I've only had it a day, and I haven't even swapped my SIM yet (waiting for my case to be delivered), so I'll give it a couple weeks to really get a feel for things. I'm going on a road trip soon, and may be going out of the country, so if I'm going to run into issues, it's going to be soon. I'm also going to try using the eSIM to trial Google Fi (international data FTW, free for 7 days), so it should be a rather complete experience.