Whilst looking at the specs on the new iPhone’s it really struck me how the default payment now seems to be ‘get a finance plan’. The default option or the first presented on all of the screens with buy buttons is pay monthly. Personally I wouldn’t recommend using a payment plan on an iPhone, especially when you’re already paying monthly for your phone contract.
In 2020 we have so much uncertainty and if your finances change you’ll be stuck with a phone you may not be able to keep.
Save a bit on the side for a few months if you are thinking about the plan or sell some old tech you aren’t using (that’s what I’m doing) and wait a bit, that way you’ll also see reviews and be able to take a step back from the hype and make a more rational choice.