# Connectivity **URL:** https://community.particle.io/c/connectivity/49.md [Latest](https://community.particle.io/latest.md) · [Categories](https://community.particle.io/categories.md) · [Tags](https://community.particle.io/tags.md) --- ## [Looking for Troubleshooting Help?](https://community.particle.io/t/looking-for-troubleshooting-help/58804)
**Author:** [@marekparticle](https://community.particle.io/u/marekparticle)\ **Replies:** 0\ **Last updated:** [December 16, 2020, 1:36pm UTC](https://community.particle.io/t/looking-for-troubleshooting-help/58804 "2020-12-16T13:36:15Z")
Particle has assembled a number of resources to help you diagnose and resolve connectivity issues. For help with Cellular connectivity, we strongly recommend reviewing our Cellular Connectivity Guide (link). This guide … --- ## [About the Connectivity category](https://community.particle.io/t/about-the-connectivity-category/53713)
**Author:** [@Joe](https://community.particle.io/u/Joe)\ **Replies:** 1\ **Last updated:** [March 11, 2026, 12:31am UTC](https://community.particle.io/t/about-the-connectivity-category/53713 "2026-03-11T00:31:03Z")
For discussions about connectivity (LTE, 2G/3G, Wi-Fi, BLE, NFC, Ethernet). --- ## [Boron devices won't connect after changing location (longer distance)](https://community.particle.io/t/boron-devices-wont-connect-after-changing-location-longer-distance/72626)
**Author:** [@connectedquark](https://community.particle.io/u/connectedquark)\ **Replies:** 4\ **Last updated:** [October 4, 2026, 7:47pm UTC](https://community.particle.io/t/boron-devices-wont-connect-after-changing-location-longer-distance/72626 "2026-10-04T19:47:55Z")
I'm trying to figure out possible causes, and remote fixes, for a couple of my Boron units. Unit A was previously placed at a remote location (about 100 miles from my work location) for monitoring and data gathering. It'… --- ## [Five B404x not connecting after setup](https://community.particle.io/t/five-b404x-not-connecting-after-setup/72747)
**Author:** [@SammyG](https://community.particle.io/u/SammyG)\ **Replies:** 3\ **Last updated:** [October 3, 2026, 3:14pm UTC](https://community.particle.io/t/five-b404x-not-connecting-after-setup/72747 "2026-10-03T15:14:37Z")
Setting up 5 B404x's fresh out of the box. I'll be honest, it rarely goes smooth and connection can take a while. However these five just really don't want to connect today. Will try again in the morning. I am suspici… --- ## [Boron LTE-M (EtherSIM) on Bell 302610 – registration denied for 234-xx IMSIs, only 732-123 registers – 6/60 devices offline since Sept 15](https://community.particle.io/t/boron-lte-m-ethersim-on-bell-302610-registration-denied-for-234-xx-imsis-only-732-123-registers-6-60-devices-offline-since-sept-15/72756)
**Author:** [@RDTribor](https://community.particle.io/u/RDTribor)\ **Replies:** 0\ **Last updated:** [October 1, 2026, 4:06pm UTC](https://community.particle.io/t/boron-lte-m-ethersim-on-bell-302610-registration-denied-for-234-xx-imsis-only-732-123-registers-6-60-devices-offline-since-sept-15/72756 "2026-10-01T16:06:36Z")
Hi, Since September 15, 2026, 6 of our 60 Boron LTE-M devices (EtherSIM) in Quebec, Canada have had major connectivity problems. Before that date they had been stable for months. Devices on carriers other than Bell were… --- ## [Ideal signal strength/quality and round-trip time for cellular connection in eastern Africa](https://community.particle.io/t/ideal-signal-strength-quality-and-round-trip-time-for-cellular-connection-in-eastern-africa/72298)
**Author:** [@tmason](https://community.particle.io/u/tmason)\ **Replies:** 2\ **Last updated:** [September 23, 2026, 2:12pm UTC](https://community.particle.io/t/ideal-signal-strength-quality-and-round-trip-time-for-cellular-connection-in-eastern-africa/72298 "2026-09-23T14:12:44Z")
Some of our clean water well remote monitors deployed to eastern Africa appear to be experiencing high latency while others are not. Our remote monitors enqueue messages for hourly transmission and deliver messages to o… --- ## [\[5g e-sim\] third part connection very unrealiable](https://community.particle.io/t/5g-e-sim-third-part-connection-very-unrealiable/72502)
**Author:** [@emmanuel-j](https://community.particle.io/u/emmanuel-j)\ **Replies:** 1\ **Last updated:** [September 8, 2026, 11:54am UTC](https://community.particle.io/t/5g-e-sim-third-part-connection-very-unrealiable/72502 "2026-09-08T11:54:06Z")
Hello team, Our company is checking out your Tachyon devkit. I'm having trouble getting 5g working with t-mobile esim. Very rarely the connect cmd succeeds, but the connection drops within few minutes again. However, th… --- ## [B404 No messages but good signal](https://community.particle.io/t/b404-no-messages-but-good-signal/72484)
**Author:** [@reyesel](https://community.particle.io/u/reyesel)\ **Replies:** 2\ **Last updated:** [August 26, 2026, 7:49pm UTC](https://community.particle.io/t/b404-no-messages-but-good-signal/72484 "2026-08-26T19:49:59Z")
Anyone experience B404s that show what should be decent signal but can't reach them or get data from them. Also seeing a lot of cloud disconnects. One specific have 43% strength and 75% quality but still drops out freque… --- ## [Tachyon as Router](https://community.particle.io/t/tachyon-as-router/72472)
**Author:** [@Thinner4203](https://community.particle.io/u/Thinner4203)\ **Replies:** 0\ **Last updated:** [August 24, 2026, 10:27am UTC](https://community.particle.io/t/tachyon-as-router/72472 "2026-08-24T10:27:20Z")
Hi, I have been navigating the forum and it seems a mixed bags of opinions about the current state of hardware. I want to use my Tachyon as a router by sharing the SIM connection via WiFi. Is this a viable option? Is th… --- ## [Argon unable to connect to cloud and unable to update NCP](https://community.particle.io/t/argon-unable-to-connect-to-cloud-and-unable-to-update-ncp/72416)
**Author:** [@usuario\_feliz](https://community.particle.io/u/usuario_feliz)\ **Replies:** 4\ **Last updated:** [August 17, 2026, 11:02am UTC](https://community.particle.io/t/argon-unable-to-connect-to-cloud-and-unable-to-update-ncp/72416 "2026-08-17T11:02:15Z")
Hello, I just opened a very old Argon. I am unable to get it to connect to cloud. Below are some of the logs. I've tried flashing via the cli and web. I've tried using the device doctor and the device restore. It says it… --- ## [M-SoM (M524) BLE central — max number of simultaneous connections?](https://community.particle.io/t/m-som-m524-ble-central-max-number-of-simultaneous-connections/72005)
**Author:** [@huegi](https://community.particle.io/u/huegi)\ **Replies:** 5\ **Last updated:** [June 30, 2026, 4:10pm UTC](https://community.particle.io/t/m-som-m524-ble-central-max-number-of-simultaneous-connections/72005 "2026-06-30T16:10:53Z")
Hi, I'm trying to connect ~10 BLE sensors to an M524 (M-SoM) acting as central, but in my tests it caps out at 4 simultaneous connections. I know the Tracker SoM (nRF52840) is limited to 3 central connections. Is there … --- ## [Photon WiFi connectivity, new credentials](https://community.particle.io/t/photon-wifi-connectivity-new-credentials/71925)
**Author:** [@DaveF](https://community.particle.io/u/DaveF)\ **Replies:** 3\ **Last updated:** [June 19, 2026, 3:57am UTC](https://community.particle.io/t/photon-wifi-connectivity-new-credentials/71925 "2026-06-19T03:57:20Z")
I have a photon that has been working fine in the past. But we moved and I want to connect to our new WiFi network. I do have 2.4 GHz WiFi available, but can't seem to find an easy way to put in new credentials without o… --- ## [Apparent cellular connectivity issues across the fleet for the fourth day](https://community.particle.io/t/apparent-cellular-connectivity-issues-across-the-fleet-for-the-fourth-day/71384)
**Author:** [@beard007](https://community.particle.io/u/beard007)\ **Replies:** 15\ **Last updated:** [May 27, 2026, 2:25am UTC](https://community.particle.io/t/apparent-cellular-connectivity-issues-across-the-fleet-for-the-fourth-day/71384 "2026-05-27T02:25:26Z")
Hi, This is our 3rd year using Particle as a paying customer with ~100 units fielded and a handful used for testing purposes. It has started on May 18th - the units (Boron 404X) started having trouble connecting to the… --- ## [My Particle Argon is stuck blinking green and never receives an IP address despite trying multiple Wi-Fi networks, resetting credentials, checking the antenna switch, and reconfiguring the device several times.](https://community.particle.io/t/my-particle-argon-is-stuck-blinking-green-and-never-receives-an-ip-address-despite-trying-multiple-wi-fi-networks-resetting-credentials-checking-the-antenna-switch-and-reconfiguring-the-device-several-times/71348)
**Author:** [@amine](https://community.particle.io/u/amine)\ **Replies:** 6\ **Last updated:** [May 14, 2026, 3:12pm UTC](https://community.particle.io/t/my-particle-argon-is-stuck-blinking-green-and-never-receives-an-ip-address-despite-trying-multiple-wi-fi-networks-resetting-credentials-checking-the-antenna-switch-and-reconfiguring-the-device-several-times/71348 "2026-05-14T15:12:35Z")
Hello everyone, I am having a persistent issue with my Particle Argon not obtaining an IP address or connecting to Wi-Fi successfully. Current behavior: The device continuously blinks green and never progresses to b… --- ## [Boron 404x bricked](https://community.particle.io/t/boron-404x-bricked/71345)
**Author:** [@Ray](https://community.particle.io/u/Ray)\ **Replies:** 8\ **Last updated:** [May 13, 2026, 1:10pm UTC](https://community.particle.io/t/boron-404x-bricked/71345 "2026-05-13T13:10:10Z")
@Particle-Tech Hi, We have a batch of Particle Boron 404x for our project. But 4 of them keep failing to connect to cloud. I used Particle doctor on them and got log files. Could you tell me a way to share the log files… --- ## [Bug report: BLE.scanWithFilter() callback overload appears unsafe in Device OS 6.3.5](https://community.particle.io/t/bug-report-ble-scanwithfilter-callback-overload-appears-unsafe-in-device-os-6-3-5/71302)
**Author:** [@jasonhenry](https://community.particle.io/u/jasonhenry)\ **Replies:** 0\ **Last updated:** [May 1, 2026, 6:03am UTC](https://community.particle.io/t/bug-report-ble-scanwithfilter-callback-overload-appears-unsafe-in-device-os-6-3-5/71302 "2026-05-01T06:03:50Z")
Platform: Particle MSOM, Device OS 6.3.5 API: BleLocalDevice::scanWithFilter(const BleScanFilter&, const BleOnScanResultStdFunction&) and the function-pointer overloads of the same. There's a problem with scanWithFilte… --- ## [B404x SOM's not connecting after setup](https://community.particle.io/t/b404x-soms-not-connecting-after-setup/71278)
**Author:** [@SammyG](https://community.particle.io/u/SammyG)\ **Replies:** 3\ **Last updated:** [April 22, 2026, 11:14pm UTC](https://community.particle.io/t/b404x-soms-not-connecting-after-setup/71278 "2026-04-22T23:14:58Z")
I have two brand new B404x's out of the box that won't connect after setup. My other B404X's are connecting no problem, so I suspect there is an issue with the setup/provisioning process. Both devices are setup via chro… --- ## [Reactivating SIM: stuck at "Updating" for hours](https://community.particle.io/t/reactivating-sim-stuck-at-updating-for-hours/71184)
**Author:** [@wileecoyoti](https://community.particle.io/u/wileecoyoti)\ **Replies:** 1\ **Last updated:** [March 27, 2026, 10:22pm UTC](https://community.particle.io/t/reactivating-sim-stuck-at-updating-for-hours/71184 "2026-03-27T22:22:54Z")
I think this is a simple support ticket thing so they can re-initiate the process but I can’t for the life of me find any way to submit a something through the useless “support an troubleshooting” tree of doom. Anyone kn… --- ## [RE-activating a deactivated Monitor One](https://community.particle.io/t/re-activating-a-deactivated-monitor-one/71133)
**Author:** [@PaulAugood](https://community.particle.io/u/PaulAugood)\ **Replies:** 4\ **Last updated:** [March 11, 2026, 6:20pm UTC](https://community.particle.io/t/re-activating-a-deactivated-monitor-one/71133 "2026-03-11T18:20:49Z")
I have a Monitor One that I purchased year+ ago for a work project that got stalled. Since that time the Device/SIM has been deactivated. I not sure how to reactivate it; I tried treating it as a new device and setting u… --- ## [NTN connectivity with M635](https://community.particle.io/t/ntn-connectivity-with-m635/70849)
**Author:** [@magchecks](https://community.particle.io/u/magchecks)\ **Replies:** 5\ **Last updated:** [February 26, 2026, 4:28am UTC](https://community.particle.io/t/ntn-connectivity-with-m635/70849 "2026-02-26T04:28:13Z")
As 2025 closes, it reminds me that I purchased a M635 in March 2024 and the NTN availability isn't getting any press. Can someone @ Particle please update us all on its progress ? --- ## [BSoM module only reachable when it sends data](https://community.particle.io/t/bsom-module-only-reachable-when-it-sends-data/71060)
**Author:** [@cjh](https://community.particle.io/u/cjh)\ **Replies:** 5\ **Last updated:** [February 25, 2026, 8:17pm UTC](https://community.particle.io/t/bsom-module-only-reachable-when-it-sends-data/71060 "2026-02-25T20:17:57Z")
Chidalgo I have a product with a B-SoM module in the field that has been working fine for many months. OS: 5.6.0 For the last several days, however, although it continues to send in status r… --- ## [LoRaWAN Blueprint Anyone Have it Working?](https://community.particle.io/t/lorawan-blueprint-anyone-have-it-working/70967)
**Author:** [@ntableman](https://community.particle.io/u/ntableman)\ **Replies:** 4\ **Last updated:** [February 14, 2026, 9:12pm UTC](https://community.particle.io/t/lorawan-blueprint-anyone-have-it-working/70967 "2026-02-14T21:12:54Z")
I have a couple Muons, mostly working fine, been making a basic temp/humid sensor with them to test all the connectivity options. I want to eventually make them communicate over LoRaWAN. I have spend a few days trying t… --- ## [Boron Cellular International](https://community.particle.io/t/boron-cellular-international/70981)
**Author:** [@dvla123](https://community.particle.io/u/dvla123)\ **Replies:** 3\ **Last updated:** [February 4, 2026, 8:09pm UTC](https://community.particle.io/t/boron-cellular-international/70981 "2026-02-04T20:09:56Z")
Hello! I was trying to dig up information and I believe I have an understanding, I would like to get confirmation if that’s the case. I was interested to know if I were to use the Boron, model BRN402, could it connect to… --- ## [Photon2 Wifi changes SSID](https://community.particle.io/t/photon2-wifi-changes-ssid/70968)
**Author:** [@louyo](https://community.particle.io/u/louyo)\ **Replies:** 2\ **Last updated:** [February 2, 2026, 12:48pm UTC](https://community.particle.io/t/photon2-wifi-changes-ssid/70968 "2026-02-02T12:48:54Z")
I set the SSID while connected via USB. When I disconnect and then connect at location, it sometimes connects to a different AP’s SSID. I don’t see a way to block (old) SSID. Can someone please send me a link to the prop… --- ## [Failed to determine server address (DNS issue B524 on DeviceOS 6.3.3)](https://community.particle.io/t/failed-to-determine-server-address-dns-issue-b524-on-deviceos-6-3-3/70671)
**Author:** [@claursen](https://community.particle.io/u/claursen)\ **Replies:** 6\ **Last updated:** [January 27, 2026, 10:46am UTC](https://community.particle.io/t/failed-to-determine-server-address-dns-issue-b524-on-deviceos-6-3-3/70671 "2026-01-27T10:46:23Z")
I have multiple times seen the following message during connection (Particle.connect) - can anybody explain what circumstances typically leads to this? 0000019266 \[system\] WARN: Failed to load session data from persiste… --- ## [Boron 3G, DeviceOS 6.3.4, periodic 3G modem freezes and lose of connection. ERROR: The other end has not replied to keep alives (TESTs) 5 times](https://community.particle.io/t/boron-3g-deviceos-6-3-4-periodic-3g-modem-freezes-and-lose-of-connection-error-the-other-end-has-not-replied-to-keep-alives-tests-5-times/70934)
**Author:** [@abovyan](https://community.particle.io/u/abovyan)\ **Replies:** 4\ **Last updated:** [January 23, 2026, 2:09pm UTC](https://community.particle.io/t/boron-3g-deviceos-6-3-4-periodic-3g-modem-freezes-and-lose-of-connection-error-the-other-end-has-not-replied-to-keep-alives-tests-5-times/70934 "2026-01-23T14:09:47Z")
Hi everybody! Recently I started getting this errors on two Borons. Looking at the empty project trace I see that it is not a application software problem. The firmware does 1 sec periodic check of RSI only. As I can se… --- ## [E-series Modules Dropping Offline](https://community.particle.io/t/e-series-modules-dropping-offline/70929)
**Author:** [@grantWTI](https://community.particle.io/u/grantWTI)\ **Replies:** 3\ **Last updated:** [January 21, 2026, 3:06pm UTC](https://community.particle.io/t/e-series-modules-dropping-offline/70929 "2026-01-21T15:06:49Z")
Hello! This is a bit of a long shot, but thought I would post here in addition to reaching out to support, in case others are also seeing something similar. We have a fleet of a few hundred devices that have been in op… --- ## [Possible Wifi Listening Loop Error](https://community.particle.io/t/possible-wifi-listening-loop-error/70927)
**Author:** [@Janice](https://community.particle.io/u/Janice)\ **Replies:** 2\ **Last updated:** [January 20, 2026, 3:39pm UTC](https://community.particle.io/t/possible-wifi-listening-loop-error/70927 "2026-01-20T15:39:00Z")
Our team is currently trying to troubleshoot why a few of our Muon/M404 devices (dual radio (Wi-Fi/cellular)) keep going offline and getting stuck in what seems to be "listening mode” for Wi-Fi. Every 15 minutes or so, a… --- ## [Tachyon WiFi not working](https://community.particle.io/t/tachyon-wifi-not-working/70865)
**Author:** [@Tct](https://community.particle.io/u/Tct)\ **Replies:** 5\ **Last updated:** [January 14, 2026, 4:04pm UTC](https://community.particle.io/t/tachyon-wifi-not-working/70865 "2026-01-14T16:04:45Z")
Hello, I am was working on a tachyon today and I was able to get it to connect to WiFi, but the little icon in the corner was a question mark WiFi symbol and the tachyon would not get any responses when pinging websites… --- ## [Switching fleet leads to connectivity issues (encryption issue)](https://community.particle.io/t/switching-fleet-leads-to-connectivity-issues-encryption-issue/70910)
**Author:** [@edison\_vs\_tesla](https://community.particle.io/u/edison_vs_tesla)\ **Replies:** 2\ **Last updated:** [January 13, 2026, 4:37am UTC](https://community.particle.io/t/switching-fleet-leads-to-connectivity-issues-encryption-issue/70910 "2026-01-13T04:37:52Z")
Hey, I've been trying to move some MSOM devices over to a new fleet. I was able to move the device over and it shows as online for a brief time, but goes offline again. Re-configuring the device with setup.particle.io a… [Next page](https://community.particle.io/c/connectivity/49.md?page=1)