Hello guys, Sorry if this is in wrong section. One of my friend using Jio 4G sim in 3G handset but he wouldn't told how he did? I tried various guide and also watched and did as some videos showed on YouTube but all in vain. After requesting my friend on how he did he just gave me a hint that device should be on Kitkat or above versions of Android. Now if anyone of you are using 4G on a 3G handset than can you please share the steps? Thank you.