In the Page Title? Personally I would hate that, but I am a jaded marketer lol. If you have a callout on the page, and markup the phone number, Google will know how to pull your number in SERPs and users may be more likely to trust. I see no SEO value in doing it, if you really wanna squeeze phone calls maybe test a few different CTA placements on the page or otherwise make it easier to find.
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