how to check how much radiation a phone produces? do the phones give any measure of radiation they produce? how can we know?

because i am thinking fo buying a cheap smart phone and am not sure if it emit lot of radiation. ANSWER TO THE ABOVE QUESTION -It is really very important to check the level of radiation of your phone because radiation poses risks to the user especially if the phone are used on a regular basis. There are 2 ways to determine the radiation of your specific mobile phone. 1. You can