Same here in my JMR540, Vi is not working but Airtel is working perfectly. Because of jiofi support these band Band 3/5/40 i.e. 1800/850/2300. And none of them is used by Vi so not getting connected. Try calling Vi to fix it using pretext that Vi is sim not working in Dongle (say other sim like jio Airtel is working) . Dont tell them it's jiofi. Tell them dongle is of huawei.