Maybe offering/recommending a 3G shield could do the trick. Or even a LoRa shield, for instance. A think 4G shield is overkill (as this: https://www.cooking-hacks.com/4g-gps-3g-gprs-gsm-gps-lte-wcdma-hspa-shield-for-arduino) Have you thought about this? Thanks.
Maybe offering/recommending a 3G shield could do the trick. Or even a LoRa shield, for instance. A think 4G shield is overkill (as this: https://www.cooking-hacks.com/4g-gps-3g-gprs-gsm-gps-lte-wcdma-hspa-shield-for-arduino)
Have you thought about this?
Thanks.