You can use any electronic device within range as if it were in your hands. This is not a telekinesis effect. Rather, this spell allows you to simulate a device’s mechanical functions electronically. You are able to access only functions that a person using the device manually would be able to access. You can use remote access with only one device at a time.
With this spell, you can target any creature with whom you have spoken previously, as long as the two of you are on the same plane of existence. When you cast the spell,the nearest functioning telephone or similar communications device within 100 feet of the target begins to ring. If there is no suitable device close enough to the target, the spell fails.The target must make a successful Charisma saving throw or be compelled to answer your call. Once the connection is established, the call is crystal clear and cannot be dropped until the conversation has ended or the spell’s duration ends. You can end the conversation at any time, but a target must succeed on a Charisma saving throw to end the conversation.
This cantrip allows you to activate or deactivate any electronic device within range, as long as the device has a clearly defined on or off function that can be easily accessed from the outside of the device. Any device that requires a software-based shutdown sequence to activate or deactivate cannot be affected by on/off.