Dear Teltonika Team,
our customers are using RUT 900 / 950 devices. In the last 3 years we discover a problem when the SIM card with a new provider is used.
The problem is present up to the newest Firmware Version (actually on a RUT950 V06.03.2 installed)
The customer change the SIM card from E-Plus to Telekom operator. After this, the SIM card is successfully loged in (Registered (home) with 4G LTE) BUT all the time disconnected. Bytes send / received = N/A, Data connection state = Disconnected.
If we do a reset to default values, the router goes online without any problem (after setting the same values than before in the mobile section). If we don't do the reset we get no internet connection.
Actually the router is online by a DSL connection, so remote access is possible.