I've been with Fonus for a couple of years now, and it's been mostly smooth sailing. Roaming charges are a thing of the past, and I get 5G almost everywhere I go. I’ve tried it out across Europe, North America, and some parts of Asia without a hitch. Customer support is also pretty quick to respond via chat, which is great. However, I have noticed that sometimes it takes a while to connect to local networks. A quick SIM reboot usually does the trick, but it can be annoying. Also, there was a hiccup with new SIM cards they sent out six months back, but that’s all sorted now. My recent trips to Spain and Dublin went without a glitch.