Why not go one step further than taking a selfie with your iPhone and Apple Watch. Since you can use the Apple Watch as a remote control for your iPhone camera why hold your iPhone at arms length when you can prop your camera up and use your watch to preview the shot, zoom in and out and then either take the photo or use the three second timer so you can get a better pose.
Here’s a video I made to show you how it works. Below the video I have listed the items I used in the video.
Sirui professional mini tripod: https://amzn.to/3cxshbM
SMALLRIG Smartphone Tripod Mount holder Clamp,Tripod Phone Adapter: https://amzn.to/2ZaC6az
Apple Watch – Series 6: https://amzn.to/32e0Xf0
iPhone 12: https://amzn.to/2I7RVcH