Reliance Jio has been creating all the latest buzz in the Indian mobile space these days. Everyone is trying to get their hands on a Jio 4G SIM card to enjoy the free 4G data and calls offer for 90 days. We have posted a lot many tricks related to Reliance Jio and this post is about how to use Reliance Jio 4G SIM in 3G phone as many of us are still using phones which are not 4G compatible.


Keep in mind that 4G is faster than 3G and so you won’t be using the Jio SIM to its full potential. However, we thought you’d want to know how to use Reliance 4G SIM in 3G phone because even then it will give you faster speed than other carrier’s 3G.

The 3G smartphone that you are using should have these requirements to execute this trick:
1. Android 4.4 KitKat or above
2. MediaTek chipset


  1. Download and install the MTK Engineering Mode app on your phone from this link.
  2. Open app > Engineering Mode / Service Mode > Run Advance Setup.
  3. Go to “Select preferred Network Option” and here you can select LTE, HSPDA etc according to your choice.

This is it for ” How to use reliance 4G SIM in 3G phone”. Enjoy !