Hi @bko, could have a problem using wifi shared from my cellphone? Since I typed exactly the same code and it does not work. The same thing happen using code from tutorial TCPClient atDocs Spark(Does nothing). is there something I need to keep in mind changing your code?(i.e. maybe something in code changes from countries? IDK) Thanks as always! 
There was some funny thing that some people ran into where they needed an extra newline in an HTTP request or extra time after the request when using their phone’s hotspot. I have never tried my phone as a hotspot (cost is high with my plan) so I really can’t say.
Try searching around the forum here for phone hotspot problems and see if someone else has good ideas for you.
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