Upgrade with no payment

[OGSTABLES]

Is it possible to upgrade my current device, without paying the device off. I have an iPhone XS Max, it has seen better days. I am currently suffering with network issues. So calls always seem to cut out, or not come through. My device plan runs out in summer 2022!! 

I have been with O2 for ages, so would be a shame to leave them. But with the signal bad and my device being slow, I am wondering if there is an option. 

[MI5 · Accepted solution]

@OGSTABLES 

Device plan must be paid off first.

You can always sell your phone to raise the cash to do so.

Guide: How does O2 Refresh work? 

[OGSTABLES]

That's annoying, my device wouldn't fetch much money as the screen is cracked. 

[MI5]

@OGSTABLES 

As it's an iPhone you may be surprised.

eBay is a good place to sell a damaged device or try your local CEX.