4G to 5G

[speechless]

My new mobile phone is 5G enabled but my BT SIM card is 8 years old and I’m on a 4G plan

How can I change to a 5G plan and will I need a new SIM card?

[NigelB72]

You'll need to call BT Mobile and request a 5G SIM and account. 

[West]

My understanding is that 5G is the network platform and the sim should not matter.

I have what could be called a 4G sim and when I enter a 5G area it works just fine.

[Les-Gibson]

You might find this link helpful; Do I need a new SIM card for 5G?

[NigelB72]

@West a lot of older Sims aren't compatible with 5G 

[speechless · Accepted solution]

In case it helps anybody else, I can confirm that because my existing SIM is 8 years old, I did need a new SIM card.  Thanks to everybody for their help.

[DavidM]

Thanks for letting us know @speechless .

Cheers

David