A short time shield

I think that when players get out from the game just to open whatsapp or to perform a few things, they should get a short time of shield. It should be about 2-3 minutes, or maybe lesser.. It is annoying that you got attacked just after you quit the game to open FB, notifications or somethings else.. People cannot play all day long, I think that this short shield can protect your village from attack in a short period of times to give users a chance to check on their Whatsapp messages or FB, this shield will be gone after 2-3 minutes you left the game. Not to demand, but this shield gonna be useful, only if you intend to leave for a short times, to check about new messages or important inbox, or maybe give you a chance to restart your phone without being attacked in a short period of time, if your phone freeze, or your battery dead..