Xperia Z5 Dual Mobile data problem 2 card Polish and German

[Vaio-T]

Hello,
I hale problem to Connect mobile data when I put second card to Phone. All settings Look fine, but didn't works.
1sim Polish -P4 Play (call, data, SMS)
2sim German - Lyca (used ony for calling)
Any idea?

[MarlonUk1]

can you contact your network provider for the right apn settings?

try to change your network type

settings>more>mobile network>netork type