In daily life using the home phone and the mobile phone for communication, which one do you think it may harmful to the human health?

 

 

 

 

 

 

Do you have home phone

 

 

 

 

What phone do you use when you take a long distance call? Home phone or Mobile phone

 

 

 

 

 

 

What type of the home phone do you have?

 

 

 

 

Do you think there is enough style of cordless phone selling in market?