1G是20世紀80年代引入的模擬電信標準,直到它被2G數字電信取代。

1G shì 20 shìjì 80 niándài yǐnrù de mónǐ diànxìn biāozhǔn, zhídào tā bèi 2G shùzì diànxìn qǔdài.

1G is an analog telecommunications standard introduced in the 1980s until it was replaced by 2G digital telecommunications.