Hello everyone,
I currently have the following setup:
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Amarisoft RAN (gNB)
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Free5GC core
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A Xiaomi Mi smartphone with 5G SA enabled
I have configured Amarisoft with the correct IMSI, PLMN, and other subscriber credentials, and the gNB configuration has also been verified. In MongoDB, I created the subscriber entry with the appropriate parameters.
The Xiaomi phone is able to discover the network, but when I attempt to connect, it displays the message: "Unable to connect to current network…"
I checked the AMF logs and found the following message:
2026-07-08T13:13:48.296610953Z [INFO][AMF][Ngap][ran_addr:10.50.101.62:56696] Handle InitialUEMessage
2026-07-08T13:13:48.296702581Z [INFO][AMF][Ngap][amf_ue_ngap_id:RU:18,AU:16(3GPP)][ran_addr:10.50.101.62:56696] New RanUe [RanUeNgapID:18][AmfUeNgapID:16]
2026-07-08T13:13:48.296714990Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] New RanUe [RanUeNgapID: 18]
2026-07-08T13:13:48.296755352Z [INFO][AMF][Ngap][ran_addr:10.50.101.62:56696] 5GSMobileIdentity ["SUCI":"suci-0-001-01-0-0-0-0123456789", err: <nil>]
2026-07-08T13:13:48.296797600Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] SUCI suci-0-001-01-0-0-0-0123456789
2026-07-08T13:13:48.296836122Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] Trigger initial Context Setup procedure
2026-07-08T13:13:48.296895566Z [INFO][AMF][CTX] New AmfUe [supi:][guti:20893cafe0000000012]
2026-07-08T13:13:48.296936793Z [INFO][AMF][Gmm] Handle event[Gmm Message], transition from [Deregistered] to [Deregistered]
2026-07-08T13:13:48.296947214Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] GmmMessageEvent at GMM State[DeRegistered]
2026-07-08T13:13:48.296953633Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Handle Registration Request
2026-07-08T13:13:48.296963361Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] OnGoing[Nothing]->[Registration] PPI[0]->[0]
2026-07-08T13:13:48.296970283Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] RegistrationType: Initial Registration
2026-07-08T13:13:48.296978534Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] MobileIdentity5GS: SUCI[suci-0-001-01-0-0-0-0123456789]
2026-07-08T13:13:48.297001533Z [INFO][AMF][Gmm] Handle event[Start Authentication], transition from [Deregistered] to [Authentication]
2026-07-08T13:13:48.297015875Z [DEBU][AMF][Gmm] Start Authentication
2026-07-08T13:13:48.297021508Z [DEBU][AMF][Gmm] Exit event
2026-07-08T13:13:48.297027508Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] EntryEvent at GMM State[Authentication]
2026-07-08T13:13:48.297043825Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] AuthRestartEvent at GMM State[Authentication]
2026-07-08T13:13:48.297050313Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Authentication procedure
2026-07-08T13:13:48.297055667Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] UE has SUCI / SUPI
2026-07-08T13:13:48.316792365Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Send Authentication Request
2026-07-08T13:13:48.316871341Z [INFO][AMF][Ngap][amf_ue_ngap_id:RU:18,AU:16(3GPP)][ran_addr:10.50.101.62:56696] Send Downlink Nas Transport
2026-07-08T13:13:48.316934369Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] Send NGAP message To Ran
2026-07-08T13:13:48.316976552Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] Write 66 bytes
2026-07-08T13:13:48.316991613Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Start T3560 timer
2026-07-08T13:13:48.356463591Z [INFO][AMF][Ngap][ran_addr:10.50.101.62:56696] Handle UplinkNASTransport
2026-07-08T13:13:48.356504717Z [INFO][AMF][Ngap][amf_ue_ngap_id:RU:18,AU:16(3GPP)][ran_addr:10.50.101.62:56696] Handle UplinkNASTransport (RAN UE NGAP ID: 18)
2026-07-08T13:13:48.356566502Z [INFO][AMF][Gmm] Handle event[Gmm Message], transition from [Authentication] to [Authentication]
2026-07-08T13:13:48.356649372Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] GmmMessageEvent at GMM State[Authentication]
2026-07-08T13:13:48.356656381Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Handle Authentication Failure
2026-07-08T13:13:48.356662498Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Stop T3560 timer
2026-07-08T13:13:48.356677528Z [WARN][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Authentication Failure Cause: Mac Failure
2026-07-08T13:13:48.356688132Z [INFO][AMF][Gmm][amf_ue_ngap_id:RU:18,AU:16(3GPP)][supi:SUPI:] Send Authentication Reject
2026-07-08T13:13:48.356696798Z [INFO][AMF][Ngap][amf_ue_ngap_id:RU:18,AU:16(3GPP)][ran_addr:10.50.101.62:56696] Send Downlink Nas Transport
2026-07-08T13:13:48.356748121Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] Send NGAP message To Ran
2026-07-08T13:13:48.356810269Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] Write 27 bytes
2026-07-08T13:13:48.356832522Z [INFO][AMF][Gmm] Handle event[Authentication Fail], transition from [Authentication] to [Deregistered]
2026-07-08T13:13:48.356838362Z [DEBU][AMF][Gmm] Authentication Fail
2026-07-08T13:13:48.356842441Z [WARN][AMF][Gmm] Reject authentication
2026-07-08T13:13:48.356846692Z [INFO][AMF][Ngap][amf_ue_ngap_id:RU:18,AU:16(3GPP)][ran_addr:10.50.101.62:56696] Send UE Context Release Command
2026-07-08T13:13:48.356882092Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] Send NGAP message To Ran
2026-07-08T13:13:48.356900642Z [DEBU][AMF][Ngap][ran_addr:10.50.101.62:56696] Write 20 bytes
2026-07-08T13:13:48.356926402Z [INFO][AMF][CTX] AmfUe[] is removed
2026-07-08T13:13:48.356937451Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:,AU:(3GPP)][supi:SUPI:] Exit event
2026-07-08T13:13:48.356944724Z [DEBU][AMF][Gmm][amf_ue_ngap_id:RU:,AU:(3GPP)][supi:SUPI:] EntryEvent at GMM State[DeRegistered]
2026-07-08T13:13:48.485912412Z [INFO][AMF][Ngap][ran_addr:10.50.101.62:56696] Handle UEContextReleaseComplete
2026-07-08T13:13:48.485974966Z [ERRO][AMF][Ngap][ran_addr:10.50.101.62:56696] Handle UEContextReleaseComplete: no RanUe Context[AmfUeNgapID: 16, RanUeNgapID: 18]
I really do not understand what is going on…Has anyone encountered a similar issue or have any suggestions on what I should check next?
Thank you in advance.
P.S. If you need any additional information that it might help, feel free to ask it 