Cellular Networks

Windows Phone 8.0 smartphones may not be upgradeable to 8.1

Nokia issues differing statements, while Microsoft is mum on device upgrade question

Tablet App Lets Subway Find the Best Sandwich Artists

Some users grumble about Twitter’s photo previews

Some are bemoaning a change that puts images in their streams

Citrix’s XenMobile 8.6 to offer one-touch entry into mobile GoToMeeting

Users can sign into Worx apps with a simple PIN

Smartphone growth still racing ahead at record pace

Back-to-back quarters of record growth mean 1 billion smartphones expected to ship in 2013

Motorola’s Project Ara aims to create a customizable mobile platform

Like Android, Ara aims to lower barriers to entry for mobile makers

Samsung’s share grows while Apple’s declines in Q3 smartphone market

Chinese maker Huawei also increased share to take third place in the smartphone market, Strategy Analytics said

Verizon Wireless to sell BlackBerry Z30 in Nov. for $200 and two-year pact

New BlackBerry device has 5-in display and 2,880 mAh batterysaid to last 25 hours with mixed usage

Samsung kicks off first developer conference

Reaches some developers who were unable to get tickets to Google I/O

How 4 companies use mobile apps to court customers