The use of the ESP8266 in the world of IoT

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By dvdood
#82883 I'm new to microprocessors. Recently bought nodemcu v3 esp8266.
Tried this simple tutorial .
It worked fine, but i have an issue when i'm not using same wifi. Let's say that i want to open url using mobile data 4g. It does not open, only using wifi with phone. Any ideas what to do?