If you're on a custom rom and have tried setting up your phone as per the instructions they give you you probably have come across a few issues that forced you to go back to a stock rom. I can't guarantee this will work for your phone or rom, nor can i guarantee that these options are even available to you, but this should work most people!
These shortcuts should let you bypass MSL modem errors ("Modem exception occurs"), as well as give you access to the Update PRL and Update Profile options that can no longer be found in settings.
Note that these are all *activity shortcuts *(long press on an empty spot on a homescreen, select shortcuts, then select activities). I don't have a list of what all launchers have the activities option, but if in doubt use Nova Launcher. Although it may not be necessary it is best to restart your device after each step.
Also note that there are options in the activity shortcuts that can do things you don't want, such as factory reset your phone. PROCEED WITH CAUTION!! IF YOU SCREW SOMETHING UP IT ISN'T MY FAULT; THESE OPTIONS ARE HIDDEN FOR A REASON!!!
- Carrier wipe
- System update
you're on a custom rom, skip this ;)
- Profile Update
activities>SystemUpdateUI. launch the shortcut and select Update Profile
- PRL Update
activities>SystemUpdateUI. launch the shortcut and select Update PRL
- Picture Messaging Settings
activites>com.android.sprintmenu>MMSC. _Set address to http://mms.plspictures.com _(this should also update/overwrite all your apn settings)
- Wimax (non lte 4g)
activities>WimaxHiddenMenu>REAL. set your realm address to mnvo102.sprintpcs.com