✔ 最佳答案
Answer given above is completely wrong.
Waves emitted from mobile phones are not infrared radiation. They are electromagnetic waves with frequencies much lower than infrared. The common frquencies used in mobile phone communication in Hong Kong in the GSM network are 900 MHz and 1800 MHz, and 2100 MHz for the 3G communication network.
On the other hand, frequencies of infrared radiation ranges from 4.3x10^10 MHz (near infrared) to 3x10^5 MHz (far infrared).