There might be other issues in your code that cause this.
Rapid cyan means that the connection to the cloud dropped out, which can be due to starving the system tasks of µC time.
Rapid green means that you even lost connection to the cell towers and these need to be reestablished.
Seeing your code might help locate possible causes for this behaviour.
@tcontrada, that line will essentially block until Particle.connected() becomes true, ie you have cloud connection, or 300,000ms (5 minutes) elapses. The 5 minutes is the recommended time for waiting on an Electron to connect. Any shorter and it might not have time to finish the process.
I would see particle connect times range all over the place from almost instantly to min’s before connecting. There is no rime or reason to it.
The Electron will automatically reset the Modem if it does not connect in 10 mins if I remember correctly.
The quickest reconnection times I have seen is pushing data to Ubidots via their UDP / MQTT library. As long as your sending the data within the 23 min ping times where no reconnection process needed then my Electron would wake up, send data to Ubidots, and then back to sleep in like 1 to 2 seconds. When Particle Publishing it would usually be longer and sometimes much much longer for some reason.
@tcontrada once you have this up and running smoothly it would be nice to confirm that the a 20 min KeepAlive on the ATT IOT data plan is a solid keep alive number since it’s really close to Particles 23 min KeepAlive Ping rates.
I don’t think Blynk uses the Particle cloud as transport, so you should be good without it.
If you don’t use any of the Particle features (including OTA updates) you can opt for SYSTEM_MODE(SEMI_AUTOMATIC) (or MANUAL) and only call Cellular.connect() and wait for Cellular.ready() but currently you need to keep this issue in mind
I don’t think the naked Electron is available for sale.
But you’d need the LiPo and an antenna anyway and you won’t save a lot on the breadboard, the cable and the few components of the Dev Kit.
So I’d just go for the Dev Kit.