# Electron 3rd-party SIM tips **URL:** \ **Category:** Tutorials\ **Created:** [October 12, 2016, 11:22am UTC](https://community.particle.io/t/electron-3rd-party-sim-tips/26490 "2016-10-12T11:22:28Z")\ **Posts on this page:** 1\ **Showing post:** 19
**Author:** ![ColinVT](https://avatars.discourse-cdn.com/v4/letter/c/a5b964/32.png) [@ColinVT](https://community.particle.io/u/ColinVT)\ **Post date:** [May 1, 2019, 2:04pm UTC](https://community.particle.io/t/electron-3rd-party-sim-tips/26490/19 "2019-05-01T14:04:30Z")
Sorry, I thought I had already mentioned this, I am using this for setting up of the cell credentials: > [@Dynamic 3rd party SIM card APN Credentials from SIM card IMSI](https://community.particle.io/t/dynamic-3rd-party-sim-card-apn-credentials-from-sim-card-imsi/31911): > > I wrote a test program that should serve as a good building block for anyone who is looking to use 3rd party sim cards and particle sim cards, and have many potential networks that they will be connecting to. This program programatically parses the IMSI on the SIM card that is currently inserted into the Electron, determines the MCC and MNC based on the IMSI and the length of the MNC portion of the IMSI. It then determines which cellular APN credentials and keepAlive to use based on the SIM ca… However this issue is still present if I completely cut out that portion, and just set the exact cell credentials in STARTUP() as described in the electron's docs. The workaround I have been using is working fine and this is not a priority whatsoever at this point as I've adapted our firmware for use on the Boron and Argon which we will be moving toward in the near future (and I do not have this issue using the same order of functions on the boron). Anyways, the reason I say this is that I don't want people spending time and brainpower helping me with this since it's more of just a minor nuisance to me when other people probably have far more pressing issues (and as it doesn't seem to be impacting anyone else, its likely some wonky thing I'm causing inadvertently). --- _[View the full topic](https://community.particle.io/t/electron-3rd-party-sim-tips/26490)._