13 hours ago
10 hours ago
I presume that you're referring to text messages to premium SMS 5xxxx numbers?
48 don't support the sending of such messages at all, even if you have additional cash credit on your account.
The only exception is texting "APN" to 50048 to configure your APN settings for mobile data access:
If you need to contact 48 support about this then see the links in my signature below.