A petition against a phone unlocking ban that was introduced last month has now received more than 100,000 online signatures, the threshold petitions must reach to get an official response from the Obama Administration. The petition calls for the White House to make cellphone unlocking legal again, without having to go through a carrier.

British carrier O2 has released a new app for Android and iOS called O2 Tracks, which allows users to listen to the U.K.’s official top 40 singles to their smartphone. It’s available to download now from the App Store and Google Play, and O2 customers can enjoy the service for just £1 ($1.56) per week.

Sprint has today announced its fourth quarter and full year financial results for 2012, and they don’t make for pleasant reading. Despite healthy smartphone sales driven by the iPhone, the carrier reported a loss of $1.3 billion for during the three-month period, which is the same figure it lost during Q4 2011. It also saw more than 1 million Nextel subscribers jumping ship.

EE has today announced plans to rollout its 4G LTE network to another 27 towns in the United Kingdom by June 2013, expanding its 4G coverage to 55% of the U.K. population. The carrier is currently the only network to offer a 4G service in the U.K., but its latest announcements comes as rivals begin making preparations for their own 4G services.

If you live in the United Kingdom and you’re planning on picking up the Xperia Z, then you might want to get your order in as early as possible. Sony is giving those who pre-order before February 27 a free pair of its MDR-1R headphones, which usually sell for $299.99 (approx. £190).