1. is there a working mod in BF?
ans: yes there is use this link to download it.
2. how can i use this hack?
ans: this link will help you on how to connect your phone and hack.
3.is mods/hacks are safe to use?
ans:yes they are safe as long as you don't abuse it.. always remember "its a risk to use mods/hacks" and here's the thread where you can check percentages of hack or how safe hacks are..
4. any updates regarding to U.I
ans: there is none.. and there will be none.. because Unit Injection is banned to this forum..because Unit Injection of blitz can ruined the game..i know you guys want to have good units.. but if you love the game don't ruin it be contented on the hacks that are posted here... were here to have fun.. not to ruin the game