Offline play.
It was a really great time killer. Back then, I used to boot this game up whenever and wherever. I would just keep playing and dying and playing and dying while mixing and matching sorts of weapons and perks. Now it saddens I couldn’t play the game offline. Playing offline gives me a lot of power saving for the battery so I can use up all the times I am bored by playing the game without putting my phone’s battery low. So, thank you! This is good bye for me for I cannot let my 100% charged-up phone gone to 30% in just 45 mins of playing.