Need help setting up with iPhone hotspot then sdcard

So my downstairs neighbor’s ex got his 100k plus bond posted by his mommy. He tried to kill her. Then he tried to bust in her door with a shovel and then mine. She got one of these little cameras and I’m setting it up on my deck where it can’t be reached to prove he’s breaking the restraining order. We are out of work due to covid so we don’t have money for internet/WiFi. It says we can run it on a sd-card, but need to set it up first but I can’t get it to connect to my iPhone 10’s hotspot. Can someone please help me. We are scared he’s going to kill one of us.

Which camera did you purchase? For motion activated detection, internet is required as far as I know on all the Wyze cameras.