Even as Nokia rolled out Windows Phone 7.8 updates for a selection of its handsets that include the Lumia 710, distribution of the said updates to contract-tied handsets given out by cellular carriers on the cheap, are often at the carriers' discretion, due to the nature of the restrictions and customization carriers make to the software these handsets ship out with.
T-Mobile told its customers holding the Lumia 710 to, for the lack of a better phrase, take a hike as far as updates to the newer software. The Lumia 710 originally shipped with older Windows Phone 7.5 "Mango," and is capable of running Windows Phone 7.8, which features a useful UI enhancement in the form of resizeable tiles on the home screen, allowing for more information to be displayed per instance, and better organization. T-Mobile disagrees. In a statement given to TmoNews, the carrier said:
At this time, the Nokia Lumia 710 will not receive the software update. T-Mobile is committed to enhancing customers' experience with our devices, including providing upgrades to the latest operating systems, and T-Mobile aims to deliver software upgrades when it will provide a better experience for our customers. We'll share additional information on upgrades for the Nokia Lumia 710 when they are available.
While this should come as bad news for a majority of T-Mobile Lumia 710 users, the more geeky and risk-taking ones can try manually updating the software using tools such as this. Windows Phone 7.8 is now part of Lumia 710's feature-set.