Question about LogiLink Cleaning set

Well, I guess it's just a question of whether the spray can be used. I don't have the latest iPhone, but with the 6s without protective glass it works without problems. Probably the newer iPhones have a more resistant surface than the new one. Basically, I would attach a protective glass to give the iPhone additional protection. You can also test other cleaning agents on it. If it doesn't work, only the protective glass is affected.