Android Notification Issue

HI,

Working though the companion app docs and trying to send a notification to my android phone with a picture attached.

Using the example i created the following automation:

id: phonenote
alias: Notify Mobile app
trigger:
- entity_id: binary_sensor.postbox_button
  platform: state
  to: "on"
action:
    service: notify.mobile_app_sfs9
    data_template:
      message: "Something happened at home!"
      image: "https://www.home-assistant.io/images/home-assistant-logo.svg"

I’ve tried using data and data_template and neither work. If i remove the image: i get the notification and text. Anyone see what i a missing?

OK, sorted it… image must be of the correct format ie jpeg!

id: phonenote
alias: Notify Mobile app
trigger:
- entity_id: binary_sensor.postbox_button
  platform: state
  to: "on"
action:
    service: notify.mobile_app_sfs9
    data:
      title: "Motion Detected in Backyard"
      message: "Something happened at home!"
      data:
        image: "https://vignette.wikia.nocookie.net/universeconquest/images/e/e6/Sample.jpg"

This gives a small thumb nail. Is there a way to see it larger in the notification or is that an android thing?