Any device that affects the biological processes in the brain would be a device to stay away from as much as possible. The high-frequency electromagnetic fields emitted by cell phones do just that, and people continue to use them every day because they are uninformed of the dangers. When the effects of the electromagnetic fields can be measured through studies and are shown as the direct use can increase in blood pressure, that is the time for additional studies to be granted so that professionals are able to pinpoint the damage caused by a larger culprit which would be cell phone towers.