"SIM card cannot be registered." on GLXE300

I had a Puli running just fine on T-Mobile, and a client wanted a network switch. We tried it, and it didn’t work with the provider.

After that we put the original sim card in and it has the error “SIM card cannot be registered.”. I followed the instructions on Q2 of the modem FAQ - Modem FAQ - GL.iNet Docs 3

The response to AT+QPRTPARA=3 was OK, I waited 30 seconds, went back to the main screen, choose usb4, chose manual, set the APN to fast.t-mobile.com, and the connection to LTE/UMTS/GPRS. clicked apply. Same response, “SIM card cannot be registered.”.

I repeated the process after:
modem reset
router reset
a new sim card
troubleshooting with T-Mobile to make sure the sim is active and the imei etc are correct
factory reset
AT+COPS manual network release, rebind
removing and cleaning sim card and slot
updating firmware to 3.216

I have run out of ideas.

[update]
I found a firmware version 4 for the puli GL.iNet download center
went through the same list as above, same results.

Can you query the following commands and tell me the results?

ATI
AT+QCFG="nwscanmode"
AT+QCFG="band"
AT+QCAINFO
AT+CEREG?

First router tested of two.
Command, followed by responses:

ATI
Quectel
EC25
Revision: EC25AFFAR07A08M4G

OK

AT+QCFG=“nwscanmode”
+QCFG: “nwscanmode”,0

OK

AT+QCFG=“band”
+QCFG: “band”,0x260,0x42000000000000381a,0x0

OK

AT+QCAINFO
ERROR

AT+CEREG?
+CEREG: 0,2

OK

Second router of two tested. Command followed by response:

ATI
Quectel
EP06
Revision: EP06ALAR02A08M4G

OK

AT+QCFG=“nwscanmode”
+QCFG: “nwscanmode”,0

OK

AT+QCFG=“band”
+QCFG: “band”,0x260,0x2000000003300185a,0x0

OK

AT+QCAINFO
ERROR

AT+CEREG?
+CEREG: 0,2

OK

You can try below AT command

AT$QCPRFMOD=PID:1,OVRRIDEHOPDP:"IPV4V6"

First Router:
Turned the router on, logged in and tried that. Response was “OK”. no change to connection. Tried modem reset, hard reboot, resetting the sim card, no change at all.

Second router:
Same result

Hi @RemoteGuy & @luochongjun,

I have a GL XE300 with exactly the same problem.
I tried different sim cards, reset, reboot, AT commands + firmware upgrade to 3.216.
Does not work anymore since today.

Please help.
thx

Long delay between posts, but it looks like the sim card cannot be swapped or removed, even if the unit is off. I’m going to keep working with support on this one.

Got two new devices. One worked after a lot of tinkering, and the other still hasn’t. Anybody have the cheat codes for easy cell setup?

Bit late here as I didn’t see the previous post.

I had the same issue with the first Puli I had. It appeared like inserting the sim either somehow slid past the spring mechanism or broke it as I couldn’t push the sim down to activate the spring release.

Even with the latest version of the firmware, I still get the occasional message that the SIM isn’t registered. Sometimes resetting the modem fixes it, or a power off/on.

Cheers.

Update:
After a few months of getting no traction with T-Mobile and Simetry, I went to Walmart and grabbed a bunch of sims with the intent of testing them until I found a carrier that worked. Verizon said it doesn’t work on the network, Simple talk didn’t work, Total by Verizon failed too, BUT Boost Mobile worked! I was up and running on a “bad device” in 10 minutes with Boost. I tried Boost on thee other XE300 routers we have marked “DEAD” and ALL OF THEM WORKED! I now have all our routers on Boost and they simply work. I also discovered while at the Boost store that if I removed a sim while the router was running the SIM was dead. So don’t ever hot swap a sim!

TLDR: I had a carrier issue, switching to Boost Mobile fixed it.

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