Default (solved)problem with my data network

I was using stock ROM and I was using data network normally . I changed my sim card type and didn't try data network with the new sim
And I changed baseband and my kernel to anc2 after I returned to previous sim it said me change traffic plan and I said yes . but I can't use data network now. And I flashed omni rom and data network didn't work too any idea how to solve this problem note. I returned to previous baseband and it didn't work too mine was ana2
(solved) the problem was with my sim card
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