PDP authentication problem
Thank you for this "historical" thread, it helped me yesterday to understand the problem.
Of course it is a matter of personal choice but I would suggest other people who are experiencing the PDP authentication message (see picture at
http://www.flickr.com/photos/mblongo/4637895457/) to report it to their legitimate carrier because I am afraid it can be a signal that something wrong is going on within the network you are using, not just with your own mobile.
I noticed the "PDP authentication" message on my O2 (absolutely authentic) iPhone at least four or five times during the last year and usually I solved the problem resetting the mobile several times or simply forgetting the problem for a little while (bottlenecks on internet connections have always been an obvious thing).
I have also noticed that this problem happened when I rarely received SMS from my mother or my brother (who are both using Vodafone numbers in Italy and I am sure they are on legitimate not cracked devices too) or other contacts of mine: this is particularly annoying because if you notice technical problems calling a number you tend to associate the problems with the person who owns that number or with the content / situation or context of the communication, not with the network or the device or the software that enables you to that communication: it takes you a precise act of judgment and evaluation to distinguish the two.
Yesterday morning I got that PDP auth message when I was in London but the internet connection was not available since the day before when I was in Oxford (hilarious enough, I was attending an event at the Oxford Internet Institute about securing the Web and distributed networks). This persistency of connectivity problems for more than 12 hours on two different locations with the same carrier is a really unusual situation these days.
Besides, I really needed the internet connection on the mobile yesterday morning because I was in an emergency: my wallet had been stolen on Sunday, I had to go back and forth offices in finishing to report the fact to the consulat, authorities etc etc and checking the status of other transactions related to payments due within fixed deadlines. So I was in a really weak situation, still without documents, risking further isolation and losing control on legal obligations. Therefore the connection on my mobile was important more than the other times and I rang the O2 asking to check the problem: I presume they controlled and cross referenced identity and authenticity evidences and several personal data because after few moments the Internet connection was back on the mobile.
So all in all, I would say that it is really important not to underestimate the risk that your mobile connection has been hacked when you see that message or other similar inconsistency related to the authentication matter.
Brunella Longo