User Manual

4. Operation
4.1. SIM status
The SIM status is displayed on the GSM overview page on the GX device. The following table shows all possible states and their
meaning:
Status Description
Ready SIM card is installed properly and registered to the network.
SIM not inserted SIM card is missing or not inserted properly. SIM tray might hang out a little.
PIN required SIM card requires a 4 digit PIN for unlock.
PUK required SIM is locked due to wrong PIN inputs. 8 digit PUK is required to release the lock state.
SIM failure SIM does not respond - might be broken.
SIM busy SIM is in busy state.
SIM wrong Type of SIM is not supported.
4.2. Status Bar
Cellular modem status can be checked at a glance by looking at the status bar.
Icon Details
Cellular modem is connected to network, but not to the internet (no data connection). Possibly on purpose, because
an Ethernet or WiFi connection is available.
Cellular modem is properly configured, the 4G/3G/Edge etc. icon reflects that the cellular modem internet
connection is in use and what type of connection is applied.
WiFi is available and its internet connection is in use. WiFi has priority over cellular connection.
SIM-PIN code is required.
Roaming, only informative. To use internet connection while roaming, it needs to be enabled in Settings → GSM
modem → Allow roaming.
4.3. GPS
When the optional active GPS antenna is added, the position is sent to the VRM portal and also displayed in the GX device as
follows:
GX LTE 4G manual
Page 6 Operation