It does not if anything it improves battery life. There are a few badly coded apps (Facebook) that cause battery drain but 99% do not.Some seem to think it does and some not, if it does do you think it makes much of a difference?
And killing them, opening them, killing them, opening them, killing them, opening them drains the battery life moreso.Hi,
Yes, it slightly drains the battery life.
It depends on if they are actually running in the background or not (which you can usually see under battery usage stats in settings).Some seem to think it does and some not, if it does do you think it makes much of a difference?