Does this help at all - the bit under Returned Home?
https://community.48.ie/t5/The-Knowledgebase/The-Roaming-Troubleshooting-Guide/ta-p/52179
I'm not a 48 employee either, but I know from the emails that there was an ongoing issue with some Huawei handsets. I had to struggle to get some help from the 48 crew. After spending hours on emails and chat, they couldnt really do anything. Such hopeless folks!
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