It looks like T-Mobile will be facing an uphill battle come April 12th. On April 12th, the shareholders will be voting on whether or not MetroPCS should form a merger with T-Mobile USA. T-Mobile needs the shareholders to vote for the merger in order to complete the deal. It has already received the go-ahead from the Department of Justice as well as the FCC. However, one proxy adviser is looking to make sure the deal doesn't go through.