My iPhone 6s Plus has been going back & forth from 4G to 3G & 1x, which started after updating to iOS 12. My Husband was in the car with his iPhone & I was there with mine, mine lost signal his did not! I’ve done ALL the ‘troubleshooting ‘ interventions & nothing’s working😟 Anyone else having the same problems??
Service you can rely on is always a big deal. We want to make sure you get the great connection you need to fully enjoy our service. I'm glad to help. How often are you seeing the service fluctuate between these different signals? What are the zip code and nearest cross streets to where this is happening?