https://www.cnet.com/news/best-phones-for-holiday-gifts-2018/

2. What kind of carrier support your recipient needs -- a specific carrier, or are you buying the phone unlocked? If there's a problem, is your loved one comfortable reaching out for customer support or will you need to intervene? 

3. Your final budget -- are you also buying a case and other accessories, or just the phone itself? If you're also buying yourself a new phone in the process, you'll want to keep a sharp eye on deals like BOGO promotions (buy-one, get-one).