Apple (AAPL)  's ramp-up of its highly-anticipated iPhone 8 is reportedly facing supply and other issues that are causing analysts to reduce their shipment expectations for the year. 

Noted Apple analyst Ming-Chi Kuo of KGI Securities recently predicted the production ramp-up of the 10th anniversary edition of the iPhone could be delayed to October or November, rather than the usual August to September period. As a result, Apple may ship just 80 million to 90 million iPhones in the second half of 2017, vs. 100 million to 110 million iPhones shipped in the year-ago period, Kuo wrote in a recent note. 

On Wednesday, Bank of America analysts lowered their iPhone shipment estimates for the year by 11 million due to supply chain concerns having to do with fingerprint and 3D sensors for the new model.   

Apple is expected to release a fully redesigned iPhone 8, as well as updated versions of the iPhone 7 and iPhone 7S this fall. The new iPhone could cost over $1,000 and might be called the iPhone 8, iPhone X, iPhone Pro, or simply iPhone. 

Here's a list of supply and other reported issues that could delay the availability and functionality of the three new smartphones. 

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