Arduino Micro Bluetooth - not working after Power off

hello,

i using , arduino micro this bt module.

the good:
when upload program arduino, connect phone via bt & send messages, open serial monitor(on pc) see message(s) length (also made led blink) - works perfectly!

the bad & ugly:
when power off arduino, plug in, nothing works.


here's small code sample displaying how data (via serial1) bt module:

code: [select]


if(serial1.available()){
    int strlen= 0;
    strlen= readstringfromserial();
    serial.write(strlen);
    }


if knows why happening and/or how may solved please

possibly caused code don't show.

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