https://business.forums.bt.com/t5/Archive/Unknown-error/m-p/80290#M26113 <P>There's a PST file that i cannot openon iPhone 7! It gives the following message: 'Unknown error.' Any thoughts why?</P> Fri, 16 Feb 2018 13:00:13 GMT Irvvin29 2018-02-16T13:00:13Z https://business.forums.bt.com/t5/Archive/Unknown-error/m-p/80290#M26113 <P>There's a PST file that i cannot openon iPhone 7! It gives the following message: 'Unknown error.' Any thoughts why?</P> Fri, 16 Feb 2018 13:00:13 GMT https://business.forums.bt.com/t5/Archive/Unknown-error/m-p/80290#M26113 Irvvin29 2018-02-16T13:00:13Z