What if you can trade 1GB of Lte for 2 GB of 3g( 3rd generation).
Also what if you can earn that.
Monthly to get 1 score of credits and assuming for 12 credits you will get 1gb of 3g data.
Or similar monthly get score credits and stack up those credits and exchange them for add-on.
Or maybe your family need some data and trade those credits to family members and they have the possibility to use it.
Or transfer Data to your family members if they are out:)