There are far too many threads from users with data issues. It's time to put an end to the madness. This will be the place to go if you're having problems! The causes: There are many things that might cause broken data. There are also many things that cannot, or don't. The data loss and baseband version error has been going on since April of this year, if not before. What is not causing your issue includes: Basix or Exodus. Neither custom ROM modifies anything related to data connections. Do not suggest either is the issue. The app you just installed, unless you told it to, or it is designed to Rooting CWM Assorted pieces of magic fail dust. What could cause your problem: Bad Odin flash You flashed something from another device, or that is not explicitly marked as being for the Indulge (R910 or R915) Metro/Cricket is down in your area Random failure (most common) OTA update from Metro The existing bug in Samsung's software that was alleviated, but not fixed The symptoms: The most obvious symptom, of course, is that you can't access mobile data. However, the signs that it's a little more than temporary include: When WiFi is disconnected, there is no 1X/3G/4G icon Your CDMA baseband in Settings > About Phone is "unknown" Your LTE baseband in Settings > About Phone is "unknown" If you see these, you have a problem. The fixes: YOU MUST TRY THESE FIRST. Do these steps in order, one at a time - each may solve your problem. Note that if your problem seems to occur after you flash a ROM or restore a backup, do the ENTIRE PROCESS before flashing, and don't restore until you've tested. Reboot your phone Boot into CWM (or stock recovery) and wipe cache (main menu) and dalvik-cache (under Advanced) Do a Factory Reset (three times!) in CWM, and reflash the ROM if applicable Do the above, then Odin your device Format your SD card, then do the above, and redownload your ROM of choice from a secondary mirror (if applicable) before flashing Only after you have done each and every one of the steps above should you post here or join the IRC channel!