Did it ever work?
If not then you probably need to configure your APN settings.
Send a text (content doesn't matter) to 50048 and follow the instructions:
If it did work before then...
Do calls and texts work?
Do you have an active membership plan with a non-zero data allowance balance?
If you need to contact 48 support about this then see the link in my signature below or email them at support@48months.zendesk.com
