The Nexus 7 tablet offers the feature of NFC (and Google Beam) to transfer files with other NFC enabled device by putting them together.
In one of my previous posts, I included a photo of the inner side of the Nexus 7's back cover, it shows the antenna for NFC, it is located in the upper center part.
Because the size of the Nexus 7 tablet and the position and size of the NFC antenna, and these physical settings in other devices used to NFC (Google Beam) with Nexus 7, I found that it would make user try several times to find the correct position for the two devices to do a successful NFC transaction.
I used HTC One X (quad-core model) in my test. I tried several times to find the proper position to align these 2 devices back to back to make a successful NFC connection.
Since HTC One X is uni-body in design, it could not be open easily to find the position of its NFC antenna, so I do not know where the antenna is located on the back cover of HTC One.
Fortunately if there is a successful NFC connection, HTC One X would make a sound, so it did not take me several tries to find that out, I just slide the HTC One X on the back of Nexus 7, and quickly found out the antenna of HTC One X is fixed in the lower part of the phone back cover.
So you can imagine how it would look like when the two devices align well to make a successful NFC connection. The smaller device HTC One X sticks out of the upper edge of Nexus 7, and they need to be in the position of back to back. In the position of side-by-side, NFC connection would not happen.
Other interesting finding is that both of the devices need to be active, their screen would not be in lock state or in power off state.
Now if you would like to use NFC on your Nexus 7 tablet with other NFC enabled device,
please remember the NFC antenna of Nexus 7 is located in the upper-center of its back cover.,
and try to align other device with Nexus 7 at that part of the back cover.
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