Where is the NFC chip? - Nexus 7 Q&A, Help & Troubleshooting

I just tried to pay with my nexus 7 and felt like an idiot because I didn't know where to tap it.
Also anyone know a relatively inexpensive way to trade my 16gb version for the 3g version.
Sent from my Nexus 7 using xda app-developers app

I bought a couple of meals at McDonalds to use the $10 credit using NFC with Wallet. I touched the top, back of the N7 to the sensor and a receipt spit out. The second time I had to tap it a couple of times to get it to take. Just remember to open Wallet first and choose your payment method, i.e., Google credit or debit or credit card. I think the Google credit is no longer available.

The NFC antenna is on the back of the case. It's a rectangular "frame" with the NEXUS on the case at the bottom of the "picture" and the top about one inch above NEXUS.

I never used a device with a NFC. In order to pay by NFC using Google wallet. Do you need a active internet connection?
Sent from my Nexus 7.

2kbandit said:
I never used a device with a NFC. In order to pay by NFC using Google wallet. Do you need a active internet connection?
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Once I got Wallet set up back in Sept or Oct and got my debit/credit cards entered and had my Google Wallet credit available I found I did not need an active internet connection to use NFC to pay with Wallet. Now that the credit has expired (I think) I just make sure one of my cards is selected as the payment type. So, if you go to pay for something with Wallet/NFC, all you have to do is open Wallet, enter your pin, make sure your desired card is selected, and tap the reader. It just works without an active connection. The transaction is authorized at the terminal and the selected card is subsequently charged later behind the scenes. So, I repeat, no active internet connection is required if you have previously set up Wallet.

Thanks for the answer.
Sent from my Nexus 7.

Exactly. The NFC just transfers your card number to the machine like when you swipe your card. Then the machine uses the internet to verify and charge.
Sent from my Nexus 7 using xda app-developers app

Related

Google Wallet

I have Google Wallet on my Galaxy Nexus, and wanted to add the same card to my Nexus 7. Whenever I try to add the card, I get a message telling me to carefully review my information because somehting is incorrect. I called Citi and had them verify all the information on my account was correct and that they haven't sent me a new card or canceled mine without me knowing. According to the customer service agent, everything is correct. I am currently on hold waiting for Nexus customer support (about 15 minutes into the wait right now) but was wondering if anyone has had any issues or knows of anyone that may have had issues with doing this.
Edit to add:
Got in touch with someone (1h11m wait) and was told that you can only use 1 device per card and that if I want to use the same Citi card with Wallet on the Nexus 7, I have to disable it in the Galaxy Nexus first.

Does Google Wallet need wifi?

This thought just occured to me. If i go to a store or im in a cab and use the nfc, i know it will pick it up, but doesnt it need internet to communicate to google servers in order to do the transfer? its a wifi only device and yes i know you can tether, but just seems weird.
I don't have personal experience in this matter but I have read you only need wifi to setup the Wallet. Once the setup is complete, you can use it without wifi.
Unless I am mistaken it stores the information that would be normally stored on a physical card on your device so that it doesn't need a connection. When you go to make a purchase it then uses the nfc to transmit the data in someway, "swiping" the card.
But I'm not exactly sure. It makes the most sense to do it that way though.
Sent from my Nexus 7 using xda app-developers app
the few times i have used wallet on my phone it seems to go out on the network to update the balance. I assume it works like a credit card though and the machine you tap your phone to does the credit check to the account so i would guess is not necessary. I'd try it Monday but I'll probably forget. We have vending machines at work with paypass terminals.
Hello!
After confirming from google, the Wallet app doesn't need WiFi or any data connection to pay at a paypass location since all it does is send card info over NFC. However, it does need wifi to update your balance and transaction list.
Used it today at cvs, does not need wifi
Sent from my Nexus 7 using xda app-developers app

[Q] Nexus 4 Bad Sim? Won't save APN

I am wondering if I have a BAD Sim card...
I ordered a T-Mobile Sim from Straight Talk for my Nexus 4 and what they sent was a mini-sim... I need a Micro Sim.
I carefully cut it and it fits... I didn't cut any of the gold area.
When I try to create an APN it won't save it...
Turn off and on the phone at it will show up when you turn it on again... Trust me
Sent from my Nexus 4 using xda app-developers app
List to him ^
Wowzers. I was too lazy to cut my own sim into a micro sim. I called up t mobile, and they said they don't cut them. Called some sketchy wireless mobile repair store near me, bargained them down from $10 to $5 pretty easily. He mentioned the tool was for cutting iphone 4s microsims, but I told him it was not device specific (and was correct). He cut it in a matter of seconds. He gave me the old sim card exterior to use as an adapter - no need to order one from amazon. The cut wasn't the cleanest, there a minor lip on one of the edges (this is only painful when trying to use your ghetto-rigged microsim skeleton adapter, fits perfectly fine into the LG Nexus 4 ).
Thought I had conquered the beast. Went home to look up my apn settings specific to Tmobile. Luckily XDA had that covered. By the way, if you are fresh new to 4.2 like I was, you have to bring the Settings screen down with 2 fingers. I tried to enter the apn settings and then save... nothing would save! I tried resetting to default (the phone came unlocked with no apn settings, gotta try every solution once just to make sure it doesn't work ). Googled the problem. Everyone was convinced that the solution was to hit "back" or "home", neither of which worked for me. I downloaded an app called Gigagiffapn, which apparently would have solved my problem only if I had an Android version less than 4. No luck.
Stuck my sim back into my "adapater" and plugged into my nokia phone. Had to check if the sim card was damaged, as I hadn't made a call since the cut. It worked. Stuck sim back into Nexus 4. Voila! Rebooted with 3 of the different apn settings I provided, and it automatically selected one of the correct ones.
Then I found this article, and you're saying "... Trust me." I'm assuming you went through the pain somewhat similar to me, minus perhaps fearing a damaged sim card.
Sparta507 said:
Turn off and on the phone at it will show up when you turn it on again... Trust me
Sent from my Nexus 4 using xda app-developers app
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[Q] Reproduce NFC?

Is it possible to read an NFC tag, for example one that lets me enter a hotel room, and then reproduce the signal to be read by another NFC reader?
For example, I read an NFC tag that lets me into my hotel and store the data on the Android device. I then tap my device (not the card) against the NFC reader on the hotel room door and the device sends the data that was on the card, and the door opens.
If so, what program allows me to do this? I've tried downloading a few random ones but haven't found this functionality and am beginning to doubt it's possible.
No, the N7 can read and write tags but not emulate one. The best you could do might be to copy data from one tag to another and use that.
Or even better, I tap your access card against my tablet and store your hotel room access info and wait for you to go out and then enter your room.
I think you may struggle to find something openly available that would allow you to clone NFC tags so simply, though in theory it may be possible
Sent from my Nexus 7 using xda premium

[Q] HCE?

Hi,
I've read that KitKat brings Host Card Emulation. Do I understand it rignt that I can record any wireless card into my phone and later use my phone exactly as I would use that card? (credit card, tesco benefit card, door card etc.?)
I know I can connect google wallet with US credit card and pay with it, but this is for US only (I'm from Europe) and payments go through wallet account etc.
I would like to use it just as card emulator. Can someone please tell me, how to achieve this?
Is google wallet app necessary (because I struggle a little with country check).
I've tried to search but I couldn't find any usable informations, only discussions that HCE is enabled only for Broadcom NFC chips (which N4 has, so I presume it sould work on N4)
Thanks for any usable info
http://www.xda-developers.com/android/google-wallet-updated-with-kitkat-nfc-host-card-emulation/
I think it doesnt work without Google Wallet but I could be wrong.
We have a NFC hack section on xda..
Sent from my Nexus 4, while driving in my Evo9.

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