Best Rugged Smartphone With Ir And Thermal For Spotting Wildlife (tigers!)?

Hello! Thought this would be a great community to ask ...

Ill be tracking Tigers in the jungle for a few months and looking for solutions to nightvision

Curious if anyone has experience with these offbrand rugged smartphones with built in thermal imaging and dedicated IR cameras?

Somethinge like the Doogee V20 Pro or Ulefone Armor series

Hoping for some assistance at night in spotting 400lb cats past 100meters

Reviews online are pretty scattered and inconsistent and havnt seen a lot of actual footage of the IR or Thermal cameras being used outside. Im a self-funded artist with a limited budget of around $500 so true NV is out of range for now, just looking for a unique perspective on nighttime movement and animal behavior.