Umidigi S2 signal problems

tadma Post time 2019-6-24 16:19:44 | Show all posts [Copy link]
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Umidigi S2 signal problems

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Post time 2017-12-15 20:05:28 | Show all posts |Read mode
Hello, I cant add thread to original S2 forum so Im posting it here to S2 Pro.

After 2 weeks of using the phone suddenly started to have problems with mobile data and signal. It is losing connection and is just unusable. There were no physical harms to phone such as falls. What I did first was trying to software repair it, factory reset, check if all bandwiths in settings are checked. Updated to latest version. Nothing worked. Then I contacted Vodafone (my mobile data provider), they troubleshot their side and told me it is fault in my phone.


There is one town where I dont have any problems but in our capital and other towns it is unusable. Could iz be software problem or hardware?

Thanks for help.
Post time 2017-12-16 05:12:07 | Show all posts
This is very strange case. Because if there will be hardware or software issue then signal should be working correctly in every town.
I can't explain this but I would try sim card in different device. Also I would check APN and IMEI numbers. Maybe IMEI is not compatible to your network. Who knows what network mixed up.
You can also use SN writer and write IMEI numbers from your other device (if  everything worked in other devices)
Here is SN writer instruction
http://community.umidigi.com/thread-1375-1-1.html

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Post time 2017-12-16 07:33:37 | Show all posts
Your provider is not the best. In Denmark I had same problems.

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 Author| Post time 2017-12-16 22:25:35 | Show all posts
I tried to change sim and also tried it in another device. It was working fine. Also I set up the APN as well but no luck. Tommorow I will be in town where it has problems so I will try that IMEI thing
Post time 2017-12-17 01:03:50 | Show all posts
tadma replied at 2017-12-16 22:25
I tried to change sim and also tried it in another device. It was working fine. Also I set up the AP ...

To check IMEI number you need go to settings - about phone - status - IMEI informations.
Please compare those IMEI between your S2 and other device and if everything worked on other device please use SN writer and write same IMEI from other device in to your S2

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 Author| Post time 2017-12-18 07:07:16 | Show all posts
Okay, I've done that. Succesfuly changed IMEI, also tried second slot. But the problem still remains. I contacted my seller (Umidigi store on Aliexpress) so I hope we will aggree on exchange of phone or money back.

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Post time 2017-12-24 04:18:17 | Show all posts
Hi,

I recently purchased an Umidigi C2, but I have a problem with the signal reception. It is very bad, but when I put my sim to my husband's same model phone, the signal is perfect. I tried to fix it, but no luck. Any suggestions?

Thanks for the help

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Post time 2018-12-17 23:48:57 | Show all posts
Como fazer para adicionar novo PLMN? Está broqueado - configurações de rede celuar - preferências - adicionar nvo PLMN.

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Post time 2019-6-12 11:26:08 | Show all posts
I am facing the exact same problem as you are, sent numerous emails and tickets to Umidigi support but never got an answer. Maybe if a lot of us face this issue, Umidigi will look into it more.

I went ahead and dumped the MTKLOG as per the bug report page instructions. It appears that the cellular mobile radio just..dies and the phone needs to be restarted to bring it back up. Here is part of the log from mtklog -> mobilelog -> APLog -> radio_log:

06-10 09:47:05.632413  1348  9553 D RILJ    : [4319]> RIL_REQUEST_GET_CELL_INFO_LIST [SUB1]
06-10 09:47:05.634625  1348  1498 D RILJ    : [4319]< RIL_REQUEST_GET_CELL_INFO_LIST error 1 [SUB1]
06-10 09:47:05.634883  1348  1498 D RilRequest: [4319]< RIL_REQUEST_GET_CELL_INFO_LIST error: com.android.internal.telephony.CommandException: RADIO_NOT_AVAILABLE ret=[]
06-10 09:47:05.635139  1348  1628 D MTKSST  : [GsmSST1] EVENT_MTK_GET_CELL_INFO_LIST: error ret null, e=com.android.internal.telephony.CommandException: RADIO_NOT_AVAILABLE
06-10 09:47:05.635523  1348  9553 D MTKSST  : [GsmSST1] SST.getAllCellInfo(): X size=0 list=null
06-10 09:47:05.643143  1348  9553 D MTKSST  : [GsmSST0] SST.getAllCellInfo(): E

06-10 09:47:22.654317  1348  1498 D RILJ    : [UNSL]< UNSOL_MODEM_RESTART mdl_sock_host [SUB1]
06-10 09:47:22.654858  1348  1348 D MtkGsmCdmaPhone: [MtkGsmCdmaPhone] Event EVENT_MODEM_RESET Received isInEcm = false isPhoneTypeGsm = true mImsPhone = Handler (com.mediatek.internal.telephony.imsphone.MtkImsPhone) {32efbee}
06-10 09:47:23.788317   876   963 E RILMUXD : 1238:pseudo_device_read(): Interrupt signal EIO caught
06-10 09:47:23.788441   876   963 E RILMUXD : 1273:pseudo_device_read(): Appl. dropped connection, device /dev/pts/20 shutting down. Set to be reopened
06-10 09:47:23.788690   876   970 E RILMUXD : 1238:pseudo_device_read(): Interrupt signal EIO caught
06-10 09:47:23.788717   876   963 E RILMUXD : 3734:poll_thread(): Device read function returned error

06-10 09:47:23.794426  1348  1348 D RILJ    : handleMessage: EVENT_RADIO_PROXY_DEAD cookie = 1 mRadioProxyCookie = 1 [SUB0]
06-10 09:47:23.794441  1348  1498 D RILJ    : serviceDied [SUB1]
06-10 09:47:23.794465   876   947 E RILMUXD : 3734:poll_thread(): Device read function returned error
06-10 09:47:23.794487   876   947 E RILMUXD : 3767:poll_thread(): Device polling thread terminated
06-10 09:47:23.794506   876   946 E RILMUXD : 3734:poll_thread(): Device read function returned error
06-10 09:47:23.794526   876   946 E RILMUXD : 3767:poll_thread(): Device polling thread terminated
06-10 09:47:23.794559  1668  1691 D MwiRIL  : serviceDied [SUB1]

06-10 09:47:23.915111  1348  1642 D SuppServConf: [1]handleMessage msg: EVENT_ICC_CHANGED
06-10 09:47:23.919202  1348  1348 E MtkRILJ : RadioProxy getService/setResponseFunctions: java.util.NoSuchElementException
06-10 09:47:23.925662  1348  1348 E UiccCardApplication: Received message { when=-131ms what=9 obj=android.os.AsyncResult@eac5c38 target=com.android.internal.telephony.uicc.UiccCardApplication$1 }[9] while being destroyed. Ignoring. (slot 0)
06-10 09:47:23.925848  1348  1348 D GsmCdmaCallTkr: Receives EVENT_RADIO_OFF_OR_NOT_AVAILABLE
06-10 09:47:23.926085  1348  1348 D GsmCdmaCallTracker: [0] update phone state, old=IDLE new=IDLE
06-10 09:47:23.926214  1348  1348 D MtkGsmCdmaPhone: [MtkGsmCdmaPhone] Event EVENT_RADIO_OFF_OR_NOT_AVAILABLE Received
06-10 09:47:23.928064  1348  1641 D SubscriptionInfoUpdater: Broadcasting intent ACTION_SIM_STATE_CHANGED UNKNOWN reason null for mCardIndex: 0
06-10 09:47:23.928796  1348  1574 D MtkDC-1 : DcActiveState not handled msg.what=REQ_RESET
06-10 09:47:23.928807  1348  1348 D MtkGsmCdmaPhone: [MtkGsmCdmaPhone] getDataConnectionState apnType=default ret=DISCONNECTED
06-10 09:47:23.928851  1348  1574 D MtkDC-1 : DcDefault msg=REQ_RESET RefCount=1
06-10 09:47:23.928872  1348  1574 D MtkDC-1 : DcDefaultState: msg.what=REQ_RESET
06-10 09:47:23.928990  1348  1574 D MtkDC-1 : DcActiveState: exit dc=com.mediatek.internal.telephony.dataconnection.MtkDataConnection$MtkDcActiveState@6541f28
06-10 09:47:23.929309  1348  1574 D MtkDC-1 : DcInactiveState: enter() mTag=3
06-10 09:47:23.929414  1348  1574 D MtkDC-1 : DcInactiveState: enter notifyConnectCompleted +ALL failCause=NONE

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Post time 2019-6-24 16:19:44 | Show all posts
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