Hack football strike BAGS (double bag hack) Works 100% LEGAL , you dont need any other apps

This is a weak point of this game
All you have to do is :
Connect to the game using wifi open the bag which is ready to open,open the cards,claim the prizes and immediately turn on 3g/4g and turn off wifi and there you go
You open a new bag again without losing the prizes claimed with wifi before
This is not ilegal nor a hack or a cheat

UPDATE : hey guys , it seems the new update v. 1.5 blocked this "hack" , sorry