Nexus 7 wifi internet connection issueThe solution to the Nexus 7 internet connection problem is fast and simple » You may skip to the bottom for the instant fix » If you're interested in my experience, read on, but the answer to your problem is below »
I decided to surprise my wife with a Nexus 7. I had set up a gmail account for her long ago but she rarely accessed it. The day I brought home the tablet, she told me about a friend showing her a Kindle, a competitive tablet. My wife was finally open and interested in internet connectivity.
Turning on her Nexus 7 and adding her Google account was easy and worked flawlessly. The 7" tablet is the perfect size device for gmail, managing other online email, watching youtube, reading books, listening to music, reading magazines, accessing facebook or whatever social media you subscribe to. She is most interested in Pinterest. The internet connection was fast, even on wifi with older slower routers.
My wife recognized the value and realized how much I liked "her" tablet and bought me one for my birthday. We can now video chat or "hangout" as it's labeled in Google+. They both were fast on the internet and exceeded my expectations.
Overnight, the internet connection at my home which was initially fast on the tablet, changed to intermittently on/off and when it was connected the signal was too weak for a YouTube video to play. My first assumption was the problem was my own hardware or router software. I upgraded my router firmware and rebooted everything. I searched Android forums for tips to fix my internet connection. I researched router settings. As I read the comments I saw that some people had returned their Nexus 7 to Google because of internet connection issues. I thought, "I like this thing, I just want it to work like when it was new. What changed?" I found Google recently upgraded Jellybean to 4.2.1.
I tested my Nexus 7 in my office at Select Homes, Inc. where it has fantastic possibilities to register people who come in to look at homes, look at their land on Google Maps, show them videos of homes on other locations and much more. No connection unless I stood in the same room as the router.
For lunch I went to a public hotspot to test my tablet, Bistro42, a great restaurant close to my home and office where there is a secure wifi to test the Nexus 7. I could see the internet available and my Nexus 7 attempted connection, then I would see "obtaining IP address." I was never able to connect yet my laptop easily connects at Bistro Forty-Two.
I concluded Jellybean 4.2.1 upgrade caused the issue, Google would soon discover and fix it. I watched for an upgrade only to see "unable to connect to the Internet" repeatedly.
Just imagine you're ready to press Buy Now » on Justin Bieber meet and greet tickets or the Rolling Stones tickets to the Barclay Center or Taylor Swift meet and greet tickets and you see lost Internet connection. Then it comes back just long enough to see that there are two tickets left and you scramble to tap and buy only to lose Internet connection again. Your device reconnects again to see "sorry tickets are sold out for this event." What if you were renting the last Super Bowl suite available for your boss? This on the latest state of the art internet device by GOOGLE. I knew if this tablet was to be used for anything important, it must have a consistant internet connection at many different locations.
I clicked Settings to see if I could recognize any setting different than when I first turned my tablet on. I found a little check box next to NFC in the WIRELESS & NETWORKS settings. You must click More... to see the selection. I didn't know what NFC is and "Googled" it (on my laptop) to find it was for "touch device to transfer". I didn't need that so I turned it off. As Emeril says, "Bam!" It connected instantly, stayed on and works better than ever.
Solution to fix Nexus 7 internet connection issue
The solution to fix the Nexus 7 internet connection issue is ridiculously simple:
Turn off NFC. It is checked "on" by default.
Turn off NFC. It is checked "on" by default.
With the Jellybean 4.2.1 update, NFC is turned on by default. De-selecting it instantly fixed my internet connection problem. Yesterday I couldn't connect in my office 20 feet from my router. This morning I connected to my office router 50 yds. out in the parking lot and was able to view youtube, "Hangout" with my wife and search Google.