Apple Watch SE can’t connect to cellular data

[CPTG2504]

Hi, I’ve bought  an Apple Watch SE for my son to use. It’s been paired with my phone through as a family watch and is linked to my own o2 account. However, when I try and set up cellular data on pairing it says the o2 account on my iPhone cannot be used to add a cellular plan to the Apple Watch. I bought the watch with a plan (linked to my o2 account) so I don’t know why it’s not letting me. Can anyone help? I have an iPhone 12, unlimited data, pay monthly account. Thanks 

[gmarkj]

Sarah no longer works on the community. None of the previous customer advisors is still here @Vic02 .

Unfortunately that means you are left with persisting with customer services.

Contact customer services by calling 202 or 0344 809 202.

Best time to call is 8am UK time.

Alternatively you can call 0800 902 0217 using Skype for free.

Guide here Guide: A Guide to Skype

Or you can message O2 on social media on Instagram https://o2uk.co/O2CIG), Facebook ( https://o2uk.co/O2CFB) , Twitter ( https://o2uk.co/O2CTW).