Oppo Mobile — when i select other sim for internet without jio sim then i facing problems

Address:

Jaipur, Rajasthan

I am using oppo f3 handset... I am using his and vodafone sim... I am use internet in jio sim in slot1 but when i want to use sim 2 of vodafone... Then this phone not show the network in sim1.. And sim1 closes... So i want to solve this problem... So please solve this problem with that being the best thing for me... I want this one for me... So i can use the both sim together