I’m running HA in my summer house and have only mobile data there. How much data is consumed by HA in “idle”? I’m sending updates of temperature and door sensors to CloudMQTT so I don’t need to view the frontend, saving some data. Not using any other cloud services.
And can I minimize the data consumption?
It all depends on the components you have enabled. With only CloudMQTT I don’t imagine you’ll really even notice the usage. Home Assistant Core itself won’t result in any internet usage.
I have some components enabled but only local ones, except from Duckdns, but can’t imagine that using to much data either?
Might Telegram bot use some data since it’s polling?
Yes, telegram will maintain a persistent connection but again, I don’t think you’ll hardly notice.
Be aware that a “stock” install has some components enabled that will go out to the internet for updates. The weather component is a good example.
For Hass.io there are also frequent checks for Hass.io supervisor updates, Home Assistant updates and any addon updates.
These could all easily be blocked or disabled if they amount to traffic quantities that cause an issue.
Test the frequency of the temp sensor (and any sensor for that matter ) updates. Some poll frequently and could really make a lot of traffic.
To minimize data usage you could set them to only update MQTT topic at a set frequency via an automation rather than publishing all updates.
How would I or someone else be able to easily stop has.io or any other integration to check for updates or use any unwanted data over my 4g limited prepaid plan simcard? I have an mqtt bridge that sends 2 or 3 small messages per hour and I don’t believe that can explain 5 to 6MB data usage per day on my prepaid plan. I expect and strive for a few kilobytes instead of megabytes data usage per day.