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Nokia 3310 3G User Guide
11. Back cover opening slot 12. Loudspeaker
To lock the keys automatically, select Menu > > Security > Keyguard >
Automatic keyguard and select On .
To unlock the keys, select Unlock and press * .
Avoid touching the antenna area while the antenna is in use. Contact with antennas affects the
communication quality and may reduce battery life due to higher power level during operation.
Do not connect to products that create an output signal, as this may damage the device. Do
not connect any voltage source to the audio connector. If you connect an external device
or headset, other than those approved for use with this device, to the audio connector, pay
special attention to volume levels.
Parts of the device are magnetic. Metallic materials may be attracted to the device. Do not
place credit cards or other magnetic storage media near the device, because info stored on
them may be erased.
Some of the accessories mentioned in this user guide, such as charger, headset, or data cable,
may be sold separately.
Note: You can set the phone to ask for a security code. Select Menu > > Security >
Keyguard and set Security code on. If there is a pre-set code, it is 12345. Change it to
protect your privacy and personal data. Note, however, that when you change the code, you
need to remember the new code, as HMD Global is not able to open or bypass it. This phone
cannot be located or locked remotely if lost.
SET UP AND SWITCH ON YOUR PHONE
Learn how to insert the SIM card, memory card, and battery, and how to switch on your phone.
Micro SIM
Important: This device is designed to be used with a micro SIM card (see figure) only. Use of
incompatible SIM cards may damage the card or the device, and may corrupt data stored on
the card. Please consult your mobile operator for the use of a SIM card that has a nano-UICC
cutout.
© 2019 HMD Global Oy. All rights reserved. 7
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