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5 votes
Accepted

Does play store filter out NFC apps for phones which do not have NFC?

That depends on the app. For using NFC in an app the developer has to declare that in the app's AndroidManifest.xml that is contained it the app (and used by the PlayStore to detect if an app is ...
Robert's user avatar
  • 20.4k
5 votes
Accepted

Is it possible to add the NFC to the phone which does not have it?

Sorry to say this, but it seems to be a long way off before truly turning a NON NFC into NFC phone (as pointed out by Izzy in comments, there have been some efforts but no progress) NFC SD and SIM ...
beeshyams's user avatar
  • 41k
5 votes
Accepted

The difference between NFC mode on Android (e.g. card mode, P2P mode)

There are 3 NFC modes. Taken directly from official Android Developer - Near Field Communication, Android-powered devices with NFC simultaneously support three main modes of operation: Reader/writer ...
Andrew T.'s user avatar
  • 16.1k
3 votes
Accepted

Which Android phones support MiFare Classic NFC tags?

Here's a source for both Mifare Classic and Mifare Ultralight, published last month Smartphones and Tablets Compatible with NFC Tags
beeshyams's user avatar
  • 41k
3 votes

Is there a way to write a full vCard via NFC?

if you have an app like NFC Tools or a manual reader/writer, you can add a custom/manual data record and use text/vcard as the content type. For the data field, just paste your vcard data like: ...
user3302605's user avatar
2 votes

How can I copy a NFC badge to my (rooted) Android phone for Daily Usage

Depending on the type of card used in your school, copying is not a simple task: The data is may be cryptographically protected and you need to emulate the UID, an ID which gets transmitted by the ...
DanielAW's user avatar
  • 156
2 votes
Accepted

NFC battery draining through constant use

The Tag Dispatch System of Android Developers says Android-powered devices are usually looking for NFC tags when the screen is unlocked, unless NFC is disabled in the device's Settings menu. When ...
beeshyams's user avatar
  • 41k
2 votes

The difference between NFC mode on Android (e.g. card mode, P2P mode)

Near Field Communication (NFC) from Android Developers explains (emphasis added and edited for clarity) Near Field Communication (NFC) is a set of short-range wireless technologies, typically ...
beeshyams's user avatar
  • 41k
2 votes

Is there a way to write a full vCard via NFC?

In NFC Tools, there is a simple contact option.
Patrick Dennis's user avatar
2 votes
Accepted

How to emulate a NFC card with an Android phone?

The problems seems to be that it's not possible to emulate/modify the sector 0, which is often the UID (identifier). This question is linked (but probably outdated).
Basj's user avatar
  • 779
2 votes

Does a store see my email address when I pay with Google Pay (NFC)

Google Pay transmits credit card number(s) to the merchant terminal, I don't think the payment NFC standard even has the possibility to transmit an e-mail address (no data field for that). According ...
Robert's user avatar
  • 20.4k
2 votes

Can I make NFC payments using Google Pay while in airplane mode?

The payment system of Google Pay uses tokens for non-online/non-website payments: Google Pay does not send merchants their customers' actual card numbers when they pay in stores; instead, Google Pay ...
Robert's user avatar
  • 20.4k
2 votes
Accepted

"NFC Service has stopped" dialog repeatedly popping up

I had the exact same problem with my Armor phone. I contacted the importer, and they replied that a bug in an online banking app (S-mobiili) was the culprit and that deleting it until they got it ...
Emma's user avatar
  • 36
2 votes
Accepted

Smartphone cannot read NFC tag I use to enter my building

The tag in your photo is not an "NFC" type tag; it's an 125 kHz RFID tag. (You can tell from the number stamped on it... which, by the way, is the entire "tag data" that's stored ...
user1686's user avatar
  • 261
1 vote

Setting a reminder for when you enter your car

you need to give more informations to help us understand and then help you. When you say 'next time we are in proximity of the car' what kind of proximity is it ? NFC could be a solution but the max ...
mindbreaker's user avatar
1 vote

"NFC Service has stopped" dialog repeatedly popping up

I had the same problem on my Unihertz Jelly 2, also with Android 11. I contacted the manufacturer, and they instructed me to install an OTA update available from their website (the System Update under ...
mgunyho's user avatar
  • 11
1 vote

Do wireless charging adapters interfere with NFC?

TLDR; Qi wireless charging can damage NFC tags and readers. I don't have any experience with using Qi adapters and NFC in conjunction but I would imagine there would be some interference. Depending ...
x1ras's user avatar
  • 133
1 vote

Samsung Galaxy emitting constant beeping sound

After further investigation, the issue turned out to be that a card with an NFC chip was interacting with the NFC receiver in the phone. While there were no open applications, this still caused a ...
levengli's user avatar
  • 111
1 vote
Accepted

What is the catch with microSD cards that have NFC support and will my Xiaomi Mi A1 support it?

Mi A1 does not have NFC support. See specs here so it doesn't make a difference what card you buy. How you plan to use the card (external storage or adoptable-storage ), what you plan to store on it ...
beeshyams's user avatar
  • 41k
1 vote

NFC on S4 doesn't work at all

Luckily a friend of mine has an S4, here its back. See the 4 gold metallic pins? Those are the NFC antennas connectors The antenna is on the back cover, not visible on the photo bellow, his back ...
esQmo_'s user avatar
  • 3,237
1 vote
Accepted

Smart Lock unreliable/not working with NFC tag?

This is a known issue, https://productforums.google.com/forum/#!topic/phone-by-google/DyxZwJpsOwY & https://issuetracker.google.com/issues/62268615. In addition, the NFC Smart Lock feature has ...
Elijah Lynn's user avatar
1 vote
Accepted

Can I pay with my phone if I switch to Cyanogenmod?

Yes flashing Cyanogenmod will enable you to pay using your banking app. Cyanogenmod does have support for the Open Mobile API. The Second approach however will be a bit tricky to do as I have not ...
rajatpunkstaa's user avatar
1 vote
Accepted

Read the chip info from a built-in NFC chip in mobile phone

There isn't an NFC Tag (as the hardware device) but there is a chip which can act like an NFC Tag and provide data.
Microgamer's user avatar
1 vote

Can I encode an NFC tag to send HTTP POST data?

Yes, NFC Tools PRO has a Post option https://play.google.com/store/apps/details?id=com.wakdev.nfctools.pro&hl=en
Masster's user avatar
  • 21
1 vote

Is NFC required for reading RFID?

RFID states for Radio Frequency Identification, and this kind of technology use Radio Waves for identification purposes, now when we know RFID is nothing else than radio wave (electromagnetic field ...
sifywojtek's user avatar
1 vote

Reading NFC tags from the front of the phone

It is possible. Apple has filed a patent on a clever new use of antenna real estate on a smartphone. Apple patents NFC antenna that works on all sides of a mobile device
joop s's user avatar
  • 11
1 vote

How to know if my phone has NFC technology?

For some years now, there are many free apps that will give you this information. I have one called Phone Tester which shows this screen
Rohit Gupta's user avatar
  • 1,893

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