GSM modem status can be checked at a glance by looking at the status bar.
Icon
Details
GSM modem is connected to network, but not to the internet (no data
connection).
Either on purpose, because an ethernet or WiFi connection is available.
GSM modem is properly configured, the 3G/E/etc icon reflects that the GSM
modem internet connection is in use.
WiFi is available and its internet connection is in use. WiFi has priority over GSM.
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.
SIM Status
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 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
6. Trouble shooting
There are many reasons for modem internet connection to not work. Carefully go through
each step of this trouble shooting guide. Make sure to start at the first step. When asking for
help, make sure to mention each step taken and the result.
