What is your budget ? Do you prefer Apple or Android ? Are you wanting to use for professional work or just casual ? Not enough information given for a specific recommendation. I prefer flagship Samsung Galaxy, but others prefer flagship iPhones. Several opinions out there, no single answer will fit all.
If you’re looking for a handset with an excellent camera, then the Samsung Galaxy S21 Ultra could be exactly what you’re looking for. The Samsung Galaxy S21 Ultra has an impressive 108MP sensor – a megapixel count that most of the best professional cameras are nowhere near!
Rear cameras: 108MP f/1.8, 10MP f/2.4, 10MP f/4.9, 12MP f/2.2 ultrawide | Front camera: 40MP