Hey everyone! Hope all is well. So this has been going on with both iPhones I've had listed in the title. It's been going on all throughout iOS 10. Last night, I went and visited my dad. Verizon delivers a very weak signal inside his home. LTE is unusable in most areas of his home. Could barely send a text. Switched to 3G and had an awesome signal.... was shocked! Anyway, I left and went back into an area with a great LTE signal but the iPhone remained on 3G. This has happened to both iPhones I've had and I don't believe it's a software issue because I started from scratch on my iPhone 7+ to see if it was a software problem. So I'm wondering if any of you have this same issue, maybe with other carriers (even HSPA+ to LTE). Thanks!