Even a regular mobile connection 4G-5G can feel spotty with connections/disconnections dropping for a few seconds. I spend some time every summer in rural Haliburton Highlands/North Hastings (middle Ontario), cellular reception is hit and miss, one bar maybe two, voice calls, when successful, sound awful and text messages frequently stay unsent (or send multiple times inexplicably). Unless you can afford starlink, or drive into the next town and hit the library wifi, you're out-of-luck. As you're driving cell service will drop depending on elevation. A quick check of facebook messenger and maybe loading a webpage for information. Forget a fancy app.