If you find that your residence, automobile, or other personal effects have been entered/searched without your consent or direct knowledge, and everything "looks intact", consider that they didn't come to take something away, but to put something in.
Once your personal effects, especially high-capacity electronics like smartphones and laptops, are out of your direct control, in some other room for hours at a time while you're in a holding cell, you can no longer trust them.
If they can get access to the physical hardware, they can install malware, rootkits, key loggers, replace the network card with one that is known-trojaned, manipulate your certificates, trusts, replace firmware on your devices and anything else they want.
No, once you get your gear back, immediately wipe it. Do not log into it, not even once, and just sell it on eBay or Craigslist.
You can't trust it, so dump it as soon as you can.