A. 2G 3G 4G鏁版嵁缃戠粶锛屽摢涓鐪佹祦閲忎竴镣癸纻
浣犳墦寮涓涓涓滆タ锛岀敤镄勬祦閲忔槸涓镙风殑锛岃窡2g銆3g銆4g娌℃湁鍏崇郴锛涘氨𨱍充綘镓揿紑锲剧墖鏄3M锛岀敤闾ｄ釜镓揿紑閮芥槸4m锛屾湁镞跺2g镓扑笉寮闇瑕佸埛鏂板彲鑳芥洿璐规祦閲忥纴涓嶈繃缃戦熷揩镄勬椂鍊椤伔璺戞祦閲忚窇镄勫揩锛屾瘆濡备綘镓揿紑缃戦〉鍙戠幇镣归敊浜嗭纴杩欐槸杩斿洖瀵4g宸茬粡娌℃湁鐢锛屼絾2g杩樻病镓揿紑杩斿洖鍙浠ヨ妭鐪佹祦閲忥纴浣呜繖绉崭簨𨱍呭緢灏戝彂鐢熴傚彟澶栫渷娴侀噺鍙浠ュ湪娴忚埚櫒閲岄溃璁剧疆鍏抽棴锲剧墖锷熻兘锛屽彧镓揿紑鏂囧瓧锛屽氨鑺傜渷浜嗐
B. 钖璇3G姣4G鐪佹祦閲忥纴杩欐槸鐪熺殑钖楋纻
鏄镄勶纴3g鎱㈡墍浠ユ祦閲忓氨鐢ㄧ殑鐪侊纴4g蹇锛屾祦閲忚垂镄勭壒鍒蹇