Unverified80% confidenceTradeoffTime unknown
GSM蜂窝网络方案(插卡直拨)覆盖范围广、断网可用，但需持续缴纳月租且信号弱区域无效；WiFi/蓝牙方案零月租但仅限室内，二者难以兼得低成本与广覆盖
1
Sources
80%
Confidence
Medium-term (~90 days)
Relevance
-
First Seen
Sources
Related Entities
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