Its not very comforting how old this post is with no dev repsonse but this is a serious issue considering the type of game this is, I am just one person but for what its worth, I have a new phone that is less than a month old that has now been run down to zero and force shutdown twice because i fell asleep and the post battle screen sat for hours draining my battery to nothing, which is not good, my phone will have to be replaced sooner because of it.  Please take a little bit of your resources from making new characters to sell to fix this, if my phone lasts longer i'll have more money to spend on the game:)