When you meet with your colleagues in Meatspace, leave the cell phones home. Bonus points for sending your “suspect” ally on a fool’s errand with all your cell phones (on and muted) to a useless, benign location while the grownups talk amongst themselves. Extra bonus points if you can spare a trusted ally and send him or her to a useless location with all your cell phones on and loud. Then have that person send texts as folks normally do intermittently from each of your phones.
Giving those spying on you NO valuable information is OK (cell phones off at certain times and certain places out of character raises suspicion, however.) Giving those spying on you WRONG information is extra good.