1xRTT is short for single carrier (1x) radio transmission technology, a 3G wireless technology based on the CDMA platform. It is a new Data transfer technology that can give speeds of up to 86kb's per second. This service is unique because instead of being billed by the time spent online, you're actually billed for the amount of data you transfer through the network. This improvement for wireless data is similar to going from dial-up to highspeed service. When data is not being actively transferred, the 1x Data service becomes dormant and a virtual connection to the network is maintained. This , allows you to still receive voice calls or text messages on your cellphone. When you are ready to resume the data session, you can re-engage the network connections immediately.

Not only will 1x improve data transfer, it also allows for more user network capacity and longer battery life. All of Bell Mobility's current phones support the 1x network.

1xRTT is also referred to as CDMA2000.