NFC doesn't works on pixel7

mofahqc

when I try to turn on the nfc selection ,it will turns off automatic.logs are here:
--------- beginning of events 06-18 03:28:07.396 3207 3207 I auditd : avc=type=1400 audit(0.0:341): avc: denied { read } for comm="com.android.nfc" name="u:object_r:odsign_prop:s0" dev="tmpfs" ino=369 scontext=u:r:nfc:s0 tcontext=u:object_r:odsign_prop:s0 tclass=file permissive=0 06-18 03:28:07.876 3207 3207 I auditd : avc=type=1400 audit(0.0:367): avc: denied { read } for comm="main" name="u:object_r:build_attestation_prop:s0" dev="tmpfs" ino=186 scontext=u:r:nfc:s0 tcontext=u:object_r:build_attestation_prop:s0 tclass=file permissive=0 06-18 03:28:07.876 3207 3207 I auditd : avc=type=1400 audit(0.0:368): avc: denied { read } for comm="main" name="u:object_r:build_attestation_prop:s0" dev="tmpfs" ino=186 scontext=u:r:nfc:s0 tcontext=u:object_r:build_attestation_prop:s0 tclass=file permissive=0 06-18 03:28:07.876 3207 3207 I auditd : avc=type=1400 audit(0.0:369): avc: denied { read } for comm="main" name="u:object_r:build_attestation_prop:s0" dev="tmpfs" ino=186 scontext=u:r:nfc:s0 tcontext=u:object_r:build_attestation_prop:s0 tclass=file permissive=0 06-18 03:28:07.876 3207 3207 I auditd : avc=type=1400 audit(0.0:370): avc: denied { read } for comm="main" name="u:object_r:build_attestation_prop:s0" dev="tmpfs" ino=186 scontext=u:r:nfc:s0 tcontext=u:object_r:build_attestation_prop:s0 tclass=file permissive=0 06-18 03:28:07.876 3207 3207 I auditd : avc=type=1400 audit(0.0:371): avc: denied { read } for comm="main" name="u:object_r:build_attestation_prop:s0" dev="tmpfs" ino=186 scontext=u:r:nfc:s0 tcontext=u:object_r:build_attestation_prop:s0 tclass=file permissive=0 06-18 03:28:08.108 3207 3207 I auditd : avc=type=1400 audit(0.0:403): avc: denied { read } for comm="binder:3207_2" name="u:object_r:qemu_sf_lcd_density_prop:s0" dev="tmpfs" ino=396 scontext=u:r:nfc:s0 tcontext=u:object_r:qemu_sf_lcd_density_prop:s0 tclass=file permissive=0 06-18 03:28:08.108 3207 3207 I auditd : avc=type=1400 audit(0.0:404): avc: denied { read } for comm="binder:3207_2" name="u:object_r:qemu_sf_lcd_density_prop:s0" dev="tmpfs" ino=396 scontext=u:r:nfc:s0 tcontext=u:object_r:qemu_sf_lcd_density_prop:s0 tclass=file permissive=0

it looks like SELinux blocking NFC from doing something...as[https://discuss.grapheneos.org/d/13480-how-to-enable-and-use-nfc/8](https://)
but i do not enable the Battery Saver
deepseek suggest me edit the SElinux rules, could i do that? or any other advice

other8026

mofahqc Unless I'm mistaken, the logs here don't say whey nfc isn't working.

How do you know NFC isn't working? What are you trying to do? Is there a specific app that's not working, or multiple?

mofahqc

other8026 all app are not working. the button of enable nfc, after I press it and exit the setting, become grey soon.I mean the nfc totally cant be used. It's my pixel's hardware broken.

mofahqc

mofahqc Is my pixel's hardware broken?

other8026

mofahqc Does it show up in Settings > Connected devices > Connection preferences > NFC? If you can try turning it on and getting the Settings app's logs, then maybe they will be helpful.

mofahqc

other8026 --------- switch to main
06-16 04:35:10.499 4528 4528 E cutils-trace: Error opening trace file: No such file or directory (2)
06-16 04:35:10.505 4530 4530 I crash_dump64: obtaining output fd from tombstoned, type: kDebuggerdTombstoneProto
06-16 04:35:10.506 4530 4530 I crash_dump64: performing dump of process 4466 (target tid = 4494)
--------- switch to crash
06-16 04:35:10.534 4530 4530 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
06-16 04:35:10.534 4530 4530 F DEBUG : Build fingerprint: 'google/panther/panther:15/BP1A.250505.005.B1/2025061600:user/release-keys'
06-16 04:35:10.534 4530 4530 F DEBUG : Revision: 'MP1.0'
06-16 04:35:10.534 4530 4530 F DEBUG : ABI: 'arm64'
06-16 04:35:10.534 4530 4530 F DEBUG : Timestamp: 2025-06-16 12:35:10.509508000+0800
06-16 04:35:10.534 4530 4530 F DEBUG : Process uptime: 12s
06-16 04:35:10.534 4530 4530 F DEBUG : Cmdline: /vendor/bin/hw/android.hardware.nfc-service.st
06-16 04:35:10.534 4530 4530 F DEBUG : pid: 4466, tid: 4494, name: android.hardwar >>> /vendor/bin/hw/android.hardware.nfc-service.st <<<
06-16 04:35:10.534 4530 4530 F DEBUG : uid: 1027
06-16 04:35:10.534 4530 4530 F DEBUG : tagged_addr_ctrl: 0000000000000001 (PR_TAGGED_ADDR_ENABLE)
06-16 04:35:10.534 4530 4530 F DEBUG : signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
06-16 04:35:10.534 4530 4530 F DEBUG : x0 0000000000000000 x1 000000000000118e x2 0000000000000006 x3 0000d624cc48aa50
06-16 04:35:10.534 4530 4530 F DEBUG : x4 0000000000000010 x5 0000000000000010 x6 0000000000000010 x7 7f7f7f7f7f7f7f7f
06-16 04:35:10.534 4530 4530 F DEBUG : x8 00000000000000f0 x9 93fa8aed94785b00 x10 0000000000000001 x11 0000d94d1f32a7c0
06-16 04:35:10.534 4530 4530 F DEBUG : x12 ffffff80ffffffd0 x13 000000007fffffff x14 000000000001e478 x15 000000089370f5de
06-16 04:35:10.534 4530 4530 F DEBUG : x16 0000d94d1f394280 x17 0000d94d1f37d940 x18 0000d624ca684000 x19 0000000000001172
06-16 04:35:10.534 4530 4530 F DEBUG : x20 000000000000118e x21 00000000ffffffff x22 000000003b9ac9ff x23 0000d94d24a642c5
06-16 04:35:10.534 4530 4530 F DEBUG : x24 0000d624cc6f1040 x25 0000000000000000 x26 b400d76cc0c078c0 x27 b400d76cc0c07890
06-16 04:35:10.534 4530 4530 F DEBUG : x28 0000d94d24a74000 x29 0000d624cc48aad0
06-16 04:35:10.534 4530 4530 F DEBUG : lr 0000d94d1f313fc8 sp 0000d624cc48aa50 pc 0000d94d1f313fec pst 0000000000001000
06-16 04:35:10.534 4530 4530 F DEBUG : 5 total frames
06-16 04:35:10.534 4530 4530 F DEBUG : backtrace:
06-16 04:35:10.534 4530 4530 F DEBUG : #00 pc 0000000000063fec /apex/com.android.runtime/lib64/bionic/libc.so (abort+156) (BuildId: c7787957452da188cb3829f99218a813)
06-16 04:35:10.534 4530 4530 F DEBUG : #01 pc 000000000000edec /vendor/lib64/nfc_nci.st21nfc.default.so (halWrapperCallback(unsigned char, unsigned char)+1116) (BuildId: 7722ac9554c4568b3fe3636f18adc6e7)
06-16 04:35:10.534 4530 4530 F DEBUG : #02 pc 000000000000c3f0 /vendor/lib64/nfc_nci.st21nfc.default.so (HalWorkerThread(void)+256) (BuildId: 7722ac9554c4568b3fe3636f18adc6e7)
06-16 04:35:10.534 4530 4530 F DEBUG : #03 pc 0000000000075304 /apex/com.android.runtime/lib64/bionic/libc.so (pthread_start(void)+180) (BuildId: c7787957452da188cb3829f99218a813)
06-16 04:35:10.534 4530 4530 F DEBUG : #04 pc 0000000000066f70 /apex/com.android.runtime/lib64/bionic/libc.so (start_thread+64) (BuildId: c7787957452da188cb3829f99218a813)

other8026

mofahqc Where did you get these logs? Also, has NFC always worked for you before and only recently stopped working for you?

mofahqc

other8026 I get logs from Settings > Apps > All apps > Show system > Nfc service > View logs
It's my new pixel. I get it from an online second hand market.

other8026

mofahqc I'm not aware of other people who've reported this problem. NFC works fine on two of my devices. They're not Pixel 7s, so if there's a device-specific issue then I can't check myself. It's very possible yours has a hardware problem that's causing the crash. Without reports from other people, the only real way of knowing if the issue you're experiencing is a GrapheneOS issue is by testing if NFC works with the stock OS installed.