Thank you for your question, my name is ***** ***** I look forward to assisting you.
Please note, click on Reply to Expert to reply to me, a rating is only needed when we are finished.
This is usually an issue with the Firmware, so I would first like you to do this please.
Hold the power button on the Vivo to off for 60 seconds.
Release, then turn on the Vivo and tell me if it now connects please.
Let me know the results please