Our themes should work with any plugins. You can give a try. If a phone number is written in a recognizable phone number format, then mobile phones would recognize the number as phone number and will convert it into a link. No plugin is required, it just works.
The proper format to write a telephone number is:
<(Area Code) >
Example: +1 (565) 555-1212
More, most smart phones would recognize these formats as well: