Bring Your Own Phone Service

B.Y.O.P. = Bring Your Own Phone and Used Open Sim Cards for Service like AT&T, T-Mobile, Verizon Wireless.

 #1 to #25 = AT&T,   #26 to #50 = Cricket,  #51 to #100 = H2o Wireless 

 #201 to #220 = T-Mobile,  #221 to #240 = Simple Mobile,  #241 to #260 = Ultra Mobile, #261 to #300 = Lyca Mobile,

 #401 to #420 = Verizon  #421 to #440 = Simple Mobile CDMA,  #441 to #480 = Tracfone CDMA