Do I need to unlock my phone before activating my SIM?

Your phone must be unlocked to use olilo. Since December 2021, UK networks haven’t been allowed to sell locked phones, so newer handsets are usually fine.

To check: install your Olilo eSIM. If it connects, you’re unlocked. If you see SIM not supported or a request for a network unlock code, the phone is locked to its original network, and they’re the ones who can unlock it.