Before the recent acquisition of an iPhone5, arrival of Yahoo mail on the iPad alerted with a ding. After setting up Yahoo on the iPhone5 I get dings on the iPhone, which offers the Push option in Fetch New Data > Advanced, and no dings on the iPad, which does not offer the Push option. Is this the cause of no Mail alerts on the iPad, and if so, why the different Yahoo options? The iPad fetches mail dutifully every time Mail is opened, with a ding, but I want the alert when it's "sleeping". Ideas?