Don’t take your cell phone along when yer gonna do illegal shit. (Especially when said illegal shit is out in the boodocks where it is easier to check cell phones that ping towers that are likely pretty far apart)
Note the key part: “According to the criminal complaint, the two men were identified as possible suspects through the analysis of cellphone records”
The rest was analysis of videos and just plain good police work. (which the FBI excels at when not playing politics)
Just a thought: Leave the cell phone at home. If you use a burner phone for communications with your fellow conspiracists, make sure it is NEVER co-located with your main phone. Don’t buy that burner when you have your main phone with you. Never call ANYONE but the other folks (on their burner phones) in the group from that burner phone, and make sure they do the same. If anyone calls any other phone (sister, wife girlfriend, brother, work, parents etc) then the Feebs can track you through that one contact and you are screwed. If the main phone and the burner are co-located (say at your house or a friends house, or work or even a parking lot or in a moving car) while powered on, you give ’em a link to investigate. Again, the FBI are good (when not trying to influence elections) at investigating. Don’t give ’em a clue to build on…
I’m betting that these guys just had their phones with them when they went to the substations. 4 locations and their personal phones pinged towers near each substation at the times when the damage took place. Bingo. Suspects.
Betcha they weren’t the “White Supremacist Militia Domestic Terrorists” the media blamed the attacks on, either.
ETA: Seems that cell phone location data is also a key part of the Iowa murders investigation as well