Factory reset Sony Xperia E4 E2105 using Xperia Companion If the problem still exists, force the device to shut down.
If your device seems to have frozen, restarts repeatedly, or doesn’t start at all after you’ve updated the Xperia software or after you’ve performed a software repair or a factory data reset, try forcing the device to shut down then try turning it back on. You need to provide your Google account login details to perform this operation.
If you can not access your Sony Xperia normally because of forget your screen unlock password, PIN, or pattern, you can use the device repair feature in Xperia Companion Software to erase the security layer.