I have had a Cisco DPC3825 for about 8 months now and for the past two months the iPads in the house tend to spontaneously loose the WiFi connection. Sometimes it's after a few minutes and sometimes it's after half an hour. No problem getting it back, simply go to iPad WiFi setting and select my wireless SSID and it connects no problem or I can simply turn the iPad off and then back on again and it automatically reconnects and works fine again for another few minutes or so.
I've scanned the spectrum and I am the strongest WiFi signal by about 30dB. My wireless type used is WPA2-Personal.
Also I will mention that on of my iPads is used for work, so when I am at the office, it never looses WiFi (ever). So I assume then it's not an iPad issue.
Sadly, it is likely the 3825 wireless which is causing the issue.
These gateways, are notorious for droping wireless connections, and having poor range
What MOST people do, is disable the wireless in them, and put the gateway in to bridged mode, and add their own 3rd party router. They then tend not to have the wireless drops, and better range. (alternatively, you can just turn the wireless off.. and just add a wireless router as an access point only, works as well)
The strange thing is that it only seems to affect my iPads. iPhones seem to be fine and laptop I also never drops a connection. It seems it almost started when one of the iOS updates happened but the iPhones and iPads were both updated with the same version albeit they are different hardware. Before two months ago it seemed to work flawlessly having never dropped the wireless on the iPads.
Both iPads are running the latest iOS which is 6.0.1. I haven't seen the 6.0.2 that you are talking about. Is this something that's coming out soon? Is this related to the problem i am seeing. Appreciate the help. tB