Щ????

1973???40????1G?5G??????????д????????????

1G??绰?

1G??????1G??????????????绰??????????绰???

2G???в??

2G?λ??????似???9Kbps??32Kbps?????????????????????????顣

2G????в???????籨???????????

3G???

3G???????y???绰顢??3G??????????????QQ???绰??????????????

4G????

?????硣4G???????4G????100Mbps????á4G?+Wi-Fi+4G硱?????????е?????

δ4G?????????????????????4G???4G??????????????????δ60%???

5G?δ????

??????з??????1Gbps??5G????????????δ5G???10Gbpsζ???1?????

5G????????жп?