Well, I don't know... I have GPS navigation on my smartphone, and I use it all the time. True, my smartphone is only for the internet and navigation, and I picked a special tariff for it. Previously, everything was in one device. This situation often happened: you're driving by the navigator in a foreign city, then an incoming call comes in — and the navigation minimizes. You have to turn on the hazard lights and pull over. So either a separate navigator, or a smartphone, but not one that receives calls. By the way, what kind of device is this — MTS 236? A phone for 200 hryvnias? I thought there weren't any below 300. I should get one for my grandpa, because calling his village is a real problem.