Suggest Treatment For Skin Burn From Cell Phone

hi, Well i am 23 years old and i use cell phone alot but i never faced any problem. Only past 3 weeks whenever my mobile phone i bring near to my upper thigh or stomach like put in laps or somewhere close to my body it starts giving me a burning heating sort of irritation as if my skin burning only from that specific area where phone is placed I am really confused what could be the reason am i having some disease or what should i do?. Kindly help me am i being prone to some disease is it my phone overheating or something wrong with my body should i give up using mobile. .wat should i do please help me