You'll need to post a bit more information than that if you want assistance from the Community Forum.
Is your phone capable of 5G connectivity?
What make and model is is?
Did you ever have 5G connectivity?
If so then when did it stop and what changed in the meantime?
Are you getting 4G connectivity?
Are your APN settings configured correctly?
Do you have an active €12.99 membership plan?
Are incoming/outgoing calls and texts working ok for you?
If you need to contact 48 support about this then see the links in my signature below.
