PM90 Android 9 User Manual
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User Manual
Please note your phone is battery-embedded design with removable battery and battery cover. Unauthorized
personnel are strictly prohibited from disassembling the phone. Make sure to use only the power adapter (5V
2A Output AC/DC) that came with PM90.
In case your phone does not work as expected, you are strongly recommended to restart it by pressing and
holding the power button for at least 12 seconds until the startup screen appears. If your phone has
encountered a serious error and cannot be recovered, you should reset your phone to factory settings by using
the menu, either “Backup & Reset”, or “Factory Reset”. For more details, please refer to “Factory data reset”
section on page 75
Note: Please be cautious while performing the factory data reset. Because this will erase personalized
settings and data saved in your phone, such as SMS, Contacts, Music, etc.