Help Lost mobile data(LTE) after factory reset, S4 mini

[Coug]

I performed a factory reset on my S4 mini. I backed up the data that I needed and removed the SD card. I didn't think about and forgot to remove the sim card(not sure this is even mandatory during a factory reset). Everything seems back to normal now except I can't get mobile data(LTE) even when I manually turn on mobile data in settings. I tried soft resetting the phone(removing battery), I tried to remove and then replace the sim card and that didn't seem to fix it. It sees the sim card and I get no errors from the phone but I've got no LTE data.

Am I simply missing something in the settings or will I be buying a new sim card tomorrow?

 

[Slug]

Check in Settings/Wireless & networks/Mobile network that you have valid entries in Access Point Names.

 

[Coug]

Ok, so I found my carriers APN settings and entered them in.

https://www.cricketwireless.com/sup...ice-byod/customer/bring-your-own-android.html

After a reboot I've got the LTE indicator back, I can now surf the internet on mobile but I still can't download text messages containing data(photos, videos, etc.), but I can still send and receive regular text messages.

 

[Coug]

Apparently the MMSC and the MMS Proxy were incorrect on the website. I wouldn't have known this without going to the store today to have them look.

On the site it's listed as:
MMSC: http://mmsc.cricketwireless.net
MMS Proxy: proxy.cricketwireless.net

The correct one should have been
MMSC: http://mmsc.aiowireless.net
MMS Proxy: proxy.aiowireless.net

Cricket was bought out by AT&T last year and they've rolled all their customers over to AT&T's GSM/LTE network. For whatever reason they chose the aiowireless.net url as their MMS system.

Thanks for helping me troubleshoot that Slug!