Hello,
Thank you for your Query,
There are tips on how to improve your LTE connections such as changing the antenna orientation, using a different antenna, manual band lock frequency bands, and moving the device to a different location to get a better signal. More information can be found here LTE Speed Discrepancies - Teltonika Networks Wiki. Here is a youtube video on how to lock your frequency band - How to Lock LTE Bands and Why | Teltonika Networks - YouTube
Moreover, you could consider having a second Sim card as a failover in that when the signal for the first Sim Card drops to a certain set level it will switch to the secondary sim card. The feature can be configured by navigating to Network> Mobile>Sim Switch and choosing the weak signal and selecting the signal strength when the signal drops below that threshold. More information can be found here RUTX11 Mobile - Teltonika Networks Wiki
If you decide to choose another Antenna I would recommend checking antenna requirements such as antenna connector, input impedance, and minimum input power and frequency range which can be checked here Third-party Antennas - Teltonika Networks Wiki (teltonika-networks.com).
Our partners at Poynting Antennas offer a range of antennas that could serve as an alternative to the antenna that you are currently utilizing. Here is a link to guide you on choosing the right Poynting antenna Choosing the correct Antenna from the start – Total Cost of Ownership - Poynting Tech - Antenna Solutions, South Africa, USA & Europe
You might also consider a feature called traffic shaping that allows you to optimize or guarantee performance, improve latency, or increase usable bandwidth for some kinds of packets by delaying other kinds. More information about how to set it up is here RUTX11 Traffic Shaping - Teltonika Networks Wiki.
Moreover, if you have multiple WAN interfaces eg Wired WAN and Mobile WAN it would allow you to apply load balancing that divides the traffic between multiple WAN interfaces. More information can be found here Load Balancing Rules/Policies examples - Teltonika Networks Wiki (teltonika-networks.com). Another alternative to it is the Bonding feature which is a solution provided by our partner Bondix intelligence.
It is important to note that the bonding feature is not supported by the Teltonika devices by default. For this to be achieved a Bondix intelligence third-party platform and their firmware is needed. More details about how the Bondix functionality works can be found here Bondix Intelligence - Teltonika Networks Wiki (teltonika-networks.com)
Please note, that this is a third-party solution, and you should contact Bondix intelligence directly as you would need to purchase a subscription in order to use their services. The contact information can be found in the link provided in the contact area in this link Bondix Intelligence - Teltonika Networks Wiki (teltonika-networks.com)
Best regards,
Kennedy. K