Open the phone settings, click Dual Card and Mobile Network, enter Dual Card and Mobile Network, click Advanced Settings, enter Advanced Settings, find the 5G network type, and see if it is sa or nsa.
There are three main differences between NSA and SA:
1, NSA does not have a 5G core network, and SA has a 5G core network, which is the key difference.
2. Under the NSA networking, 5G and 4G are interconnected at the access network level, and the interconnection is complex; Under the SA networking, the 5G network is independent of the 4G network, and the 5G and 4G only communicate at the core network level, so the interconnection is simple.
3. Under the NSA networking, the terminal is connected with two wireless access technologies, LTE and NR. Under SA networking, the terminal only connects NR, a wireless access technology.
The meaning of NSA and SA
5G has two networking modes, one is non-independent networking (NSA) and the other is independent networking (SA). NSA refers to the joint networking of 5G and 4GLTE, that is to say, on the basis of existing 4G equipment, the 5G network is carried out.
NSA refers to the joint networking of 5G and 4GLTE, which means deploying 5G networks based on existing 4G equipment. In the 5GNSA networking mode, operators can use the core networks of 4G and 5G*** to save network investment, but the disadvantage is that they cannot support the new core features of 5G, such as low latency.
Moreover, the mobile phone needs to connect to both 4G and 5G networks under the NSA network, and the power consumption is higher than that under the SA network. In order to save money, some operators will adopt NSA in the initial stage of 5G network construction, so many netizens ridicule NSA as "fake 5G".
The purpose of NSA is to enable consumers to use 5G devices faster. At this stage, whether it is the speed of base station construction, the maturity of mobile phones, the continuity of signal coverage and positioning, or considering the needs of international roaming and using 5G services without changing cards and numbers, it is an objective choice for operators and industries to deploy NSA first.
At the same time, users can't experience the low delay caused by SA, and the uplink bandwidth of NSA is much lower than that of SA. Many performance defects of NSA will hinder the development of new services, such as intelligent manufacturing, 5G medical emergency, VR live broadcast and other services that are very sensitive to uplink bandwidth and delay.