bukhory , via OnePlus 6 , Feb 27, 2020 : I live in Qatar, had 2 sim card from Ooredoo, both I used in 1 phone using OnePlus 6. 1 sim card is working well, can make call and received a call the 2nd sim is only can have data. I can't have voice call. I had switched to sim 1 and viseversa. I only had messaged that my voice services is temporary turn off. but, I had take the sim and tried on other device (snote 9). the sim card is working well. the conclusion is the sim is not working only on my op6. with op O2_Beta_34. I had call operators, that said their service is work properly. what should I do..?