Bob O'Donnell, analyst and founder of Technalysis Research, said in an interview that working with various Office applications solely on a Lumia smartphone might not become commonplace for many workers, especially when they are composing or editing a detailed Excel spreadsheet. However, a larger phablet-sized smartphone, like the Lumia 640 XL, could help make it "theoretically" possible.
"The ideal setup for a worker is to have a phablet along with a tablet like a Surface," O'Donnell said, noting that he carries both the iPhone 6 Plus, with a 5.5-in. display, and a Surface Pro 3, which keeps him productive on the road.
Ironically, O'Donnell said that Windows 8 in its various versions for phone and desktop has worked well on smartphones, and not as well on desktops. "In Windows 10, they are fixing the PC part, and there aren't as many changes needed for the phone," he said.
The biggest value for Microsoft will be if workers, in large numbers, are willing to run Office 365 on the Mac and other platforms, O'Donnell said. Few people buy different sizes of devices that run on a common OS, which makes Microsoft's intention to provide apps for various operating systems more powerful. "Even many Apple supporters don't have all-Apple devices," he noted.
The Lumia 640 measures 5.5 x 2.8 x 0.35 inches and weighs 5.11 ounces. It has an 8-megapixel rear camera and a 0.9 megapixel front camera. The 2500 mAh battery supports up to 26 hours of talk time.
Both phones will have a Qualcomm Snapdragon quad-core processor running at 1.2 GHz and will have 1 GB of memory.
The larger Lumia 640 XL measures 6.2 x 3.1 x 0.35 inches and weighs 6 ounces. It has a 13-megapixel rear camera and a 5 -megapixel front The battery in the Lumia 640 XL is larger, at 3,000 mAh.
Both phones will come with a one-year subscription to Office 365 Personal for the Lumia device, as well as for one PC or Mac and one tablet, plus 1 TB of OneDrive storage and 60 free minutes per month of Skype worldwide calling.
Both will be available in single-SIM and dual-SIM LTE and dual SIM 3G variations.
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