Canon EOS Rebel T6s EF-S 18-135mm IS STM Lens Kit Instruction Manual - Page 208

Easy Image Transfer Using the NFC Function Sending Another Image On the screen to complete the process for sending the image, press to send another image.  [Send selected] You can select the images to send in the image selection screen.  [Send img shown] Sends the displayed image. Display the image to send in advance.  If necessary, also read "NFC Function Cautions" (p.W-22).  While connected, a picture cannot be taken even if the camera's shutter button is pressed.  Images cannot be sent using the NFC function while the camera is connected to another device via a wireless LAN. In addition, the camera cannot be connected to multiple smartphones at the same time.  You can cancel the image transfer by selecting [Cancel] during the transfer.  Images larger than S2 are resized to S2 when they are sent. S2 and S3 images are sent without resizing.  While connected, disabling the smartphone's power saving function is recommended.  Settings for easy image transfer using the NFC function are not saved on the camera. W-34