What phone do you have? Well it's possible to be roaming if the manufacturer for some reason changed notifications. And you don't have to be abroad to be on roaming. If the carrier you are on piggybacks on another carrier's antenna in certain areas, you get a roaming signal.
Nah. Not just cheap phones. My work phone (Galaxy V) and the SIM2 on my S7 Edge shows roaming when I went back to the provinces. I called the network, and they said it shows up as roaming because in that particular area, they don't have cell towers. They (Sun Cellular) are piggybacking on the other network's (Smart Communications) towers, hence it would show up on the phone as roaming. That's how roaming does work anyway, except it's not abroad. So the OP may just be in an area where the towers his network carrier uses are just on piggyback.
