Google’s reverse image search is a breeze on a desktop computer, but when you’re on a mobile device, there are options. Bing from Microsoft also does reverse image searches, but calls it “visual search” Google Lens also offers a reverse search option, but Lens is more about helping you perform tasks, like instant translation, or finding a product to buy, than finding a source image. There are a few search engines dedicated to looking up just pictures, but not all of them work directly with your smartphone or the default browsers.”]
Source: https://uk.pcmag.com/mobile-phones/71657/how-to-do-a-reverse-image-search-from-your-phone