Sony Xperia Z2 SO-03F Instruction Manual page 209

Docomo
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Notes
When Upgrade Android software is
performed, restoring the previous Android
software is not possible.
Upgrade Android software with the battery
fully charged.
For Upgrade Android software, docomo mini
UIM card is needed. For using packet
communication, subscription to sp-mode is
required.
Exit from all applications before upgrading
Android software. Activating applications
while upgrading may interrupt Upgrade
Android software.
Do not turn off the terminal while upgrading.
While performing Upgrade Android software,
all other functions including making/
receiving calls are unavailable.
Upgrade Android software is unavailable in
the following cases.
- During a call
- When
(out of service area) is displayed
圏外
- During International roaming
- During Airplane mode
- Tethering in use
- While updating software
- When date and time are not set correctly
- When the remaining battery is not sufficient
- When the remaining memory is not
sufficient
Upgrading software may take time.
During international roaming or when the
terminal is out of service area, "When docomo
network is not available, or during roaming,
install cannot be started even if Wi-Fi is
connected. " appears.
When Upgrade Android software is
performed, some settings are initialized. Make
the settings again.
When upgrading Android software, the
private information concerning the terminal
(model, serial number, etc.) is automatically
sent to the server of DOCOMO. DOCOMO
does not use the sent information for
purposes except Upgrade Android software.
If Upgrade Android software failed and all
operations become disabled, please contact a
DOCOMO-specified repair office.
207
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