US Carrier Basics
They are only four major carriers in the United States
AT&T T-Mobile Verizon and Sprint.
Services like Net10 Straight Talk Boost Virgin Mobile are not true carriers.
These services depend on the 4 major cellular carriers for their operations.
Thus they lease these towers for their service
They are therefore referred to as a MVNO or Mobile Virtual Network Operators.
For instance Boost Mobile runs off Sprint so does Virgin Mobile.
This site is dedicated for people trying to find free or affordable cellular phone service at the lowest cost
Small MVNO example list with there respective parent carrier
Virgin Mobile and Boost = Sprint (prepaid divisions of Sprint)
Tracfone= all 4 carriers ( Tracfone also owns Straight Talk and NET10 thus they also use all 4 carriers look at the packaging next time you buy one CDMA-S= Sprint CDMA-V=Verizon GSM-A= ATT incidentally I used a Net10 cellular phone CDMA-V for Page Plus for a cheaper plan $12 bought it brand new from walmart thus certain NET10 phones can work on other carriers but thats another subject.
Page Plus= Verizon (an independent MVNO that is very cheap )
Ring Plus= Sprint (a free cellphone MVNO also have with very cheap plans )
Cricket Wireless=AT&T (an At&T company acquired in 2015)
Assurance Wireless= Sprint/Virgin Mobile ( a free government assisted program)
Budget Mobile = Verizon (a free government assisted program)
To conclude this section all these cellular services share a common bond the 4 main carriers some way or the other in the US