设备老旧，不支持升级到5G，且最近没采该频段的新设备。 B8：2x15MHz，4G补充覆盖频段，2G主力频段。这是此次申请重耕的重头戏。目前4G用了2x10MHz ...

3G networks succeed 2G ones ... The high data transfer rates make 4G networks suitable for use in USB wireless modems for laptops and even home internet access. 5G is the fifth generation of ...

Who is still using, or trying to use, 2G and 3G networks, why do they have to be turned off in the first place, and what if any alternatives are there when no 4G or 5G coverage is available?

3G networks succeed 2G ones ... The high data transfer rates make 4G networks suitable for use in USB wireless modems for laptops and even home internet access. 5G is the fifth generation of ...

Mobile, and AT&T comes down to your priorities – whether it’s price, perks, speed, or coverage. Each carrier brings its own ...