Develop Bugs

No Signal on Htc Dash

i got the sim unlock on my dash, but the sim unlock just worked for three days, but then i dont know what happened and i dont get signal, i tried to change the ROM and that doesn.t work, so please if you can help me.
thanks (sorry for my english)

forexddr said:
i got the sim unlock on my dash, but the sim unlock just worked for three days, but then i dont know what happened and i dont get signal, i tried to change the ROM and that doesn.t work, so please if you can help me.
thanks (sorry for my english)
Click to expand...
Click to collapse
Try running Connection Setup it should be under accessories.
If you are using AT&T select that network.

Eliphas said:
Try running Connection Setup it should be under accessories.
If you are using AT&T select that network.
Click to expand...
Click to collapse
i already did that, and that didn't work
the phone recognizes the sim card but doesnt want to recive signal

Try a different SIM, also if on contract phone up your carrier and request a new sim card you'd be suprised they do get naffed and the timing may just be a coincidence?

forexddr said:
i already did that, and that didn't work
the phone recognizes the sim card but doesnt want to recive signal
Click to expand...
Click to collapse
make sure that your phone is unlocked and try reflashing the ROM that's all I can think of.

forexddr said:
i already did that, and that didn't work
the phone recognizes the sim card but doesnt want to recive signal
Click to expand...
Click to collapse
Have you check out airplane mode is off? or the phone cellular radio on? That's on your comm manager options.

i already check the airplane mode, also a tried with another sim card, even simcard of anothers carriers and nothing

External Antenna??
Have you hooked it up to an external antenna lately? If you have, it may not be reconnecting to the internal antenna because of the adapter used.

Ditto. The first 2 Dash's I had went through this same problem. I used an external antenna and adapter when I was back home. Both of them stopped receiving signal. I thought it might be the ROM, so I reflashed the original T-Mo Rom, but to no avail. I even flashed other ROM'S from this site, and that didn't work. Finally after returning 2 devices, I finally figured it out that it must be the antenna. (although on the 3rd Dash the power button stopped working,so T-Mo swapped it out for a BlackBerry)
I urge you, if you can, DON'T use an external antenna. If you must, use very carefully, and avoid hitting underlying circuitry when plugging/unplugging the adapter. I think thats what happened to mine.
I am not saying you are using an antenna, it just sounded so similar to my prior problem. The only thing I can tell you, if reflashing doesn't work, call up your provider and ask for a replacement. If you don't have a provider, through whom you have means of replacement, I would check if internal antenna or radio circuitry is still good.
Good luck. Let us know outcome.

forexddr said:
i already check the airplane mode, also a tried with another sim card, even simcard of anothers carriers and nothing
Click to expand...
Click to collapse
Try flashing a stock ROM which can be found here:
http://forum.xda-developers.com/showthread.php?t=381726
See if that works, good luck!

T-Mobile UK

whenever i get a message from t-mobile it says its sent from one of my facebook contacts. not even someone i have in my phone contacts, just someone i have on facebook.
any ideas how to rectify this?

I get this on Orange too lol
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk

me too on t mobile, its bizarre! heard a lot of reports of this. haven't tried to find a fix is there one?

Me too. On Generic rom too.

See my post, started yesterday morning
http://forum.xda-developers.com/showthread.php?t=659385

btw. anybody know whats the default PIN code for tmob sims? or do i have to ring them up to get it ?

cez10 said:
btw. anybody know whats the default PIN code for tmob sims? or do i have to ring them up to get it ?
Click to expand...
Click to collapse
Google is your friend! Search for T-mobile SIM PIN.... if you had done you would have found this in the first post.. probably quicker than posting here & waiting for my reply too
The PIN code for your T-Mobile SIM card is printed on the delivery slip that comes with the SIM card.
If in doubt, try T-Mobile's default PIN code for SIM cards, which is 1210.
Note that you get three tries to enter the PIN, and your phone will be locked if you fail after these tries. You'll then need to contact T-Mobile to get a PUK code.

1210 or 1212 i think ... dunno should be on the SIM pack on the letter.

zippyioa said:
Google is your friend! Search for T-mobile SIM PIN.... if you had done you would have found this in the first post.. probably quicker than posting here & waiting for my reply too
The PIN code for your T-Mobile SIM card is printed on the delivery slip that comes with the SIM card.
If in doubt, try T-Mobile's default PIN code for SIM cards, which is 1210.
Note that you get three tries to enter the PIN, and your phone will be locked if you fail after these tries. You'll then need to contact T-Mobile to get a PUK code.
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Click to collapse
hehe thanks lol, i actually thought about googling it after ive written a post, suppose it was just a silly mans reaction to write here instead of googlin and yeah 1210 worked thanks anyway guys

thanks guys, i needed the pin too.

No Sim Detected

Hey guys,
So I just got a used Note 2. When I picked it up, it was working fine. We then reset it and I tried my sim card and the no sim warning came up. Tried the sellers sim and same thing. I bought it anyway thinking that I could fiddle around with it. I've seen some other threads about this problem and most people suggest flashing a full Rom in ODIN, but there weren't ever any follow up posts to confirm if it worked.
I've tried flashing the emergency restore firmwares, but I still have this problem. I don't think the SIM contacts are damaged since I can see them and they look fine. Is there anything else you can suggest for me to do? Or am I stuck with a really small tablet that has no phone purposes?

It has not been blocked? Or maybe it's network locked?
Sent from my GT-N7105 using xda app-developers app

You can try Azira27's patch, it helped me when I had a similar problem. For me it was saying "not registered on the network" when making a call.

dazza7111 said:
It has not been blocked? Or maybe it's network locked?
Sent from my GT-N7105 using xda app-developers app
Click to expand...
Click to collapse
I checked the IMEI, doesn't seem to be blocked or blacklisted. And if it were locked, it would ask me to input an unlock code, right?
Kremata said:
You can try Azira27's patch, it helped me when I had a similar problem. For me it was saying "not registered on the network" when making a call.
Click to expand...
Click to collapse
I get that same error when I try to check mobile network settings. I'll definitely take a look at this, hopefully it helps! Thanks for that, I would never have found it.
I don't know much about how the EFS partition works, but it seems to play a role in the radio performance. Does anyone think my EFS partition is borked? I did try the full emergency firmware restore though...

Nope, the Azira patch doesn't do anything and neither my Rogers or my girlfriends sim card work. I'm starting to think the sim tray may be damaged, although the contacts are straight and present.

Try with a new sim card, your one is maybe too old.
Regards

Sorry guys, it is the sim tray. Two of the pins are slightly bent and broke off when I tried to fix them. Looks like I'm ordering a new sim tray since the seller is refusing to reply to my messages that he sold me a damaged phone. Oh well, it seems easy enough to replace.

Should I upgrade my Sim Card?

I have been reading some really scary things regarding Sim Cards and viruses or malware or whatever and am wondering if I should change my sim card. A part of me thinks that the idea of a Sim card being infected is silly, but at the same time, I really would not know, lol.
If I were to upgrade my sim card...
Would it put my unlimited data at risk? (Verizon)
How would I go about changing my Sim? Could I use the sim that came with my note 4?
Also, should anyone even worry about their sim cards? o .0

SIM cards are free at corporate stores and you will not lose your unlimited.
Just take your phone in and ask for a new SIM. If they ask why tell them you've been getting errors or something. It takes like 5 minutes if there's no wait.
I don't think you can do a SIM swap online but you probably can by calling customer service from a different phone
Edit: If you call CS for a SIM swap make sure you have your other SIM on hand for the ICCID

Ah.. I see!
I actually tried to do a sim swap at home because google made it seem simple; however, it never worked to my knowledge. At first, I popped in the sim and it said that it was setting up, but never finished. While my phone was trying to activate with the new sim card, I went to the verizon wireless website and tried to activate my phone there, but could not find my phone listed in the section with previously activated phones. I did not try the option to activate a phone that wasn't registered already and just backed out. I did not - to my knowledge - see any screen indicating plan changes so I'm assuming that I did not do anything that could compromise my plan(?). When I dialed the number for activating sim cards, it went to the visual *611 screen and claimed that it did not recognize my number and asked me to log in to my verizon account. After doing so, nothing seemed to happen and it just sent me back to my home screen.
In hindsight, I probably should have stopped after it asked me to log in to my verizon account, but I suppose now all I can do is wait and ask questions to ease my anxiety x_x

JippleStar said:
Ah.. I see!
I actually tried to do a sim swap at home because google made it seem simple; however, it never worked to my knowledge. At first, I popped in the sim and it said that it was setting up, but never finished. While my phone was trying to activate with the new sim card, I went to the verizon wireless website and tried to activate my phone there, but could not find my phone listed in the section with previously activated phones. I did not try the option to activate a phone that wasn't registered already and just backed out. I did not - to my knowledge - see any screen indicating plan changes so I'm assuming that I did not do anything that could compromise my plan(?). When I dialed the number for activating sim cards, it went to the visual *611 screen and claimed that it did not recognize my number and asked me to log in to my verizon account. After doing so, nothing seemed to happen and it just sent me back to my home screen.
In hindsight, I probably should have stopped after it asked me to log in to my verizon account, but I suppose now all I can do is wait and ask questions to ease my anxiety x_x
Click to expand...
Click to collapse
You have to call that number from a different phone. Your phone doesn't hold your phone number so just popping a new SIM won't do anything.
You could try to do the "activate device" thing online but I don't know if there's an option to use a different SIM.

PizzaSauce said:
You have to call that number from a different phone. Your phone doesn't hold your phone number so just popping a new SIM won't do anything.
You could try to do the "activate device" thing online but I don't know if there's an option to use a different SIM.
Click to expand...
Click to collapse
Cool! Now I know
Thanks for your incredible fast help!

Invalid/missing Sim card

I have a T-mobile G3 (obviously) that I've had for about a year and recently it has been saying that the sim is either invalid or not installed. This is the same sim card I have been using for a while. Occasionally after several restarts and removals/re-inserts I can get it to work for a bit but then it will to back to invalid sim. Does anyone have any suggestions of what the problem might be or how to fix it? I get both the invalid sim and sim not installed messages.

Is a SIM card from a different carrier installed? Have you tried a new SIM, performed a factory reset, or possibly shimmed the card so it fits tighter in the slot?

Nope. T-mobile sim card and a T-mobile phone...all my previous phones I have rooted or at least unlocked or something. I have done absolutely nothing to modify this one from stock.
redduc900 said:
Is a SIM card from a different carrier installed? Have you tried a new SIM, performed a factory reset, or possibly shimmed the card so it fits tighter in the slot?
Click to expand...
Click to collapse

did you figured out the problem? It just started happening to me.. super annoying...

Nothing that I tried worked. Ended up deciding it was a hardware issue that wasn't worth trying to fix.... I was thinking of replacing the Sim tray but that's close to impossible on that phone. Ended up just trading it in for a G4

schneiderm3709 said:
Nothing that I tried worked. Ended up deciding it was a hardware issue that wasn't worth trying to fix.... I was thinking of replacing the Sim tray but that's close to impossible on that phone. Ended up just trading it in for a G4
Click to expand...
Click to collapse
Old topic but the same thing started happening to me this week. At first, it wouldn't happen till I would reboot the phone and it was pop up with the no SIM card symbol and subsequent reboots wouldn't clear it.
EDIT: Tmo D851 with same Tmo SIM card since purchase, on Tmo network this whole time.
Surprisingly, flashing an old backup img would fix the issue for a day or two and upon another reboot, it would be back.
Now this morning, phone was sluggish and locking up, rebooted it and the dreaded symbol was back and no matter which backup img I used, it wouldn't clear. I had thought it was one of the app permissions I had blocked (though none were system apps) and reset all permissions, cleared all caches, thinking it was a software issue. Still wouldn't clear.
I even went so far as to do a complete factory restore via the LG flash tool, right back to out-of-the-box-new, and STILL the no SIM card error was there. Tried rooting and flashing another backup, still there. Add in numerous rinse and repeats of various steps and still there.
Went to T-Mobile and they swapped for a new SIM card and it was still popping up. They did the normal, factory restore from the settings menu, still there.
I was starting to think Tmo was blocking my account due to my data usage (paranoid, I know...) and asked if my account was being blocked or my number and was told nothing listed or said.
Of course, the 1-yr warranty on this phone just ended in September and I'm high and dry with getting this fixed.
Also of note, none of the pins are broken, misshaped, flat or other. I even tried placing a business card piece on top of the SIM card to try and see if it wasn't making contact, still no joy.
The SIM card does work in one of my old Tmo phones, so it's not the account.
Just sucks that this phone is now crippled from such a silly mechanism as such, first time with an error/problem like this with SIM card phones. And I kept this phone in pristine condition, no drops, water, glass protector, etc. And it has never been dropped or other, just started up as such... My wife has the same exact phone and no problems with her's. Yet.
schneiderm3709, did you trade it in at a Tmo store? They took it with the SIM card error or you didn't mention it? Did they take it with the SIM card error at a reduced value? If either, what did you get for it?
Thanks.

Yeah, I determined that it wasn't the sim card either. I'd have no problem putting my sim in another phone, and another sim in my phone would have the same issues.. All the flashing and everything did nothing for me. I also tried a piece of paper on top of the sim card when I slid it in to help it make better contact. This worked for a little while but eventually didn't do anything. My hypothesis is that one of the pins was going bad/had a crack, and when the sim card was installed it would lose contact, and when you took it out it would pop back up to where it's supposed to be, so you couldn't see the problem without microscopic inspection.
I told T-mobile exactly what was happening with mine, and they tried all the same things they tried with you, also still to no avail. Their requirements for trade in are very simple actually, 1: NO Water Damage, 2: NO Screen Damage (General wear scratches are okay), and 3: The device turns on. Mine did all of this, just wouldn't connect to the network. They gave me $100 credit towards the new G4. I Love it and don't know if I'd ever be able to leave LG world....Unless maybe the droid turbo somehow comes over to T-Mobile. I don't know if that trade in value has changed now since the LG V10 came out or not. Hope this helps. Let me know if you have any other questions.
JustLok said:
Old topic but the same thing started happening to me this week. At first, it wouldn't happen till I would reboot the phone and it was pop up with the no SIM card symbol and subsequent reboots wouldn't clear it.
EDIT: Tmo D851 with same Tmo SIM card since purchase, on Tmo network this whole time.
Surprisingly, flashing an old backup img would fix the issue for a day or two and upon another reboot, it would be back.
Now this morning, phone was sluggish and locking up, rebooted it and the dreaded symbol was back and no matter which backup img I used, it wouldn't clear. I had thought it was one of the app permissions I had blocked (though none were system apps) and reset all permissions, cleared all caches, thinking it was a software issue. Still wouldn't clear.
I even went so far as to do a complete factory restore via the LG flash tool, right back to out-of-the-box-new, and STILL the no SIM card error was there. Tried rooting and flashing another backup, still there. Add in numerous rinse and repeats of various steps and still there.
Went to T-Mobile and they swapped for a new SIM card and it was still popping up. They did the normal, factory restore from the settings menu, still there.
I was starting to think Tmo was blocking my account due to my data usage (paranoid, I know...) and asked if my account was being blocked or my number and was told nothing listed or said.
Of course, the 1-yr warranty on this phone just ended in September and I'm high and dry with getting this fixed.
Also of note, none of the pins are broken, misshaped, flat or other. I even tried placing a business card piece on top of the SIM card to try and see if it wasn't making contact, still no joy.
The SIM card does work in one of my old Tmo phones, so it's not the account.
Just sucks that this phone is now crippled from such a silly mechanism as such, first time with an error/problem like this with SIM card phones. And I kept this phone in pristine condition, no drops, water, glass protector, etc. And it has never been dropped or other, just started up as such... My wife has the same exact phone and no problems with her's. Yet.
schneiderm3709, did you trade it in at a Tmo store? They took it with the SIM card error or you didn't mention it? Did they take it with the SIM card error at a reduced value? If either, what did you get for it?
Thanks.
Click to expand...
Click to collapse

Same thing started happening to me. I am not sure if I should replace it. Any suggestions?

Maaz20 said:
Same thing started happening to me. I am not sure if I should replace it. Any suggestions?
Click to expand...
Click to collapse
I have the same problem too! Really frustrating, I've tried everything and I cannot pinpoint the problem.

I found the following solution by stevenpurwadipura on Reddit
Guys, i found a fix for this. I just figured out this trick, so i don't know if this is a real fix or just a luck. Go to settings - apps - choose option - configure apps - modify system settings - choose option - show system - select NETWORK - change it into 'No'. Then restart your phone.
I restart my phone and it detects my SIM again. But as I said, I'm not too sure if this is really a fix or just a luck.
Click to expand...
Click to collapse
It's currently working a treat for me!

Invalid Sim Card error in LG G3 tmobile
Hi.. I'm getting the invalid sim card error after restarting my Lg g3. The sim card works fine on my husbands phone.. so guess its same issue as yours. Did you have a valid warranty when you got the 100$ credit from Tmobile for Lg G4?
schneiderm3709 said:
Yeah, I determined that it wasn't the sim card either. I'd have no problem putting my sim in another phone, and another sim in my phone would have the same issues.. All the flashing and everything did nothing for me. I also tried a piece of paper on top of the sim card when I slid it in to help it make better contact. This worked for a little while but eventually didn't do anything. My hypothesis is that one of the pins was going bad/had a crack, and when the sim card was installed it would lose contact, and when you took it out it would pop back up to where it's supposed to be, so you couldn't see the problem without microscopic inspection.
I told T-mobile exactly what was happening with mine, and they tried all the same things they tried with you, also still to no avail. Their requirements for trade in are very simple actually, 1: NO Water Damage, 2: NO Screen Damage (General wear scratches are okay), and 3: The device turns on. Mine did all of this, just wouldn't connect to the network. They gave me $100 credit towards the new G4. I Love it and don't know if I'd ever be able to leave LG world....Unless maybe the droid turbo somehow comes over to T-Mobile. I don't know if that trade in value has changed now since the LG V10 came out or not. Hope this helps. Let me know if you have any other questions.
Click to expand...
Click to collapse

Invalid Sim
I too have the same problem for sim 2 in my LG G3 D858HK. Factory data resetting did not solved the problem. I do not know what is the reason, But now i could solve it by resetting network settings. Software version - Android 6, D858HK 30b, In back up and restore there is an option to reset network settings. Done this for sim 1 and sim 2. Problem solved.

i am having this invalid sim problem after upgrade to 30e;
I found a fix for this. i don't know if this is a real fix but just flipping from yes to no and vice versa followed by reboot seems to work consistently.
i copied it. credit should go to the original poster
Go to settings - apps - choose option - configure apps - modify system settings - choose option - show system - select NETWORK - change it into 'No' or vice versa (from no to yes). Then restart your phone.
Click to expand...
Click to collapse
Never again will I ever buy an LG phone. burnt thrice now ( Nexus 4, 5 and now this damn G3)

Problem solved.today i recived a lg D851 with same problem,i checked every thing was fine in phone setting,software version was installed 6.0.so i just flashed it with V10c version after flash i have no error and have good network. sorry for my bad english.hit thanks if its helpful for you.:angel::angel:

Nomi1987 said:
Problem solved.today i recived a lg D851 with same problem,i checked every thing was fine in phone setting,software version was installed 6.0.so i just flashed it with V10c version after flash i have no error and have good network. sorry for my bad english.hit thanks if its helpful for you.:angel::angel:
Click to expand...
Click to collapse
Hey, you have a link to V10c? Going to try to flash before giving up. Thanks

I found the solution go to settings > Network > More > Mobile Network > System Select > Network Mode > Global

It worked!!!
I experienced the same problem and tried most of what was suggested. Finally the following steps posted by Ayebale fixed the problem .
Ayebale said:
found the solution go to settings > Network > More > Mobile Network > System Select > Network Mode > Global
!
Click to expand...
Click to collapse

Same thing happening to me. I took it to a t-mobile store and they said the network upgraded and some phones are now obsolete because of it. Also, because they don't have contracts anymore, I cant get any deals on a new phone even though they didn't warn me that my phone would stop working.

Hello everyone,
First of all thanks to all who had solutions. All worked temporarily. I have a stock TMO D851 30G with the stock MM 6.0 TMO ROM. It has worked awesome for the past three years I have had it. I have it unlocked via IMEI and no root....yet. I started having this issue about a 4 months ago. I sent the phone to LG and the "techs" there checked the phone and found no issues. Still having the same issue. However, I found that if I restart in safe mode it acknowledges the SIM and works fine. Use it in safe for about 30 minutes and restart. I get my network back. I am stuck. I figure there is something in the firmware or ROM that is causing a conflict. Any ideas???? I am completely fed up and out of ideas
Sent from my LGE LG-D851 using XDA Labs

Update to this problem. It is actually a hardware issue. However it does not have to do with the sim Tray at all. It is due to a bad connection on the processor. Took mine to a repair shop here in my town in mexico. He did a reball on it (flux and reheat of the processor) this was two weeks ago and it has completely fixed the issue. Hope this helps the group out. Thanking all of you that threw in your two cents. It was all helpful