5G is the fifth generation of mobile communication technology, which has the advantages of higher speed, lower latency, and larger capacity than 4G, which can bring users a better network experience. With the gradual popularization of 5G networks, more and more users choose to buy 5G mobile phones to enjoy 5G services. So, if we already have a 5G phone, do we still need to change the 5G card? Can a 4G card be used on a 5G phone?
The answer is yes, a 4G card can be used normally on a 5G mobile phone. This is because 5G phones are backward compatible, that is, it supports not only 5G networks, but also low-level networks such as 4G, 3G, and 2G. Therefore, when we insert the 4G card into the 5G mobile phone, the mobile phone will automatically identify the type of card, and then connect to the corresponding network for calling, surfing the Internet and other operations. It's like when we plug a 3G card into a 4G phone, we can use the 3G network normally, but we can't use the 4G network.
The answer is possible, but conditionally. This is because the use of a 5G network depends not only on the type of phone and card, but also on the coverage of the network and the network. All three major carriers are now rolling out dedicated 5G**, which provides more data and higher speeds, but also charges higher fees. If we want to enjoy the benefits of 5G**, we need to replace our 5G card and then turn on 5G** to be able to use the 5G network on our 5G phone.
However, if we don't have high requirements for internet speed, we can also use 5G networks in the case of 4G**. This is because the three major operators have implemented the "three no policies", that is, no card change, no number, no registration, as long as our 5G mobile phone is set correctly, within the range of 5G network coverage, we can also access the 5G network. However, in this case, our internet speeds will be limited to a maximum of 300Mbps instead of 1Gbps or more for 5G**. Therefore, this method can only be used as a transition and cannot fully reflect the advantages of 5G networks.
To sum up, the 4G card can be used on 5G mobile phones, but it cannot fully enjoy the high-speed characteristics of the 5G network. If we want to use faster 5G speeds, we still need to replace the 5G card and activate 5G** before we can use the 5G network on our 5G phones. Of course, this also depends on our actual needs and economic conditions, as well as the coverage of 5G networks.