I love my iPhone 6 but it's 3 years old & keeps turning itself off -even if it's charged. If this happens the only way to get it to turn back on is to plug it in- so I practically have a land-line again🙈 So my aibu is if I would be unreasonable to get an iPhone 8 64 gb even though it's the same price as an iPhone 7 256gb? Any advice greatly welcomed!!