Several E-Series devices failing to connect

Connectivity Cellular
1

I have several devices that go through the following sequence:

  • Breathing white (other internal processes before connecting)
  • move to breathing blue (which I believe is cellular/sim related?)
  • eventually give up, go back to sleep (my code dictates this after 60 seconds of failure)

What they should be doing, and many other devices with the same code/version correctly do:

  • Breath white
  • Flash green
  • strobe cyan
  • breath cyan (connected, doing their thing)
  • disconnect and go back to sleep.

What’s possibly different on these devices is that they are ~5 from a batch of 15 that were offline/battery disconnected from around 3/6 or 3/7 and were reconnected yesterday. I’ve let them cycle quite a few times hoping it was just network provisioning, but no such luck in rehabilitating. Code worked (and has been untouched) 3/6-3/7 prior, in most cases for months. Others from same batch fired back up after their disconnect without issue.

Note: these are all manual mode devices.

Any ideas why these might be different?

2

Can you try running one of these devices with a clean build of Tinker to see if it connects?

If not - run this: https://github.com/rickkas7/electron-clouddebug
And attach a few minutes of logs.
You can investigate the logs yourself too by referring to: https://support.particle.io/hc/en-us/articles/360044518213-Troubleshooting-Cellular-Connectivity

3

clouddebug: press letter corresponding to the command
a - enter APN for 3rd-party SIM card
k - set keep-alive value
c - show carriers at this location
t - run normal tests (occurs automatically after 10 seconds)
or tap the MODE button once to show carriers
starting tests…
turning cellular on…
deviceID=((hidden))
manufacturer=
model=
firmware version=
ordering code=
IMEI=
IMSI=
ICCID=
0000135436 [app] INFO: enabling trace logging
attempting to connect to the cellular network…
0000135436 [system] INFO: Sim not inserted? Detecting…
0000135436 [system] INFO: Sim not inserted? Detecting…

[ Modem::powerOn ] = = = = = = = = = = = = = =
135.746 AT send 4 “AT\r\n”
137.057 AT send 4 “AT\r\n”
138.368 AT send 4 “AT\r\n”
139.679 AT send 4 “AT\r\n”
140.990 AT send 4 “AT\r\n”
142.303 AT send 4 “AT\r\n”
143.614 AT send 4 “AT\r\n”
144.925 AT send 4 “AT\r\n”
146.236 AT send 4 “AT\r\n”
147.547 AT send 4 “AT\r\n”
[ Modem reset ]
158.858 AT send 4 “AT\r\n”
160.169 AT send 4 “AT\r\n”
161.482 AT send 4 “AT\r\n”
162.793 AT send 4 “AT\r\n”
164.104 AT send 4 “AT\r\n”
165.415 AT send 4 “AT\r\n”
166.726 AT send 4 “AT\r\n”
168.037 AT send 4 “AT\r\n”
169.348 AT send 4 “AT\r\n”
170.659 AT send 4 “AT\r\n”
[ No Reply from Modem ]

171.861 AT send 6 “ATE0\r\n”
0000181863 [system] INFO: Sim not inserted.
0000181863 [system] INFO: Sim not inserted.

[ Modem::resume ] = = = = = = = = = = = = = = =

4

So I am taking that to mean the modem is dead and/or the SIM gave up the ghost?

Seems odd that it would happen with several of them all at once…must be something more to this…