My friends and I were in a restaurant in a downtown area and my iPhone XS was the only phone that had difficulty loading any websites or internet-based apps such as Instagram. First, I disabled and reenabled Cellular network. Then, I turned my phone off and back on and it did not resolve the problem. Is this a problem with my phone or service? I have a Verizon postpaid plan. My friends had IPhone X and IPhone 7 with ATT and Verizon with no problems. I factory reset the phone a couple days ago due to same problem.