Updated with comments from Jim Cramer.
NEW YORK (TheStreet) -- It's no secret that Apple (AAPL) gets more than half of its revenue from the iPhone or that whenever Apple releases a new model, fans come out in droves for the new device.
But as soon as anticipation starts building about the next model, sales of the current version generally start to slow.
Except, that isn't happening with the iPhone 6 and 6 Plus.
Citigroup analyst Jim Suva wrote that iPhone demand is still "healthy globally given solid underlying build and sell through," upping his estimates for the fiscal third quarter to 49 million units, above the 46 million estimate comprised of several Wall Street analysts.
Though there are no official estimates, analysts polled by Thomson Reuters expect the Cupertino, Calif.-based Apple to earn $1.76 a share on $48.6 billion in revenue for the fiscal third quarter.
In the fiscal second-quarter, Apple sold 61.2 million iPhones, generating $58 billion in sales for the quarter, up 27% from the same quarter the previous year.
"I know Apple acts horribly but I think that what matters is iPhone sales have held up well and I continue to believe the right course of action is to own Apple not trade it," said TheStreet's Jim Cramer, Portfolio Manager of the Action Alerts PLUS Charitable Trust Portfolio.
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