How to break or come out of a function if no internet connection after 20 sec

[SteveMann]

@dkanday

is there something that I am missing?

Yes. The code.

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1. Arduino programming language The Arduino basically uses the industry-standard C++ language, implemented by the GNU g++ compiler. For information on basic things like loops, strings, functions, data types, and so on try consulting one of the many online C++ references. Hint: Google "C++ tutorial". The main sketch is C++, however the IDE does do a certain amount of pre-processing (in particular, generating function prototypes for you) before submitting the code to the main C++ compiler (see …

Since I can't see your code, I am only guessing, but why not simply test the status in the loop?

if ((!narrowband.begin(pinnumber) == NB_READY))