Nobody likes having their phone suddenly switch off because it's out of juice. In an effort to help people avoided the dreaded black screen of death, antivirus software company Avast compiled a list of apps with the biggest impact on your battery life – both when running in the background automatically and when you open them yourself.They were tested on Android phones, but the findings can be broadly applied to the apps that are also available on iPhones.Take a look at these apps and check to see if they might be ruining your battery life.The 10 worst apps for battery life that run automatically in the background are:1) Samsung AllShare2) Samsung Security Policy Updates3) Beaming Service for Samsung4) ChatON Voice & Video Chat5) Google Maps6) WhatsApp Messenger7) Facebook8) WeChat9) AppLock10) DU Battery SaverThe 10 worst apps when they're opened by the user are:1) Samsung WatchON2) Samsung Video Editor3) Netflix4) Spotify Music5) Snapchat6) Clean Master7) LINE: Free Calls & Messages8) Microsoft Outlook9) BBC News10) ES File Explorer File ManagerSo, if you're ever lost in a desert, don't use Facebook or Netflix to pass the time.