Juniper Allegro 2 Owner's Manual page 8

Apply a Screen Protector (Optional)
The touchscreen is extremely scratch-resistant, so a screen
protector is not included with the Allegro 2. If you decide to
apply one, refer to the installation instructions included with
the screen protector for specific details.
Install the Battery Pack, SD Card, and Mini SIM Card
The Allegro 2 uses a rechargeable Li-Ion battery pack.
Install and charge the battery pack as follows:
1. The battery compartment is accessed from the back of
the handheld. Loosen the 4 captive screws holding the
battery compartment door in place using a #1 Phillips
screwdriver. Remove the door.
!
CAUTION: The Allegro 2 is not sealed against water and dust
when the battery door is not installed.
2. If you are using a micro SD card for additional memory
or a mini SIM card with the 3G Data Modem (optional),
you can install them now before you install the battery
pack or at another time. See more details about these
cards in Chapter 2, Hardware Components, Micro SD
Cards and Chapter 8, 3G Data Modem, Install the Mini
SIM Card.
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Allegro 2 Rugged Handheld Owner's Manual