Primary carrier and secondary carrier in cdma?

Answer:
The two big CDMA carriers in the US are Verizon in first, followed by Sprint.

NOTE: CDMA networks are only used in US, China, Japan, India, and few other Asian countries.
First answer by Theanserguy. Last edit by Theanserguy. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].