On the basis of full netcom 2.0, full netcom 3.0 introduced carrier aggregation's new technology, and realized carrier multiplexing in three frequency bands, which accelerated the network speed from the original theoretical 150Mb/s to 300Mb/s at the earliest. Mainly for smart phones that support dual card dual standby and use dual cards. If the mobile phone only uses a SIM card, in fact, all Netcom 3.0 and 2.0 are basically the same as the first generation 1.0.

Simply put, Netcom 3.0 is a network that supports Unicom from 2G to 3G as a secondary card on the basis of 2.0. For example, mobile cards can be used with Unicom cards and telecom cards at will. Any card can choose 4G network, and the other card is 2G network. However, if Unicom card is used as a secondary card, it can support 3G network at most, that is, the upgrade of Netcom 3.0.

The difference between full netcom 3.0 and 2.0:

1, full netcom 1.0 smart phone, telecom 4G card can only be the main card, and the auxiliary card cannot support 4G network;

2. The whole Netcom 2.0 smartphone is not limited to the primary and secondary cards. When the Unicom card is a card, only the 2G network can be used;

3. All Netcom 3.0 does not distinguish between master card and slave card. When Unicom card is a slave card, 3G network can be used. In areas with poor GSM network, 3G network can be used to improve the quality of voice calls.

Simply put, the core difference between Netcom 3.0 and 2.0 lies in the network standard that Unicom can support when it is used as a secondary card. The former is used to connect 3G/2G, while the latter only supports Unicom's 2G network.