Problem on MultiDevice invocation through multihreading

Hi.
I’m executing script for multiple devices with multithreading its working fyn with me, but issue is when I press Home Tab in android device its only work for sigle device.
Plz help me Out.
and also how to get Excel reporting to set values for differeny devices as devices executing through multithreading
and am seting value in excel sheet with getRow count of sheet but everytime it work for 1 device only.