Another possible factor in play, said Chitika, was the record-setting pre-orders for the iPhone 6 and 6 Plus. Customers who have ordered a new phone, or plan to buy one Friday at an Apple or carrier retail store, would be uninterested in upgrading their older-but-soon-to-be-discarded-or-sold iPhones.
The slow uptake by iOS 8 ran counter to Chitika's forecast of last week. "It only took a week following the release of iOS 7 for the majority of iOS traffic to be coming from that version, so the release of iOS 8 can reasonably be expected to elicit a similar reception," Chitika said on Sept. 8.
Some iPhone users may simply pass on iOS 8. Last year's iOS 7 was a major upgrade in that it was a visual refresh of the mobile operating system, the first since the 2007 debut of what was then called "iPhone OS." Without a similar reason to upgrade — iOS 8 looks very similar to its immediate forerunner — some may simply decide it's not worth the trouble.
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