Wireless Joint

Would one of you guys be willing to help me with at commands on rm520n-gl. iv made a post and haven't had any help yet but I keep getting a sim missing and iv looked can't find how to reset the modem to factory and start from scratch to see if it would finally connect.

Or atleast help with at commands I'm having trouble with it and so far no matter what sim I use in the usb enclosure it says sim missing.

Can someone help me figure out how to set up my rm520n-gl with visible. Every time I put the sim card in it says sim missing. I just got it from wireless haven and I set it up just like I did my em160r-gl and visible currently works on that. but not the rm520n-gl. I'm using a we826 first try I tried...

Well what gets me is they asked what device he was putting it in and he said mofi and then gave the the s/n for it. But then just came back and said that device is blacklisted.

It's a reseller and because I tried the tablet plans att had and set it up the way it was explained on here and att still shut them off. And idk I know he used the s/n off his mofi but iv tried it in both his mofi and my router that is explained at the top it connects to att broadband apn but still ...

So I'm trying to help a buddy out. He got new isp. It shows I'm connected but for some reason I don't have internet. they sent a deal saying apn name is Townbroadband and apn is broadband. And I had it working with the other att third party so I'm confused why it wouldn't be the same. I'm on we826 u...

So iv searched trying to find any info on why my quectel em160 i just purchased wont let me do at commands and couldn't find anything. Its in a we826 with m.2 adapter from The Wireless Haven. When I try to do an at command it says cannot open device /dev/ttyusb2. Im not use to quectel stuff my route...

I figured it out finally i got it up and going now. I found a few post on how to reset the modem and stuff back to oem and just redid the at commands works fine now!

I’m new to this custom router stuff! I built a router using a raspberry pi 3 b and a SIERRA WIRELESS module MC7455 LTE 4G module I’m connected to the internet and was able to use my at commands before but now when I try to type a command it just disappears while typing it. is there something I’m doi...