Currently iPhone 6. I switch back to android periodically, but my last two phones have been iPhones and I couldn’t be happier. Never had any serious or lasting issues, but when my sister’s or girlfriend’s iPhones have had issues, I took them to the Apple Store and they got new ones for free after a quick genius bar appointment if it couldn’t be repaired (once was actually something that was our fault, but they gave her a new phone anyway). They make it easy to get issues dealt with in person and will actually try their best to help you out. Best of all, pretty much any company that makes cases and accessories makes iPhone compatible sizes/versions.