Hello! Poco F3 is a great phone that offers powerful performance and great value for money. It is equipped with a powerful Snapdragon 870 processor, 6GB or 8GB of RAM, and 128GB or 256GB of storage. It also has a 6.67-inch AMOLED display with a 120Hz refresh rate and HDR10+ support. The camera system is also impressive, featuring a 48MP main sensor, a 13MP ultra-wide, and a 5MP macro lens.
As for your concern about dead booting, it's important to note that no phone model is immune to technical issues. However, Poco F3 has been receiving positive feedback from users for its overall performance and reliability.
If you're looking for a phone that can provide a powerful and seamless performance, Poco F3 is definitely a good choice. However, if you're more comfortable with Poco X3 Pro and you've had a good experience with it, you can stick to it as well. Ultimately, it's your personal preference based on your needs and budget.