Hello,
I am considering getting the Mudi V2 and make it my sole internet access, but I have mix feelings due to the bad reviews that I have read on Amazon and Reddit.
I have the AR 150 and had no issues
I have the Flint 1st version and it's perfect
I had the Mifi and that did not go well
Overall I think GLnet makes great devices.
Can I get some feedback's from someone where I can be convinced that it would be a good purchase?
Regards,
Generally, the issue is not from router but the modem when it connecting to the operators cellular.
Since there are many types of SIM cards (normal SIM cards, private network SIM, SIM from some secondary agents, etc.), and the global so much operators, their network may be slightly different. Thus, there may seem to be many modem problems. But when the issue occurs, we will have dedicated guys to help and solve the issue.
Anyway, if you use the normal SIM which can work in the phone, dongle, MiFi, etc, the Mudi V2 (GL-E750) also work well.
OK, but a smartphone that have a Modems too, do not seem to suffer from this issue of different Sim cards unless the provider decided to block a particular model.
right 
Change IMEI..
Also can try it.