@Sunshine Yes, I'm happy we seem to have it working but I'm still not sure I'm happy about the 'why'? I agree that it doesn't seem that any paint or ink markings have been removed by the SIM socket...

So, in case it helps anyone else etc ... I picked up a bunch of new SIMs from a range of providers and put them in my MR600. All of them were 'seen' by the router and a couple even brought the...

I picked up another brand new Smarty SIM today and installed it in my MR-600 Router. It's also not seen: The log file (on Debug) shows: 2018-10-01 00:00:37 [5] 4G: init LTE module, set flowstat...

Hi @Sunshine Thanks for the reply. That makes sense about the APN not impacting the issue, if it's a matter of the SIM not being seen at all. The first (and working) Smarty SIM is about a year old...

@Sunshine I can't get the log from the Smarty SIM that doesn't work in that router as it's currently working in a Huawei router at our daughters but the router in question is: Firmware Version:‪1.6.0...

Sunshine wrote @T_i_m Hi, do you mean the same MR600 cannot detect one of the two Smarty SIMs? What is the hardware and firmware version of the MR600? With the non-detecting SIM card inserted...