TP-Link TL-MR3220 and ZTE MF627 follow up

I see that 90% plus of the readers of this blog are interested in the TP-Link TL-MR3220 and the ZTE MF627 so I'll follow up on the original piece.

There are still a few issues with the TL-MR3220 and the ZTE MF627.

1) I spent the weekend in a location with poor mobile coverage. It seems that if the SIM can't register with a network then the router doesn't recognise the modem. It took a bit of SIM swapping to find that.

2) With good signal it can work for hours but I've not got to the bottom of occasional disconnections. I think these are mobile network initiated so that when there is no data flow the network closes down the connection to the dongle and this confuses the router. This is only a theory and I've also been using phone SIMs (as against SIMS intended for dongles) up until now.

I've got a proper "3" dongle SIM coming and I'll give this a go with the TL-MR3220 and the ZTE MF627 combination.

From a bit of Googleing I'm increasingly of the opinion that the TL-MR3220 plays better with the Hauwei E160 than the ZTE dongles and at some stage getting one of those might be the answer.