Maker Pro
Maker Pro

Want to send data over 3g Sim

Not a electronic engineer so please bear with me.

I have a small board that gets some data. I want to send it back to my server (making a HTTP request) over the 3g (or 4g) network. I am based in the UK and was wondering what is the cheapest off-the-shelf board I could use to send data infrequently (1kb every 5 mins). Is it possible, for a prototype, just to send/receive data to a 3g (or 4g) modem to/from UART?

Not using Arduino or raspberry pi - my board has a STM32 ARM MCU and I program it using
the STM cube IDE.

I am a rookie. I don't know if there is anything special I need to do to actually be able to send/receive HTTP requests. I suppose I need to get a sim from an operator with a data plan, but apart from that, do I need to handle any sim/network setup?

Thanks
 
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