I've been in France 2 weeks using an international SIM card through TravelSIM. Although I recently got my monthly Koodo bill and it was upwards of $130.00. Turns out, I was somehow still roaming even though I was using a different SIM card. I quickly called up Koodo and they, after 1.5 hours on hold I'll add, told me it was due to my phone not being unlocked and if rectified this, it would solve the roaming issue. So I got the unlock code and successfully unlocked my Samsung S8 (SMG950W).
Problem is: it still operates in a roaming state. How do I fix this?