I tried to hold up Power and Volume Up at the same time with the device on but that's not working.
The phone has to be off.
I know that but getting to the menu for wiping the cache partition is the same procedure. Unfortunately after further research I discovered that if you are on Verizon:I am not talking about a factory data reset. That is a different process than wiping the cache partition.
I know that but getting to the menu for wiping the cache partition is the same procedure. Unfortunately after further research I discovered that if you are on Verizon:
Wipe Cache Partition - Sony Xperia Z3V
[Device-Specific Instructions]
This feature is not included on this device.
Sucks
Further investigation revealed instructions on T-Mobile's Support page which indeed indicates starting the procedure with the phone on (I stand corrected)
Link
Well, RATS!And this does not work with the Verizon version either...