With an upgrade it should be carried over. You need to check in My O2
If it's not there, then you will have to apply again
Veritas Numquam Perit
It won't carry over automatically.
You'll need to apply again.
Certain new phones are excluded from o2 open ... beware 🙂
Mine expired after 2 years after I paid my phone off but I would have needed to reapply if I was to take out a new handset / contract
That has always been the situation
Some new phones are not available for O2 Open for the first few months
Any time you change tariff or upgrade you need to reapply for the discount