If people tell you it's all in your head, or that non-ionizing radiation is not harmful, this document could be useful.
This is a survey of 48 trees with excellent pictures, showing clear damage from mobile phone base stations.
Trees in Bamberg and Hallstadt in the radiation field of 65 mobile phone base stationshttp://kompetenzinitiative.net/KIT/wp-content/uploads/2016/09/Trees-in-Bamberg-and-Hallstadt-Documentation-2006-2016.pdf