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Hi,
I have Nexus 4 for about 3 months, and I was using it fine with my SIM cut as micro sim in my carrer.
On Friday night, I put it into airplane mode and went sleep. On the morning I disabled airplane mode but the carrier signal didn´t came back.
I tried then put my micro sim into another phone, and it worked fine. I other carrier micro sim in my phone (also cut from normal SIM) and it worked just fine !
I already tested 2 micro sim from my carrier and all of them gets the same, N4 says 'No Service | Carrier name' but with another carrier, it works fine (tested with 3 different micro sim, from this same other carrier).
I called to my carrier asking if there is something blocking my phone, but they say everything is fone every time. (Btw I discovered that my sim was blocked for some reason, but it is now unblocked - so I´m thinking if they did not blocked my IMEI, but they say no every time).
If I go to the Mobile Networks -> network operators and choose my carrier from the list, it says 'Selected network (XX) unavailable'. If I choose automatic, it does not give me any error, but the 'No Service' text...
I already tried factory reset, reboot, airplane mode, flashed google factory image, flashed radio .33, .48 and .54, flashed CM 10.2... nothing...
My question is, is any way, techinical way speaking, that my phone has 'broken' something that avoid me to use only a specific carrier? Because my carrier adivce me to take it to repair, as it is the guilt on the history, but I´m thinking it is very strange that it work for another carrier but mine...
Is that even possible ?
Thank for you help !
"If I go to the Mobile Networks -> network operators and choose my carrier from the list, it says 'Selected network (XX) unavailable'. If I choose automatic, it does not give me any error, but the 'No Service' text..."
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I'm having the same problem here, I've tried to flash back 4.2.2 ROM and then 4.3 stock but still no better. please any1 help us :crying:
Have you checked APN settings? I've seen it sometimes default to the wrong one if there's multiple in there. Who is your carrier?
It happens to be in my case, a problem with the carrier itself. I tried others SIMCard from same carrier, and got the same issue. Tried from a different carrier and worked just fine.
After a long fight if the carrier, I found out that my IMEI was on blacklist only for that carrier and after another long fight, I could get it unblocked and everything got back as normal...
trystan2k said:
It happens to be in my case, a problem with the carrier itself. I tried others SIMCard from same carrier, and got the same issue. Tried from a different carrier and worked just fine.
After a long fight if the carrier, I found out that my IMEI was on blacklist only for that carrier and after another long fight, I could get it unblocked and everything got back as normal...
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I have the same problem with my nexus 7 2013 LTE, my carrier is always unavailable other 2 carriers in my country are just working fine. why would a a carrier put IMEI on a blacklist? I want more info about this problem if you pleased.
thais14_03 said:
I have the same problem with my nexus 7 2013 LTE, my carrier is always unavailable other 2 carriers in my country are just working fine. why would a a carrier put IMEI on a blacklist? I want more info about this problem if you pleased.
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They have a lot of reasons to do that. In my case I believe that the cause was my phone got stuck with something and start to consume a lot of 3g data. As my plan do not allow tethering, they identify this high usage as tethering and blocked both my simcard and my IMEI (even that at first they swear my IMEI was not blocked, but after I opened a ticket in government regulations, they fixed it).
If it works with 2 other carries, do not work with other sim cards from your carrier and in past it worked fine, it is 99% sure that your IMEI is blocked at the carrier, I would say
SIM problem with i9505
I have an s4 which was on Tmobile, i upgraded in a shop to a note 3 om EE and had my number ported to the note 3, ever since the s4 will not take an EE sim card, it just says there is no sim inserted, strangely though there is signal showing but when you try to dial out it says not registered on network, i have spoken to Tmobile, EE and taken it into numerous shops, essentially they are useless and dont want to know, i dont think the SIM socket is damaged as it takes every other sim and works fine. I just flashed an EE stock firmware to it but still it doesnt seem to accept the EE sim.
I have also put root checker on the phone which is saying the unit is not rooted properly, if that is so then surely i wouldnt have been able to flash the firmware to it ?.
Not sure what steps i should take now to try to sort this out, the carrier is denying that the problem was caused by them, some have said that it is locked from the EE network, if that was so i would have no service, not an uninserted sim error.
Is there something that will unlock it if indeed it is a lock problem (which i dont think it is)
Ok
Sent from my GT-I9300I using Tapatalk
Hello,
I came upon a G900R7. I have no idea what carrier it was originally on. But the thing is in a weird state. It doesn't seem to be locked, but it won't take a sim card from multiple carriers. AND the IMEI is not blacklisted. It comes up all green.
When you boot it without a sim card, it complains that there is no sim card. When you put a sim card in it, it just doesn't connect to ANY mobile networks. No calls, sms, data, nothing. I've reset it back to stock, rooted and added TWRP.
I know they say the R7 is from C Spire or nTelos or whatever. But I'm 95% sure it's not from one of those carriers. That carrier doesn't really exist in this area.
Anyway, if you have any ideas on how I can get this thing to get back on a network (re-format EFS or whatever) please let me know. Thanks!
If they say it belongs to C Spire or nTelos or whatever, I'd suggest testing a SIM from one of those carriers....
Yeah I've never even heard of those carriers. And I can't imagine where I would find those services, other than ordering a bunch of stuff online.
There has got to be a way to unlock this thing. From everything I've read, C Spire doesn't lock their devices. And I should be getting an unlock screen if it was locked. So I'm thinking this is a baseband/firmware issue. I mean it's like it doesn't understand what the mobile radios are doing in this phone.
I wonder if there is a way to flash all of the radios back to stop. Perhaps something is wrong with the firmware itself.
Hi! Let me know if yo solve the problem.! I have the same issue! Exactly like that! [email protected]
I have this phone and my carrier is c spire which used to be cellular south.
My friends have phones like this on Triangle Mobile.
This carrier was on a 3g only network until the end of 2015 . They then started using 4G lte but in order to get on their 4G network You have to buy a new ,overpriced phone from them . The phones my friends have , have the 4glte sticker on the back and, a sim card slot but there's no sim card in there. The carrier says they can't update or do anything to the phone that would make it work with 4glte.
Did you ever find a solution to this? I have the cspire s5 and I unlocked it. It was reading Sims for a while but for some reason now it wont and I can't figure out what I need to do to get it to read my at&t sim again.
Hi All
OK... for years I have been using an S4 and been really pleased with it (UK model i9505 SIM locked to EE Network).
Recently I was given a Note3, so have been using this with my EE Sim and left the S4 sitting in a drawer for a few weeks.
This week I ported my number from UK EE to UK Vodafone - so the original contract SIM which I had in my S4 is no longer available to try as it has been disconnected!
Anyway - I sold my S4 to a friend for her son for Xmas and I thought I should wipe it before giving it to her. I had Android 4.4.2 with CWM and also had CerberusApp rolled in the ROM so when a factory reset/wipe was done CerberusApp would still be there. However after doing a wipe I inserted a PAYG EE SIM and it says no service and shows a no entry sign on the top bar. When I put in a Vodafone PAYG SIM or O2 PAYG SIM it shows strength of signal (i.e. no 'no entry' sign) but says that the phone is network locked - which is correct!
But I cant work out why the EE SIM (which is the correct network) wont work. I have tried the EE PAYG SIM in my unlocked Note3 and it all works OK - so I know it cant be a SIM problem.
In desperation I upgraded the O/S to Android 5.0 using Kies and all seems OK but still the same problem. I have checked the IMEI is all OK (*#06#) and its all good - so I am lost why this wont work. Its almost as though the phone has been barred on EE - but its my phone, bought from a work colleague, so not reported lost etc so there is no reason it should be barred.
Can anyone throw in some ideas, or even let me know if there is a way to remove carrier lock on the S4 without doing it through the carrier as my colleague is not with EE now either, so I will struggle to get them to unlock it.
Additional info:
Wireless works fine
IMEI Number shows correct
No SIM/non EE SIM inserted - says not registered on network but see signal strength on top bar
EE SIM inserted (correct for carrier lock) - get a no entry sign and no signal strength on top bar
Model - GT-i9505
O/S - 5.0.1
BB - I9505XXUHOD7
Build - LRX22C.I9505XXUHOD7
Any help would be great as if I cant get it working I will need to go buy one for my friends son before Xmas as I have had and spent the money
Thanks in advance
S
Bump... anyone got any ideas?
Hi all,
I have the dual sim S7 SM-G935FD running the XSP firmware. Rooted with the microSD Mod on Sim 2. It's being used in the USA at the moment. Sim 1 is AT&T and Sim 2 is T-Mobile. Both are USA sim cards. Everything goes through Sim 1 AT&T - Voice, Text and Data. Sim 2 is just for receiving calls only. Sim 1 is set at LTE/3G/2G and Sim 2 is 2G only.
Since day one I have this connectivity issue pertaining to data connection.
When Sim 2 gets a weak signal and eventually drops out, data connection on Sim 1 remains - everything works. However, when Sim 2 is picking up signal again, the data connection on Sim 1 drops out.
When this happens, the pull down notification will display that the data connection is on Sim 2 - as if the phone switches the data connection from Sim 1 to Sim 2 by itself. However, if I go to the Sim Manager, it will show that the data connection is still on Sim 1 like it originally was. At this point, the phone has no data. And yes, the phone is displaying conflicting information. Notification says Data is on Sim 2 but Sim Manager says Data is on Sim 1.
To fix this, I have to use the Sim Manager, select Sim 2 for Data. Wait a few minutes. Then, choose Sim 1 for Data again, then everything comes back normal. Data connects.
This is quite annoying in a poor reception area.
Troubleshooting steps that I have tried but they do not fix the problem-
Flash stock firmware no root
Use a different stock firmware - XEU
2 sim cards only with no microSD card on the back of Sim 2
Choose 3G/2G only for Sim 1 and 2G for Sim 2
Swapping Sim 1 and Sim 2
If I disable Sim 2 the problem goes away, but of course, what's the point of dual sim then?
I also have a S6 Edge+ Duos SM-G9287 but it does not have this problem.
Any ideas? Thanks.
Just wanted to add that I am experiencing this as well.
Man this is getting unbearable. Is there a specific forum for the FD devices? I'm thinking I might just return this phone while I still can.
Wow I was going to put something on boards as well with literally the exact same setup in USA. It gets way annoying when tmobile gets weak and switches even though I have it set on sim 1 data. I really hope there is a fix or else I might make the switch to htc10 (if they even get a dual sim) and keep my fingers crossed it works better. My S6 duos works better than this but I don't have additional memory with hybrid SD sim card on s7.
Sent from my SM-G935F using XDA-Developers mobile app
FYI -
I have been running XSG firmware. I just upgraded from APC8 to APD1 and the problem still remains.
Just trying to save some time for those of you who thinks upgrading will resolve the issue... it will not.
It is amazing how the S6 Edge+ Duos does not have this problem. Things went backwards for Samsung.
No problems here though mine is the G9250 dual sim version (HK).
G9250 is s6 edge is it not? We are on g935FD. It seems like I can never find the elusive perfect dual sim! Always some kind of bug! Might be heading back to my Xperia z5 premium. Can you guys confirm that it's wifi causing it? Seems like whenever I come off of a wifi network it never picks mobile data back up.
That seems like part of the problem too..as soon as wifi loses connection then it switches and then no more data
Sent from my SM-G935F using XDA-Developers mobile app
Has anyone fixed this? I have tried to flash a couple different modem firmwares to no avail. The T-mobile one won't flash as it uses a snapdragon chipset.
Mine was doing fine until I did a firmware update and now the data connection problem appeared. I was on a B6 firmware with a B9 modem on a AFG CSC so I will try to go back to this and report back whether the issue resolves. Any firmware starting D1 (tried D3, D6 and D8) causes the data connection lost issue. Even just going back to a B9 modem with the D8 firmware didn't help. What a pain in the rear...
Follow up to my previous post:
Officially, G935FD is a piece of crap. Tried every combination of modem/AP to get this work but no luck. Resorted to single sim mode for now.
I have this same issue. the only way it works is to manually select one sim in use at a time. I just removed the second sim and added a micro sd card for now.
craigg1 said:
I have this same issue. the only way it works is to manually select one sim in use at a time. I just removed the second sim and added a micro sd card for now.
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Did you update your firmware to a different CSC? That's when my issues started (went from AFG to BTU and even after going back the problem wasn't fixed)
What is your original CSC?
onurd said:
Did you update your firmware to a different CSC? That's when my issues started (went from AFG to BTU and even after going back the problem wasn't fixed)
What is your original CSC?
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Mine didn't work out of the box with stock firmware. I have since upgraded the stock firmware but haven't tried using two SIMs with the latest update. Maybe I'll test it over the weekend.
+1 on this bug existing for me since day one. I have been sticking it out and staying with dual sim as I don't have any other option. Kinda wishing I had just returned it... I have gone through hell trying to talk with people in India (where the phone is apparently from) about just getting the bug's existence up the chain. If only we could get a dev to take a look at our logs so I can have a reason to just root the damn thing already. Has anyone tried maybe flashing the sim manager apk from the s6 edge? Is there even a sim manager apk?
I have exact same problem with S6 edge+ dual sims. SM-G9287. Problem started since marshmallow updated. Didn't have this problem before under old android version. Has anybody found any fix yet? Right now, If I disable one of the sim, then it seems ok, but I need both sim to be on to receive call on either number.
My phone was stock firmware. Problem seems to be with Marshmallow 6.0.1 , not because of custom firmware.
vietmax said:
I have exact same problem with S6 edge+ dual sims. SM-G9287. Problem started since marshmallow updated. Didn't have this problem before under old android version. Has anybody found any fix yet? Right now, If I disable one of the sim, then it seems ok, but I need both sim to be on to receive call on either number.
My phone was stock firmware. Problem seems to be with Marshmallow 6.0.1 , not because of custom firmware.
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Kind of same problem here, but it happens only since I received the update to APD1.
I live on a border zone, so I have to force my LTE sim card to its own network. The second SIM is only on 2G.
When the phone loses its own network, SIM with LTE completely disappears, everything is moved to SIM 2G and of course I lose network. The problem is that the SIM with LTE is not seen anymore, even if I go back where the signal is, and the "mobile networks" option disappears in the Settings. I cannot do anything else the reboot the phone to see the SIM again.
Ciao Marina
I have similar issues with my s7 duos not the edge model. Sim1 tmobile, sim2 at&t. Sim2 seems to be the issue for me. Cell quality at my house is not great. I also have a xperia z5 premium dual that has similar problems mainly with lte. The samsung does hold lte signal but the bars are misleading. But the samsung, I woke up this morning and sim2 was offline no calls or text or data. Call quality with sim2 isnt as good either. I blame cell signal on that since the sony has similar issues. But I have seen it with sim1 set to calls and texts and sim2 for data the pull down says sim1 even though sim manager says sim2 is data. Wtf right? Disabling sim2 and reenabling gets it back working again but what happens when the phone does this is you lose data since sim1 data would be gsm only. The common theme is sim2? Also seems signal quality is a big factor. My CSC code is ECT which is Nigeria. I have not changed firmware yet other than the APD1 update. Ironically my xperia z5 dual didnt have these issues at all with lollipop the problems started with marshmallow. I am in the US by the way.
Temporary fix?
Looks like I accidentally ran into a temporary fix, that's working for me for the last few days. I'm on Vodafone for SIM1 and T-Mobile for SIM2, EU&US.
When I restart the phone and set SIM1 for data on LTE/3G/2G it connects, but looses the connection after a while and defaults to SIM2 (with no data). No BT, no WIFI, no data icon anywhere the screen.
When this happened, I ejected the SIM card holder and pushed it back in 2 seconds. Suddenly SIM1 was trying again to connect and the 4G icon appeared. At his point I turned on WIFI.
The weird stage: WIFI on, 4G icon flashing every 5secs – but it's working as it should. If I loose reception, it does not switch cards. Actually never switches card if I don't want to. I can live with the flashing 4G until we have an official fix.
Let me know if it works for you guys!
Im learning that mine is a lot more stable if I set everything to the same sim and not split up talk/text on sim1 and data only on sim2 like I was doing. Not sure if this is placebo for now but I have everything set to sim2 and so far so good with no drops.