Hi everyone I recenlty bought a Panasonic telephone in the US for my home. On the power adapter it says : input: 120v~ 60hz 100mA i wonder if i can use it in my country, the power here is 220v if not, what can i do to get it working?

You will have to get a transformer (sometimes called a converter) to change the 220 to 120. Do you have 50 or 60 hz  power. I do not know if that will make a difference. I don't think so. Contact a dealer for Panasonic.. It may be easy to just get a 220v supply for the phone.