Hello,
For router to use B1+B8 carrier aggregation Mobile Network Provider (MNP) must not only support B1 (2100 MHz) and B8 (900 MHz) bands on themselves but also CA 1A-8A (B1+B8) carrier aggregation. For now at least officially only 4 MNP supports that:
- Drei Austria (Austria)
- Vodacom South Africa (South Africa)
- KT (South Korea)
- TrueMove H (Thailand)
For numerous other providers supporting B1 and B8, you might connect to one or another band separately, but you will not be able to use Carrier aggregation with both of those bands (B1+B8). So unless yours MNP is one of previously mentioned 4 we will not be able to help.
Best regards,
VidasKac.