Mooncatt
Ambassador
I don't think that works anymore. I precisely used it, but the last couple of times I tried, it didn't work.You might try the Verizon method ;
Shut phone down
Simultaneously press and hold volume down and power buttons.
Continue holding both until recovery menu appears.
Use volume down button to scroll down to clear cache.
Press power button to select.
Phone will clear system cache and then reboot.