My personal opinion is you have 14 days! I would say buy it and test it! if you think it's worth the money then keep it if not then just buy an iPhone 8. It's a lot of money to shell out so I understand, even if I had lots of money I would still think twice, thats why I'm taking advantage of the 14 day return policy, if I don't like it and I don't think it's worth it then its going back to Apple and I'm just keeping my iPhone 7 Plus!