How can I transfer photos from a camera to a phone without using a computer?

To transfer photos from a camera to a phone without using a computer, you can use a memory card reader that is compatible with both your camera's memory card and your phone. Simply remove the memory card from your camera, insert it into the memory card reader, and then connect the memory card reader to your phone using a USB OTG (On-The-Go) cable. You can then access and transfer the photos from the memory card to your phone.