I have the same problem (mms not sending nor receiving).
I have activated the developer option and have created an error report.
In this, I found the following error messages that may be related:
##-## ##:21:47.337 radio 4796 23069 D MmsService: [SendRequest@165d539] APN name is mms.eplus.de
##-## ##:21:47.338 radio 4796 23069 I MmsService: [SendRequest@165d539] Loading APN using name mms.eplus.de
##-## ##:21:47.350 radio 4796 23069 I MmsService: [SendRequest@165d539] Using APN [type=mms mmsc=http://mms/eplus/ mmsproxy=212.23.97.153 mmsport=5080 name=E-Plus MMS apn=mms.eplus.de bearer_bitmask=0 protocol=IP roaming_protocol=IP authtype=1 user=mms password=eplus
##-## ##:21:47.353 radio 4796 23069 D MmsService: [SendRequest@165d539] HTTP: POST http://mms[17], proxy=212.23.97.153:5080, PDU size=########
##-## ##:21:47.354 radio 4796 23069 I MmsService: [SendRequest@165d539] HTTP: User-Agent=LineageOS
##-## ##:21:47.354 radio 4796 23069 I MmsService: [SendRequest@165d539] HTTP: UaProfUrl=http://www.google.com/oha/rdf/ua-profile-kila.xml
##-## ##:21:47.359 radio 4796 23069 E MmsService: [SendRequest@165d539] HTTP: IO failure
##-## ##:21:47.359 radio 4796 23069 E MmsService: java.net.ConnectException: Failed to connect to /212.23.97.153:5080
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:143)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:112)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:258)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.MmsHttpClient.execute(MmsHttpClient.java:183)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.SendRequest.doHttp(SendRequest.java:83)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.MmsRequest.execute(MmsRequest.java:171)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.MmsService$2.run(MmsService.java:414)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at java.lang.Thread.run(Thread.java:764)
##-## ##:21:47.359 radio 4796 23069 D MmsService: [SendRequest@165d539] MmsNetworkManager: release, count=0
##-## ##:21:47.359 radio 4796 23069 E MmsService: [SendRequest@165d539] HTTP or network I/O failure
##-## ##:21:47.359 radio 4796 23069 E MmsService: com.android.mms.service.exception.MmsHttpException: java.net.ConnectException: Failed to connect to /212.23.97.153:5080
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.MmsHttpClient.execute(MmsHttpClient.java:225)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.SendRequest.doHttp(SendRequest.java:83)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.MmsRequest.execute(MmsRequest.java:171)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.MmsService$2.run(MmsService.java:414)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at java.lang.Thread.run(Thread.java:764)
##-## ##:21:47.359 radio 4796 23069 E MmsService: Caused by: java.net.ConnectException: Failed to connect to /212.23.97.153:5080
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:143)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:112)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:258)
##-## ##:21:47.359 radio 4796 23069 E MmsService: at com.android.mms.service.MmsHttpClient.execute(MmsHttpClient.java:183)
##-## ##:21:47.359 radio 4796 23069 E MmsService: ... 6 more
There are some things that are strange:
- There is an ip address with a leading slash:
/212.23.97.153:5080
. That does not seems to be a valid representation.
- The address http://www.google.com/oha/rdf/ua-profile-kila.xml is not resolvable (404).
- There is a google address. /e/OS should be a Google-free OS, but I know that sometimes this cannot be completely prevented.
The points 2. and 3. doesn’t seem to be related to connectivity problems (look here).
Maybe related, maybe not:
##-## ##:21:25.717 1000 4334 4497 E ConnectivityService: Exception adding interface: java.lang.IllegalStateException: command '710 network interface add 113 rmnet0' failed with '400 710 addInterfaceToNetwork() failed (Device or resource busy)'
##-## ##:21:25.717 1000 4334 4497 E ConnectivityService: Exception in addRoute for non-gateway: java.lang.IllegalStateException: command '712 network route add 113 rmnet0 ###.###.###.###/32' failed with '400 712 addRoute() failed (No such file or directory)'
##-## ##:21:25.718 1000 4334 4497 E ConnectivityService: Exception in addRoute for gateway: java.lang.IllegalStateException: command '713 network route add 113 rmnet0 0.0.0.0/0 ###.###.###.###' failed with '400 713 addRoute() failed (No such file or directory)'
PS: I have replaced some information with #
for more privacy.