Default Unable to make calls when data is on

Hey guy's this is my first time buying a dual sim phone soo don't have any idea about it...

Soo the problem that is arising is that when i enable data on sim 1 i can't receive calls on sim 2... But when i disable mobile data on sim 1 and 2 i can receive calls on both the sims... Same thing happens when i enable data on sim 2 .. I can receive calls on sim 2 but not on sim one....

Dual sim settings set to "voice" my dad is yelling at me saying why can't you fix it 😈😤😣😡😡😡😬😠

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