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Are 4G industrial routers compatible with 3G and 2G network?

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    Welcome to IoT StackExchange, please read the doc on how to ask good questions on the platform found here: iot.stackexchange.com/help/how-to-ask At the moment your question needs some more detail to be understood – hardillb Aug 6 '18 at 8:27
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    Yes. 4G is backwards compatible to 3G, and 3G data is backward compatible to GPRS (2.5G, but it in unlikely that you will find 2G (GSM) anywhere; if you do, you would need a modem to transmit data, as GDSM had no digital transmission) – Mawg says reinstate Monica Aug 6 '18 at 9:32
  • Since you posted in the IoT section, we have to assume you are asking about 4G vs 3G/2.5G for data transmissions. As a general rule, the higher the 'G', the more speed you get. 4G is generally associated with the LTE standard, which in the right circumstances, can get you at least 1Gb/s. – JD Allen Aug 6 '18 at 14:56

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