LG G3 D855 : loosing specific carriers signal - G3 Q&A, Help & Troubleshooting

Okay, first a little prespeach. I bought used LG G3 phone (which is working perfectly btw) in my born country (Bosnia), and used my SIM card without any issues, signal always was full and even I used internet without any problems, that was like 1 week long. Cause I study in diffrent country (Croatia) and I had to go, I inserted my other working SIM from that country and signal appears like 10 seconds and than searching for signal. First I thought it was damaged PIN connectors but than I insterted again my SIM from my born counry and it again was working fine for whole day. Then I went to that carrier (in Croatia) to replace my SIM card (I thought maybe SIM damaged), but when I inserted that new SIM, everything was same. I tried to buy other carriers SIM cards from Croatia, but everything was same, signal is there for max 10 minutes and than there is sometimes warning sign that said: Please insert working SIM card and phone must restart and when it restarts and again searching for signal. Currently I'm in Croatia and using my SIM from Bosnia (in roaming) which is working perfectly without any signal drops and searching signals. Before this phone, I used S3 Neo dual SIM and both cards worked fine without any problems.
So, my problem is not damaged pins, cause my SIM card is working perfect (from Bosnia) but any SIM card from Croatia is losing SIM signal. And my phone is unlocked (I think so).. Any advices what to do, or to go to the phone repair shop? Thank you!

Related

unlocked phone suddenly says 'invalid sim'

I broke and replaced the screen in my unlocked upgraded flashed-ROM wallaby and the unit now starts up and reports invalid SIM.
Is there any solution or should I re-flash the rom again and see if that works, hope for the best?
Try the SIM in a different (unlocked) phone, to make sure the SIM isn't fried. If the SIM is fried, you can get a new one from your provider. SIMs do get fried sometimes -- it happened to me a couple months back. Fortunately my provider (Cingular) has a shop just down the road from me, and they burned a new SIM in 5 minutes.
I apologise, I should have said
Sorry, I should have said, it does work in another machine and as I said, it did work immediately I used the xda flashing process to upgrade the ROM in this very unit before I dropped it.
Everything else in the new ROM seems to work which makes it infuriating that it wont recognise the SIM. I even tried calling T-Mobile and asking them if they could see the SIM on their network and they couldn't.
(I even have one of those SIM copying devices they send you free for some unknown reason when they want you to upgrade your service to some kind of higher level SIM card. I was wondering if I should try to use it again but as mine does work, this, like the whole copying device, seemed a bit academic)

Tmobile Compact IV big trouble!

I got a Tmobile compact IV (diamond) sevral weeks ago in nerthlands. and flash the rom successfully.
However ,there is a boring issue that the machine always went to death when the TMOBILE sim card inserted in. while i use other sim cards it can work!!
I really dont know what is the hell going on with the fuking machine. I even unlock the sim lock and pay for 15 euros!! The mater still exist~~
forgive my bad english . and anybody can help me ?
maybe you have a faulty sim card?? try another t mobile sim card - if you unlocked it and all other sims work it should be fine
Up to what state it boots up before dying.
i also got my t-mobile phone recently.
when i inserted the t-mobile sim card in, it froze the mobile while searching for network...
t-mobile told me that is because my sim card from t-mobile is not activated yet and it usually takes 48 hours before I can use it.
when did you choose to "activate your contract"? did you choose to activate it immediately?
you can try the t-mobile sim card on other phone. it must also show "limited service".
I guess the problem is not your phone.

Galaxy nexus wont get a phone signal till i put sim in another phone

Hi,
My stock Nexus will display emergency calls only till i take sim card out put it in another phone then that phone will get signal and then put the sim back in Nexus and it gets signal until i go into a no signal area then i have to repeat process to get signal back.
This is really strange and a restart or just taking sim out and in again doesn't work.
After this has all been done i get full signal and its fine till i lose signal then have to start again only started happening a few days ago.
can anyone please help.
Get a new sim card? Update/switch radios?
I actually had the same error, for me switching sim cards helped.
Try it.
It sounds like its the SIM not your phone.
The sim works fine in other phones though
blair287 said:
The sim works fine in other phones though
Click to expand...
Click to collapse
But the fact that the SIM doesn't work in your GNex until it's put into another phone means it's the SIM's problem... how would the GNex know that it's been put in another phone rather than just taken out and put back in?
blair287 said:
The sim works fine in other phones though
Click to expand...
Click to collapse
Maybe its a dumb sim?
Really try another sim
Galaxy Nexus AOKP m5 Franco kernel m3
k tried a Virgin sim (im on three) and that seemed to work fine so im going to ask for a another sim card from three.
Was the problem anyhow solved? It looks like I'm experiencing the same problem, but GN doesn't read my sim card that is readable in other phones and reads other sim cards.
for some random reason after 3 days it stopped doing it i think it was the three network not the phone or sim.

One V not recognizing any sim card, sim slot is dead?

Hey, I have my One v for about half a year now, and it worked perfectly with one sim, few weeks ago I changed to a different service provider, and the sim worked fine too.
Few days ago, I look at my phone and the bars just start to disappear, until it got to a state where I couldn't receive calls, SMS, surf the 3g web and so on. This morning (and yesterday's evening) I had bars fro few minutes, then it simply showed the name of the provider in the notification area, now there's just "no service". I tried swapping Sim's with my sister, which has the same phone - my sim worked on her phone, her sim didn't work on mine.
So my lucky guess is that the sim slot is dead, I wanted to know if there's any solution I should try before sending it to a store to find out wat is happen, or I should just do that and forget about it. Also, if the sim slot if dead, how much will it cost approximately to fix it?
Slot may not connect - maybe it's time to use "toilet paper solution" (as originally named for Nokia N900)? You should make piece of paper the same size as sim card and insert it with SIM card to slot to hold it with connectors and disallow separation. If not working experiment with paper with other thickness or size. Try this one and say about any changes.
And try with prepaid / old card
it may seem obvious, but have you already tried cleaning the sim slot by blowing all the dust out of it? that used to fix this sort of problems in my dumbphone.
Which nmforu
I owe my life to trees everywhere. Thank you dskowronski! it worked! tried doing what you told me, second time it worked - then I tried without the paper and voila!

New SIM card not detected

I lost my P3XL on a accident and recently, after 8 weeks, I got it back when someone found it laying in a Bush near the place where the accident happened - it's summer time fortunately and except a little dirt the device is fine, everything is working and no water damage!
The person who found it saw the emergency information and brought it to my address, big luck!!! 8 weeks outside, 3 times heavy rain, the fabric case it had was moulding but the device itself is just fine, crazy!
When the device was lost I locked the Sim inside the device via the provider's homepage, so I got a replacement SIM a little while later... The usual stuff what people do in situations like this
Now the problem I have is the new Sim, the provider told me that it's a new generation of Sim and the module on the Sim looks different, it's silver and the module (chip on the Sim card) has a different setup, the lines are very different! According to the provider (O2 germany) the Sim uses less electricity than the previous generation and unfortunately it's not detected by my device at all, no reaction, nothing, like there's no Sim inside...
- I reseted the network settings
- factory reseted
- upgrade to Android R
Nothing helped, however the Sim is detected immediately by my 3 other Android devices and the Pixel detects all 4 Sim cards I tried, it's only the one Sim I have a contract with that makes issues. The provider sent a new replacement Sim which looks exactly like the previous one and is also not detected.
I don't think it's in relation to the weeks it was laying outside as it's only this specific Sim card, again, the card works in all others device and the Pixel 3 XL detects all other Sim cards I tried...
I luckily found a provider that offers eSim so I could register at least the virtual Sim to make calls and have data (I wanted something that is prepaid and where I can leave every month and is not to expensive, it's 'simquadrat' now)...
It's like the hardware is not capable to detect certain Sim cards with a specific module (chip on the Sim).
Any ideas, someone else with this specific issue?
Interesting problem. Do you think the provider has blacklisted your device on their network due to the supposed loss of the phone? The sim needs to detect the IMEI and perhaps that's become the issue?

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