Logic Instrument FIELDBOOK F1, Быстрый старт

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Troubleshooting
My phone is frozen or cannot switch on
Check the battery power level, charge the device for at least 20 minutes.
My phone cannot connect to a network or “No service” is displayed
Try connecting in another location. Verify the network coverage with
your operator.
Unable to make outgoing calls
Make sure your phone is connected to a network and the network is not
overloaded or unavailable.
Unable to receive incoming calls
Make sure your phone is switched on and connected to a network
(check for overloaded or unavailable network).
SIM card PIN locked
Contact your network operator to obtain the PUK code (Personal
Unblocking Key).
To configure a new 4G network:
On your device, tap “Settings”.
Select Wireless & networks > More... > Mobile networks.
Select Network settings. In Network operators, select your operator. In
Access Point Names, select the correct access point name and enter the
exact connection parameters provided by your 3G/4G provider.