https://phys.org/news/2019-01-legal-implications-digital-privacy.html

The origin of the case were several armed robberies of stores in the Detroit area in 2010. Timothy Carpenter was accused of planning the robberies, furnish weapons and operate as an external lookout.

In the case against Mr. Carpenter, the prosecutors used the records of cellphone towers – CSLI – that showed that his phone had been near the stores by the time of the robberies. The cellphone companies had provided 127 days' worth of location data from cellphone towers.