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Forum Discussion
MR1100 suddenly cannot connect to cell service
"Help!" I have an (out.of.warranty) MR1100. It worked fine for about a year - and then suddenly stopped yesterday. The error message on boot-up says: "Mobile Broadband Disconnected - Your data...
Username/Password: Leave blank
Save and reboot.
Force LTE Only Mode:
In the same web UI, try forcing the device to use LTE only, not auto or 3G fallback, just to see if it locks onto a stable signal.
Firmware Check:
If possible, check if the firmware is up to date under Settings > About > Software Version. Some firmware versions have bugs that can cause loss of mobile connectivity. If you're unsure, Netgear support or community might help match your version.
Try SIM in a Phone:
Just to be 100% sure the new SIM is provisioned correctly, try putting it into a regular phone and confirm that mobile data works — not just voice/text. Then reinsert into the MR1100.
Signal Booster Test (Optional):
Even though 3 bars seem okay, the MR1100 can be more sensitive than phones. If you have access to a location with better signal (or a signal booster/repeater), test there just once to rule out signal thresholds. Instant ink support
🚨 If All Else Fails:
If you’ve tried all this and it still won’t connect, there may be:
A hardware issue (e.g., modem failure or antenna fault — common in older units).