Reporting success…
I ordered a Hologram SIM, which I installed yesterday.
The OVMS was getting no signal (using H2O on the AT&T network) so I didn’t even bother trying to do the SMS “GPRS hologram” command via H2O/AT&T.
I installed the new Hologram SIM and attempted to send the SMS “GPRS hologram” command via the Hologram dashboard. No luck. Despite putting in my registered phone number as the “from number”, it didn’t work. I tried seven times. No acknowledgements came through to my registered phone number, and no settings were changed. (My registered phone number happens to be my Google Voice number. I don’t know if that would make a difference.) I got seven “Permission denied” messages in my Hologram dashboard data logs (presumably SMS replies from the OVMS module itself) and it used up $1.33 of my initial $5 credit.
I put the H2O SIM back in and waited, hoping it would catch a signal. In recent months it has worked intermittently, but only early in the monings. This morning it did have a wireless signal, so I quickly sent it the SMS “GPRS hologram” command, swapped back to the Hologram SIM, and now it is working.
It appears, for me at least, that configuring via the Hologram dashboard was not working. Some of the SMS commands have the option of using the OVMS Module Password to authorize them, but not the “GPRS” command. So it has to be sent from the device’s registered phone number, which I couldn’t get the Hologram dashboard to do.
So it was lucky for me that I made the switch while I still had some intermittent H2O/AT&T connectivity left. I’m glad I didn’t wait until the H2O/AT&T connectivity was completely shut down.
One thing I did discover: In the Hologram dashboard under “CONNECTION INFO” for the SIM it says “apn.konekt.io (no user, no pw)”. However, I can confirm that for me “GPRS hologram” worked too. Apparently both are valid, according to
this support article.
Previously I was paying $3.50/month on H2O. This new Hologram service looks like it might work out at something closer to $1/mo.