Xfinity Mobile customers are getting a free priority boost to QCI 8 on Verizon's network
Giving customers top technical priority

Better flexibility and lower entry costs are two great reasons to pick a competent MVNO over their parent networks, the Big Three of Verizon, AT&T, and T-Mobile. In many cases, though, an MVNO's reliance on another company's infrastructure leads to less favorable connection handling and bandwidth, or a lower Quality of Service.