I removed my first post, which basically reiterated what the OP's links pointed to (unlockit on Airvoice's site). Apologies.
When I first started using unlockit, Airvoice didn't know anything about it and I rarely look at their terrible website.
I think this thread exists because removing the old profile first is was necessary on iOS 9, and/or the unlockit dev was making changes in the past couple of days (as mentioned on his site).
Do we really think the issue was fixed by Airvoice? Hmmm.
It's amazing that unlockit is the "official" way Airvoice recommend to get data going (do they pay that dev anything?!)... and the SIM card swap is mentioned on the Airvoice site as well for iOS 7 and below <cringe>
This stuff really makes them seem like a two-bit outfit (thankfully cheap, by US standards). I guess MVNO's are hamstrung by AT&T on purpose?
For the record, I just tried the old T-mobile SIM swap trick on iOS 9 (wastin' time on a Friday :). It's a total no-go, even with multiple reboots etc etc.
I agree with FuriousE that Apple Configurator won't do MMS, it allows you to deal out configuration profiles to phones (just like unlockit is doing):
https://help.apple.com/profilemanager/mac/4.2/#/apd5BD57F16-A2BF-43B9-AB4B-24948FB52C1Eand there is zero mention of MMS in the configuration profile specs:
https://developer.apple.com/library/ios/featuredarticles/iPhoneConfigurationProfileRef/iPhoneConfigurationProfileRef.pdfThe unlockit dev also mentions that he is unable to add MMS to his profiles in several places, e.g. here:
https://www.unlockit.co.nz/unlockit/?p=679... and here:
https://www.unlockit.co.nz/unlockit/?p=788... which links to a petition (FuriousE take note - did you sign this yet? ;) here:
https://www.change.org/p/apple-the-ability-for-third-parties-to-set-mms-settings-via-mobileconfig-filesAirvoice basically admit there is no way to get MMS working on an iPhone in their FAQ (in a roundabout way of course), here:
https://www.airvoicewireless.com/FAQ.aspxQuote:
"Talk, Text and Web are supported features with our service when using an iPhone. MMS is NOT a guaranteed feature when using an iPhone with Airvoice. If you would like to use this feature, the device will need to be fully UNLOCKED. Airvoice still does not guarantee that MMS will work with an iPhone even if the device is unlocked."One last point is that this Apple support post (only 7 months since last edit, so definitely post-iOS 7) indicates you can access the ol' Cellular Data Settings "if your carrier allows it":
https://support.apple.com/en-us/HT201699That might indicate there are SIM cards from other carriers around that would work in place of the T-mobile ones originally recommended in the SIM swap method. Maybe.
Just a thought.