[Samsung Galaxy S 5 Unified Development] systemcrash:
Get a SIM info tool from Play, and take a screenshot about the SIM INFO and share it here - look for things like MCC and MNC

I see this in the MODEM.log:

02-22 15:02:15.660 E/RILD ( 425): IsRegisteredNetworkType(): netType[1] feature[00] state[0]
02-22 15:02:15.661 E/RILD ( 425): DoRouteIn - FW reqId : 79
02-22 15:02:15.663 D/TelephonyManager( 1287): getLteOnCdmaMode=0 curVal=-1 product_type='' lteOnCdmaProductType=''
02-22 15:02:15.664 E/RILD ( 425): getPreferredApnId(): open fail [/data/data/com.android.providers.telephony/shared_prefs/preferred-apn1.xml]
02-22 15:02:15.664 E/RILD ( 425): getPreferredApnId(): preferredApnId = -1
02-22 15:02:15.675 E/RILD ( 425): Find apn: 384 apn.fastweb.it for type(default) from types(default,supl,mms)
02-22 15:02:15.677 E/RILD ( 425): rat = 14
02-22 15:02:15.680 E/RILD ( 425): IsAttachApnChanged: mMi->GetAttachApn, old(apn.fastweb.it,1)
02-22 15:02:15.680 E/RILD ( 425): IsEsmFlagZeroNetwork: 222992 operator ESM flag 1
02-22 15:02:15.680 E/RILD ( 425): RefreshAttachApn: Attach Apn is not changed, do nothing

and also

02-22 15:02:22.641 D/DefaultPhoneNotifier( 1287): nofityServiceState: mRegistry=com.android.internal.telephony.ITelephonyRegistry$Stub$Proxy@9f0565e ss=0 0 voice home data home 3 ITA 3 ITA 22299 3 ITA 3 ITA 22299 (manual) UMTS UMTS CSS not supported -1 -1 RoamInd=-1 DefRoamInd=-1 EmergOnly=false IsDataRoamingFromRegistration=false IsUsingCarrierAggregation=false sender=Handler (com.android.internal.telephony.GsmCdmaPhone) {3e88961} phondId=0 subId=1

Did you manually choose a network, or do you let it select automatically? Set to auto. I cannot force LTE for my SIM/Network combo - not least because I am roaming, but I'm probably a different use case than you.

Can you actually confirm that you get LTE connection when you are on Sammy ROM? Screenshot...

apns has:

<apn carrier="Fastweb 4G" mcc="222" mnc="08" apn="apn.fastweb.it" proxy="" port="" user="" password="" mmsc="http://mms.fastweb.it/mms/wapenc" mmsproxy="85.18.189.217" mmsport="8080" mvno_type="spn" mvno_match_data="FASTWEB" authtype="2" type="default,supl,mms" />

and

<apn carrier="Fastweb 3G" mcc="222" mnc="99" apn="apn.fastweb.it" proxy="" port="" user="" password="" mmsc="http://mms.fastweb.it/mms/wapenc" mmsproxy="10.0.65.9" mmsport="8080" mvno_type="spn" mvno_match_data="FASTWEB" authtype="2" type="default,supl,mms" />

But your RIL DEBUG SHOWS:

02-22 15:02:21.984 D/RILJ ( 1287): [5155]< RIL_REQUEST_GET_CELL_INFO_LIST [CellInfoWcdma:{mRegistered=YES mTimeStampType=oem_ril mTimeStamp=3119981659004ns CellIdentityWcdma:{ [B]mMcc=222 mMnc=99[/B] mLac=60479 mCid=21419034 mPsc=46 mUarfcn=2147483647} CellSignalStrengthWcdma: ss=0 ber=99}, CellInfoWcdma:{mRegistered=NO mTimeStampType=oem_ril mTimeStamp=3119981659004ns CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 mCid=2147483647 mPsc=227 mUarfcn=2147483647} CellSignalStrengthWcdma: ss=0 ber=99}, CellInfoWcdma:{mRegistered=NO mTimeStampType=oem_ril mTimeStamp=3119981659004ns CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 mCid=2147483647 mPsc=59 mUarfcn=2147483647} CellSignalStrengthWcdma: ss=0 ber=99}, CellInfoWcdma:{mRegistered=NO mTimeStampType=oem_ril mTimeStamp=3119981659004ns CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 mCid=2147483647 mPsc=55 mUarfcn=2147483647} CellSignalStrengthWcdma: ss=0 ber=99}, CellInfoWcdma:{mRegistered=NO mTimeStampType=oem_ril mTimeStamp=3119981659004ns CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 mCid=2147483647 mPsc=222 mUarfcn=2147483647} CellSignalStrengthWcdma: ss=0 ber=99}, CellInfoWcdma:{mRegistered=NO mTimeStampType=oem_ril mTimeStamp=3119981659004ns CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 mCid=2147483647 mPsc=43 mUarfcn=2147483647} CellSignalStrengthWcdma: ss=0 ber=99}] [SUB0]

i.e.

02-22 15:02:21.984 D/RILJ ( 1287): [5155]< ... [B]mMcc=222 mMnc=99[/B]...

The above is about APNs (data) - not to do with the network on which you register - but could be reflective of a related problem. Your device does not lock onto LTE because it does not think that it or the SIM can. This is based on the RIL.

Basically, your SIM reports that it will connect to 222 / 99, which is a DIFFERENT network than the 4G network reported above.

Read this:

https://fastweb.it/forum/servizi-re...ecniche/connessione-3g-in-roaming-t17284.html

Question for [MENTION=5795145]javelinanddart[/MENTION]