MVNO services are a type of mobile network service that is provided by a third party instead of a traditional mobile network provider. These services are typically provided through a contract with one of the major mobile network operators, such as AT&T or Verizon. MVNOs are able to offer a variety of services, such as voice, data and text, at competitive rates. The services are often tailored to a specific demographic or market segment, such as those who need a low-cost option, those who want unlimited data, or those who are looking for international roaming.