[phone] tag mixup

Just installed WP Mobile Detect for the first time and tried using the [phone] tag. Browsers seem to confuse the tag with some existing [phone] tag that creates a click-to-call telephone number button. Moreover, the unwanted button shows on phone. Other tags (such as [device] seem to work.

How do you make this work?

My text:
[phone]this text for phones only[/phone]