After much hype and speculation, the Samsung Galaxy S3 superphone was finally introduced for its global launch in London, UK, on May 3rd, 2012. Running Android 4.0 in a thin slate formfactor, the S3 will rollout across more than 150 countries worldwide over the next few months. Has Samsung upgraded successfully from the previous S2 model to the new S3? Is Samsung’s Galaxy S3 a current or next Apple iPhone killer? We recently trialed the S3 and this published report from our Wireless Device Strategies (WDS) service, available for clients, delivers our initial verdict.