Although Straight Talk has long advertised its mobile broadband service as “unlimited”, the company acknowledged in September that it only offered 2.5 GB per month. After hitting that limit, the provider slows down speeds on its $45 monthly plan. That speed bump is now good for 3 GB of speedy service, Straight Talk said on Wednesday. Straight Talk doesn’t have networks of its own but instead buys wholesale service from traditional carriers and resells it. Essentially, you get the same service and coverage provided by AT&T, T-Mobile or Verizon, for example, at a discount on your iPhone, Android handset or other smartphone.