[Sony Xperia 5 II Themes, Apps, and Mods] farhanneedsnobtcs:
For this you will need to have working adb on your computer

step 1 : Open adb and type adb devices on your computer

step 2 : Type adb shell

step 3 : Copy and paste the code

pm uninstall -k --user 0 com.kddi.android.auinitialsetting
pm uninstall -k --user 0 com.android.systemui.telephony.product.res.overlay.kddi
pm uninstall -k --user 0 android.enterprise.overlay.kddi
pm uninstall -k --user 0 com.sonymobile.updatecenter.overlay.kddi.gota
pm uninstall -k --user 0 com.aura.oobe.kddi
pm uninstall -k --user 0 com.kddi.android.cmail
pm uninstall -k --user 0 com.android.server.telecom.product.res.overlay.kddi
pm uninstall -k --user 0 com.android.carrierconfig.product.res.overlay.kddi
pm uninstall -k --user 0 com.kddi.cs.app001
pm uninstall -k --user 0 android.kddi.product.overlay
pm uninstall -k --user 0 com.sonymobile.kddi.settings
pm uninstall -k --user 0 com.android.phone.product.res.overlay.kddi
pm uninstall -k --user 0 com.kddi.market
pm uninstall -k --user 0 com.android.rro.kddi.product.settings
pm uninstall -k --user 0 com.sonymobile.simplehome.overlay.kddi
pm uninstall -k --user 0 com.android.settings.product.res.overlay.kddi
pm uninstall -k --user 0 com.sonymobile.supplementallyservice.kddi
pm uninstall -k --user 0 com.kddi.extcontroldevice
pm uninstall -k --user 0 com.sonymobile.nfc.remotelock.kddi
pm uninstall -k --user 0 com.kddi.selfcare.external
pm uninstall -k --user 0 com.kddi.selfcare.client
pm uninstall -k --user 0 com.kddi.android.au_wifi_connect2
pm uninstall -k --user 0 com.sonymobile.simlock.kddiremotesimlock
pm uninstall -k --user 0 com.android.providers.settings.kddi.overlay
pm uninstall -k --user 0 android.product.res.overlay.kddi
pm uninstall -k --user 0 com.kddi.android.smartpass
pm uninstall -k --user 0 com.android.systemui.kddi.product.overlay
pm uninstall -k --user 0 com.sonymobile.android.externalkeyboardjp
pm uninstall -k --user 0 jp.auone.wallet
pm uninstall -k --user 0 ai.nreal.nebula.service.jp.xperia
pm uninstall -k --user 0 jp.sony.spot.sp
pm uninstall -k --user 0 com.sony.drbd.reader.other.jp
pm uninstall -k --user 0 jp.netstar.familysmile
pm uninstall -k --user 0 com.felicanetworks.mfw.a.boot
pm uninstall -k --user 0 com.felicanetworks.mfc
pm uninstall -k --user 0 com.felicanetworks.mfs
pm uninstall -k --user 0 com.felicanetworks.mfm.main
pm uninstall -k --user 0 com.sonymobile.fmradio
pm uninstall -k --user 0 com.google.android.apps.googleassistant
pm uninstall -k --user 0 com.google.android.googlequicksearchbox
pm uninstall -k --user 0 com.google.android.calendar
pm uninstall -k --user 0 com.google.android.youtube
pm uninstall -k --user 0 com.google.android.apps.maps
pm uninstall -k --user 0 com.somc.sog02.onlinemanual
pm uninstall -k --user 0 com.google.android.gm
pm uninstall -k --user 0 com.sonyericsson.music
pm uninstall -k --user 0 com.google.android.calculator
pm uninstall -k --user 0 com.google.android.deskclock
pm uninstall -k --user 0 com.sonymobile.simplehome

To revert back, copy and paste this code

cmd package install-existing com.kddi.android.auinitialsetting
cmd package install-existing com.android.systemui.telephony.product.res.overlay.kddi
cmd package install-existing android.enterprise.overlay.kddi
cmd package install-existing com.sonymobile.updatecenter.overlay.kddi.gota
cmd package install-existing com.aura.oobe.kddi
cmd package install-existing com.kddi.android.cmail
cmd package install-existing com.android.server.telecom.product.res.overlay.kddi
cmd package install-existing com.android.carrierconfig.product.res.overlay.kddi
cmd package install-existing com.kddi.cs.app001
cmd package install-existing android.kddi.product.overlay
cmd package install-existing com.sonymobile.kddi.settings
cmd package install-existing com.android.phone.product.res.overlay.kddi
cmd package install-existing com.kddi.market
cmd package install-existing com.android.rro.kddi.product.settings
cmd package install-existing com.sonymobile.simplehome.overlay.kddi
cmd package install-existing com.android.settings.product.res.overlay.kddi
cmd package install-existing com.sonymobile.supplementallyservice.kddi
cmd package install-existing com.kddi.extcontroldevice
cmd package install-existing com.sonymobile.nfc.remotelock.kddi
cmd package install-existing com.kddi.selfcare.external
cmd package install-existing com.kddi.selfcare.client
cmd package install-existing com.kddi.android.au_wifi_connect2
cmd package install-existing com.sonymobile.simlock.kddiremotesimlock
cmd package install-existing com.android.providers.settings.kddi.overlay
cmd package install-existing android.product.res.overlay.kddi
cmd package install-existing com.kddi.android.smartpass
cmd package install-existing com.android.systemui.kddi.product.overlay
cmd package install-existing com.sonymobile.android.externalkeyboardjp
cmd package install-existing jp.auone.wallet
cmd package install-existing ai.nreal.nebula.service.jp.xperia
cmd package install-existing jp.sony.spot.sp
cmd package install-existing com.sony.drbd.reader.other.jp
cmd package install-existing jp.netstar.familysmile
cmd package install-existing com.felicanetworks.mfw.a.boot
cmd package install-existing com.felicanetworks.mfc
cmd package install-existing com.felicanetworks.mfs
cmd package install-existing com.felicanetworks.mfm.main
cmd package install-existing com.sonymobile.fmradio
cmd package install-existing com.google.android.apps.googleassistant
cmd package install-existing com.google.android.googlequicksearchbox
cmd package install-existing com.google.android.calendar
cmd package install-existing com.google.android.youtube
cmd package install-existing com.google.android.apps.maps
cmd package install-existing com.somc.sog02.onlinemanual
cmd package install-existing com.google.android.gm
cmd package install-existing com.sonyericsson.music
cmd package install-existing com.google.android.calculator
cmd package install-existing com.google.android.deskclock
cmd package install-existing com.sonymobile.simplehome