I have been receiving this notification frequently on my unlocked LG Nexus 4, along with a similar one saying "Restricted access changed - All voice services are blocked." Could someone help me solve this? I tried various things to fix it: factory reset, changing the default mobile network from GSM/WCDMA to WCDMA only, numerous reboots, replacing the SIM card, etc. But no luck.
This started on August 1st (almost 6 weeks ago) when I returned to USA from Europe, and it only occurs when I am at or near my home. It runs the battery, makes calls and texts unavailable at times, and most of all is SUPER ANNOYING. I was convinced that when I did the factory reset (finally got around to backing everything up yesterday) that it would solve the problem but sadly, it did not. I am very frustrated. I have researched several threads regarding this issue, but most end without really explaining a solution. My assumption is that the phones are the problem and those users swapped for a different phone, but I'm just guessing. I plan to go to the tmobile store today and maybe see if my sim card works in another phone, but the problem again is that this only occurs when I am in a certain area, i.e. my home. I don't have another unlocked phone I can test this on, so I'm running out of answers.