Carrier aggregation, VoLTE, VoWifi not working on Vodafone Idea?

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Getting mind boggling speeds on Vodafone with band1 and band3 2CA in Kota,Rajasthan.
All the basic broadband plans are useless here they give only 30 or 40 mbps.
Rs 16 1Gb for 1 day was the pack on which I got those speeds.
Note-iPhone 8 with Qualcomm modem.
 
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Idea has a different volte operator code than Vodafone after integration they assign Vodafone volte operator code to idea so the volte doesn’t work. For Vi they use Vodafone volte operator code so go to the VI store and do a sim swap. I am sure then it will work for you. If you use mediatek phones then tell me I know a way to get VoLTE in idea without the need of sim swap.
ya bro i have same i use media tech processor p70 my phone is f11 pro.. i also replace my sim Idea sim to vi sim .but it doesn't get volte.
 
I ported to Vi from Jio as Jio failed to improve network since last 1.5 years.
I got Vi branded sim which I ordered online (Prepaid) with 647 recharge and carry on weekend offer.
I activated this morning and Volte was not working. My other Vi sim volte was working.
New Sim shows VIL as your Network.
I went to Vi store at Andheri East Station (Near Jumbo Xerox) and they activated something and in 2 hours & restart Volte is working fine.

It seems something related to Idea / Vi merger and backend issue.
After Volte is enabled, voice is crystal clear.
 
@popcorn Same issue on my Vodafone sim which I ported from Jio to Vi. They did not have newer sims so gave me 2019 Vodafone prepaid sims. It shows Vodafone as network name on this sim btw. VoLTE did not work out of the box. I had to call their CC to activate it which they activated after 2 days.
Things like VoLTE should be auto activated and it's no-brainer. Management still in medieval ages. This exact issue is faced even by new Airtel port-ins. However, I am pleased with 4G speed and network performance of Vi. I get 20 Mbps during day and 70 Mbps from midnight night till 8am in the morning on my OnePlus 8.

You really need latest mid-high end phone to latch on to band combination which Vi is using. Insert the sim in 2 yr old phone and speeds go for a toss.
 
I hope they enable CA at my location as soon as possible. Band41 is absolutely fantastic at night and during daytime but absolutely tanks at peak times dropping as low as 0.5-1mbit. On airtel in 1+3 config, I atleast get 40mbit throughout the day.
 
Their policy is simple.
Keep Volte disabled by default.
Users who are smart will complain and they would activate it.
 
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