I want to measure various environmental data (temperature, humidity etc.) on farmland.
To transfer the data, I'd like to use a cellular connection. There are devices for this out there like the Arduino MKR, Ikarus Boards or others that use either the nRF9160 or some u-Blox board. I tried using these devices but i always ran into various errors like an unresponsive sim module, the mcu cannot be programmed anymore or that no deep sleep was available. So what I need is a device that can reliably send data over a cellular connection.
My thought was, that we already have such devices. Phones obviously! Only downside there is, i don't know a single phone that can read data from a sensor. Maybe with an additional Arduino and the USB connection this could be possible though.
The phone would also need to power itself down and up again in regular intervalls to transmit the data. Does there any phone/device come to your mind that would suit my needs?
Something like the Arduino MKR, but created by a company that acually knows how to build phones or cellular products. I need more reliability than what the maker models offer.
