I have been using a smartphone for over two months. IN the past I used a simple flip phone. I am 65 year old woman in fair/good health except for Hashimotos sarcoidosis, mild hypertension, sarcoidosis of lymph glands in remission for 7 years. Since using the phone, I have noticed my blood pressure rising at night. I notice at times the phone is hot to my ear. Can this radiation generated heat cause a rise in blood pressure?
Hi. Mobile phone use is not known to cause an increase in BP. Please visit your physician and explain this to him for adequate Chat Doctor.  Hope it helps. Take care.