The Sony Xperia test codes for various Xperia device are on this list. Test codes are all working for the many varieties of Xperia smart phones especially the Sony Xperia T3, Xperia Z4 Xperia E,
Xperia e4g and other Xperia devices.
This test codes can not be used as unlock codes nor as direct reset codes.
They are used solely for testing very important components of your Xperia smartphone which include
– Service info
– Service settings
– Service tests
– Customization Settings
You can choose between the above functions, here are the codes to do, sorry it is actually one. Sony loves keeping things simple that is why there is only a code for this many functions.
To test the above code on your Sony Xperia just enter the following code *#*#7378423#*#* into the dialler. Then test the functionalities.
Here we are interested in only the test functionalities, though if you want to explore other functions you are on your own.