Phone links are not working inside iframe though it does work in div in iOS9. how to make phone links make work in iOS9 safari?

Hi I was trying phone links inside iframe in iOS9. Phone application doesn't open up in safari in iOS9. When i tried same link inside then it is working there.

I was trying below anchor tag. This code opens up phone application when put inside div. But same code doesn't work inside iframe. Please suggest how does it make to work inside iframes as well?

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