User's Guide

217
Appendix/Index
Notes
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When Upgrade Android software is
performed, restoring the previous Android
software is not possible.
･
Upgrade Android software with the battery
fully charged.
･
For upgrading using packet communication,
docomo nano UIM card is required. For using
packet communication, subscription to sp-
mode is required.
･
For upgrading via Wi-Fi, docomo nano UIM
card is not 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
圏外
(out of service area) is displayed
- During International roaming
- During Airplane mode
- Tethering in use as an access point
- When date and time are not set correctly
- When the remaining battery is not sufficient
- When the remaining memory is not
sufficient
- While updating software
･
Upgrading software may take time.
･
During international roaming or when the
terminal is out of service area, "Unable to start
upgrading in an area where Wi-Fi or FOMA/Xi
signal is unreachable" 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.