Tips for safer mobile phone use

Here, according to the article Risk of Brain Tumors From Wireless Phone Use in the Journal of Computer Assisted Tomography by Rash Bihari Dubey et al, are some steps you can take to reduce exposure to electromagnetic energy from mobile - or cell - phones:

Limit the use of cell phones to essential calls and keep calls short.
Children should use a cell phone in cases of emergency only. Because of their developing skulls, the radiation can penetrate much more deeply.
Wear an air tube headset (not regular wired headset). The regular wired headset has been found to intensify radiation into the ear canal.
Do not put the cell phone in a pocket or a belt while in use or while it is on. The body tissue in the lower body area has good conductivity and absorbs radiation more quickly than the head.
If using the phone without a headset, wait for the call to connect before placing the phone next to the ear.
Do not use the cell phone in enclosed metal spaces such as vehicles or elevators, where devices may use more power to establish connection.
Do not make a call when the signal strength is 1 bar or less, which means the phone must work harder to establish a connection.
Purchase a phone with a low SAR. Most phones have a SAR level listed in its instruction manual. The SAR level is a way of measuring the quantity of RF energy that is absorbed by the body. (More on SAR)
Use a scientifically validated EMF protection device. There are advanced technologies available nowadays that strengthen the bioenergy field and immune system against the effects of EMF.
Use text instead of talk.
Use landlines.
Keep cell phone off most of the time. Let people leave messages and then call them back from a landline.
Limit the use of cell phones in rural areas.