Hi Ptillisch,
Thanks so much for your response, I actually soldered 4 wires on the RJ11 contacts (reversed side), mirroring the RJ11 , and No I did not use any 4.7K pull-up resistor on the I2C , I will try that and let you know , hoping that the nano has not pulled up more that 0.8A recommended for each I/O pins
Thanks for that