EE has announced plans to double its 4G LTE network speeds in ten U.K. cities by the summer. The move will boost headline speeds to 80Mbps, and increase the average speed to 20Mbps for both new and existing subscribers. The carrier says this is part of its ambition to “stay one step ahead” as rival carriers prepare to launch their own 4G networks in the coming months.

Babel, a new chat service rumored to be on its way from Google, has been shown off in a bunch of leaked screenshots ahead of its official unveiling. The images reportedly come from a Google employee, and they show Babel running on a desktop. Not only do they confirm the service’s name, but also a number of its features.

WhatsApp has denied that it is holding sales talks with Google following reports that the company is on the verge of a $1 billion buyout. One source claimed last week that the hugely popular cross-platform messaging service has been in talks with Google for the last 4-5 weeks, but WhatsApp’s business development lead, Neeraj Arora, denies any discussions.

We’re not saying *which* interests, mind you.

The Tumblr app for Android devices got an update today that’s more of a visual redesign than anything else. The app has a new Post Anything screen that will let you post photos, videos, quotes, chats, links, and text, all with a single tap from a single screen. This changes things from the previous design, in which you had to post each type of item from its own screen, similar to the web interface.

The iPhone 5 is set to launch on T-Mobile this Friday along side T-Mobile’s new “uncarrier” no contract strategy. Not wanting to get left behind, Virgin Mobile is planning to win over T-Mobile’s pre-paid customers by offering them $100 to switch sides.

In a new ad campaign called “Retain Your Brain” Virgin is offering $100 to T-Mobile customers to move their number over to one of its unlimited plans that start at $35 a month and could result in $334 of savings over two years.