Check it out, MetroPCS is updating its network from CDMA to VoLTE (Voice over LTE). The reason, however, is more to compete with the bigger guys—not make it cheaper for the consumer.
The sooner MetroPCS can migrate voice to LTE the better. MetroPCS is much more strapped for spectrum than its bigger counterparts. Instead of using big unencumbered chunks of new 4G airwaves, Metro has resorted to shaving off slivers of its CDMA spectrum to use for LTE. Consequently, Metro’s current 4G service can’t match the big fat mobile broadband pipes Verizon and AT&T are offering in most places. Once it starts moving the lion’s share of voice traffic over to LTE, Metro can start shutting down portions of its CDMA network, using those frequencies to build bigger 4G pipes.
Read the full article at GigaOm.