Based on this product's specifications, here are some alternatives and similar models
Smartphone Xiaomi T15 Pro 6.83" — 12 GB RAM, 512 GB, MediaTek Dimensity 9400+, IP68, 5500 mAh (Black)
Summary description:
Xiaomi T15 Pro is a flagship smartphone with a 6.83" 2772×1280 display (144 Hz, HDR10+ up to 3200 cd/m²) powered by MediaTek Dimensity 9400+. It has 12 GB LPDDR5X RAM and 512 GB internal storage, a triple rear camera with 50 MP main sensor and OIS, 32 MP front camera, 5500 mAh battery with Hypercharge and wireless charging, IP68 protection and Dolby Atmos audio. Ideal for multimedia, gaming and long everyday use.