Depends on what you mean by bundling. Both cannot run at the same time (2 sims but only one modem). Speed bundling is therefore not possible. However, volume bundling is possible, i.e. you can automatically switch to the second SIM after a certain data volume has been used up, for example. This is handled very well in the current FW. Greetings and have fun with the device (I have several running, very good, only dyndns as VPN host is unfortunately missing here).
Only if it is explicitly designed for the corresponding frequencies. I took a dedicated LTE antenna, there are some available at Digitec. A short connection line is also advantageous, as every metre attenuates again.
In my opinion, it is due to the provider of the SIM card.
If the reception quality is insufficient/too weak, the transfer does not take place in the required quantity. I had to switch from the provider Swisscom to Sunrise. Now it works.
So it's very dependent on the location.
I was previously using a Huawei router. The same problem was there.
It is not a 4G relay, but a 4G router, it will not influence the signal on your phone.
The antennas are not very good so I added a directional antenna.
It is possible to use only one SIM card.
1) The antennas are included (2 for WLAN and 2 for GSM/3G/4G).
2) Yes, it is a modem/router with 4 Ethernet ports. Internet can therefore be obtained via WLAN or LAN.
This router can very well be installed in a car. However, it should be noted that if the router is in the car, the reception via LTE will also be poorer depending on the position of the router in the car. We use an additional antenna that we position according to need and reception. Sometimes behind the windscreen, sometimes outside on the roof or somewhere else. However, the signal strength also depends on the provider/coverage of your SIM card. The antenna cable must not be too long, however, as some signal strength will be lost. Regarding power supply via 12 volts, I refer you to the explanations by "Digibeni".
Please ask Teltonika directly. I only need the second sim as a backup.
The software can be adapted by a customised setting, depending on the purpose of use.
Yes, but this is not possible via DynDNS, as you are most likely operating the device with a SIM card and the IP address is part of the internal address range of the mobile operator. However, since the RUT950 also has an integrated VPN client, this is possible. However, I access my OpenVPN server of my Synology NAS at my residence via the OpenVPN client of the Synology NAS (on the RUT950) of my second location. The second-location NAS is on an internet-controlled outlet and automatically starts the VPN connection when it boots up.