Canon EOS Rebel T6s EF-S 18-135mm IS STM Lens Kit Instruction Manual - Page 196

Connecting with the NFC Function 3 Operate the Camera using Camera Connect.  Perform further operations using Camera Connect. For the operation procedure, see page W-27. The settings for communicating with a smartphone are now complete. NFC Function Cautions  When touching the smartphone to the camera, be careful not to drop the camera or smartphone.  Do not touch the smartphone to the camera with too much force. Doing so can scratch the camera or smartphone.  Just holding the smartphone close to the mark may not establish a connection. Be sure to touch the mark with the smartphone so that they come into contact with each other.  Recognition may be difficult depending on the smartphone. Touch slowly while changing the position or angle.  Another application on the smartphone may start depending on how you touch. Check the position of the p mark, then touch again.  A connection cannot be established via the NFC function while shooting with the camera, when the power switch is set to , when there is no card, or when the LCD monitor is closed with the screen facing inward.  When touching the smartphone to the camera, do not leave anything between the camera and smartphone. In addition, when a case is attached to the camera or smartphone, communication may not be possible via NFC function.  When Battery Grip BG-E18 (sold separately) is attached, a connection cannot be established via the NFC function.  The camera cannot be connected to two or more smartphones at the same time.  By default, the connection settings via the NFC function are saved as the fourth setting (a setting dedicated to NFC connection) under the name [SET4(NFC)]. When you connect the camera to another smartphone via NFC, [SET4(NFC)] will be overwritten.  A connection can be established even when the camera's power is in the auto power off state. However, if a connection cannot be established, cancel auto power off, then establish a connection. W-22