Current Info regarding com.sec.sprextension.phoneinfo.DeviceAdminPhoneInf oReceiver
I have talked with SEVERAL levels of tech support at Sprint... the first person admitted that she couldn't help me, but that it sounded suspicious. She then sent me to a dude who actually said that I "... am too deep into the phone. Most people don't get that deep into the settings." I explained that just installing Lookout and /or Carbonite Mobile will ask you to go to SETTINGS - SECURITY - DEVICE ADMINISTRATORS... it's only the second level once you're in settings. I also explained that this can NOT be disabled, that it says it can activate the microphone and camera without my knowledge and when the device appears to be off. This to me is NOT COOL. He then actually said... "Oh, so this is a conspiracy?" Conspiracy? WTF? I am only asking him if it is a SPRINT App. If it is, I would tend to let it go, but if he could NOT tell me that it was a SPRINT app, I DO NOT trust it. After getting past this pin-head, I spoke to a guy name Keith, who instantly said that he would not want that on his phone. Great Answer! we then spent 140 minutes talking, while he was getting other, higher level tech involved.
The final answer was "It IS NOT A SPRINT APP, WE NEED TO GET THAT OFF OF YOUR PHONE". He then deirected me to to a factory reset similar to what emoge (Liz) described. However, he strongly advised me to remove the SD card before proceeding. When I got the to point to push the button, the screen warns you that "The encryption key for the SD card will be deleted and you will not be able to access files on the card" (paraphrasing, but very close). He could not tell me for certain that I would be able to use my backed up info on my SD card and recommended that I either back up to the cloud (Dropbox or similar), or that I take the phone to a tech center and have them do it.
As of 11-18-12 at 12:40 am, I have not done that yet, as I am waiting for a response from Lookout as to whether or not they show this as Malware or similar. The Lookout scan does not catch it, which makes me feel comfortable, but I spent days studying this and hours with SPRINT tech support and I DO NOT TRUST THIS DEVICE ADMINISTRATOR or whatever it is.
btw, I had to change my screen font to see the entire file name, which is precisely "com.sec.sprextension.phoneinfo.DeviceAdminPhoneIn foReceiver" all caps are intentional. I can see that there are several people asking this same question, and as far as I can tell so far, the information I have just provided is the most complete to date. But I am not done yet. I want to know who owns this app, and why it's on my phone.
Updates to follow.
There is another discussion on this that I found in the search that lead me to this thread, on xda-developers:
[Q] com.sec.sprextension.phoneinfo.deviceAdminPhoneInf oReciever - xda-developers essentially claiming it seems to have been put on the phone by Sprint but doesn't know what it does or why it needs all those permissions.
I would like to know more about it, too.
I don't know why the forum ads a space to the message title. Perhaps a character limit, but I think it may limit search results including this page if the full name of the app is used in searches.