From an article about an exorcist in DC; I find this interesting since some attackers have said their phones tell them to do it:
And then there was the young woman who reached out to him after an upside-down cross appeared “burned” into her shoulder. At the same time, her dad was receiving “snarky” text messages from demons. “The texts were a typical demonic rant: ‘She belongs to us,’ ” Rossetti said.
Rossetti said the messages appeared to come from the phone number of the woman. Upon careful investigation, however, Rossetti insisted there was no evidence of her having sent the messages.
“By the way, several exorcists have had the same experience, getting texts from demons, and why not?” Rossetti said. “In the past they messed with electronics — TVs and lights turning off and on by themselves. Now they mess with cellphones.”
https://nypost.com/2021/07/03/dark-stories-of-catholic-priest-who-performs-20-exorcisms-a-week/
You just made me repeat the St Michael prayer.