C2684 The Door of the Phone

3G technology, that's for phone users, So, if there was only a 3G mobile network, no 3G phone, What use would that be? Of course, the 3G network was a 2G downward compatibility network. In the past, smartphones could also be used, but if they were only used to send text messages... No matter how fast he was, there was no need.

"There are still not enough domestic manufacturers