Microsoft today released new insider build for Windows 10 mobile users. The new insider build 14342.1004 is now rolling out to insiders in the fast ring. As per Microsoft, this build is exactly same as the previously released 14342.1003 build. The new build only brings some small fixes and tweaks. The main thing in this update is the fix for the battery life of some devices. If you are facing huge battery draining on insider builds, this build may cut down that issue. You will get more and more extra battery life in this new build.
Words from Microsoft :
” This build is exactly the same but with some additional fixes including a fix for the battery life issues we were seeing on some devices such as the Lumia 930, 929 and others which was also causing these devices to get hot ”
Read more at https://blogs.windows.com/windowsexperience/2016/05/16/announcing-windows-10-mobile-insider-preview-build-14342/#06GquvIFU4QopAww.99