What make and model of phone are you using?
Are you sure that it's not a handset from abroad that maybe doesn't support the Irish 4G frequencies?
Or could it be configured to avoid using Irish 4G frequencies?
Can you try your SIM in another phone?
While you're here, check out our "Featured Topics" below.
Our Troubleshooting Guide and Knowledgebase contain help and support articles and popular questions to help you as a 48 customer.