If you are using the Reliance Jio SIM try removing the SIM and insert other SIM (Airtel, Vodafone etc) from other service providers and see if you can access 4G. Some users are facing issues – they are not able to access 4G from other service providers after using Jio.
Since I review a lot of devices and I do use the Jio SIM to check for VoLTE. I did not find any such issues, in fact I was able to use 4G from other service providers after using Jio SIM with 4G / VoLTE on the same SIM slot.
It could just be an isolated issue with few users, probably their handset, but in case you are also facing the same issue let us know. All you need to do, if you are using Reliance Jio is to remove the Jio SIM and replace it with other 4G enabled SIM from Vodafone, Idea, Airtel etc and see if you can access 4G.
Give the handset some time, you may get 3G icon and for 4G icon to show up it will take few minutes.
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