers a versatile camera system and good performance within your budget. It's a good option if you're looking for something different.
These are some options you can consider when looking for a new phone under 15k with a good camera and responsive performance. Make sure to check reviews and visit a store to see which one suits your needs best. Hope this helps!