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!

Debranded Desire won't connect to mobile operator

I bought a HTC Desire branded to Orange UK trough eBay when i was working there last month. The First thing i did was to debrand it using the 1.15.405.2 that i found on MoDaCa, and i bought a unlock key on eBay. This solution worked pretty well until the OTA update showed up, the i got the known WiFi issue. That was no biggie either, just installed the RUU of the 1.21.405.2 and the new Radio, and everything seemed to be perfect again
BUT THEN, two days ago, my phone suddenly lost it's connection to the my mobile operator . I tried to swap my sim card with another sim card, and the result was that my HTC Desire wouldn't get connection while my sim card worked well in the other phone. I also browsed trough my menus to try to find something that might be wrong, but no luck. If i tried to connect to my mobile operator manually, i got a message saying something like "SIM-card doesn't allow connection to this network".
Yesterday morning, i called HTC to try to find out if this might be a hw or sw malfunction, and he advertised me to do a factory settings restore and felt pretty confident that it only was the sw letting me down. I did as he suggested and boom, it worked...for about 5-6 hours, then it came back. As if that wasn't annoying enough, a factory settings restore didn't do the trick this time, and neither did a reflash with the goldcard. I even formated my mSD to be sure there wasn't any kind of virus on it.
So please, if anyone in here got a tip regarding sw, let me know. I'm helpless without my dear phone...

Hmmm this is my biggest concern... I'm just about to buy an ebay Orange Desire and flash it with a stock ROM and unlock it.... kinda worrying as I'm no Linux man really...

im not sure if its the same thing but i have lost conection to t mobile on my desire twice now. first time was fixed by re entering the apn. this time no change. the differance is mine is un branded. i also cant do mms any more.

Unbranded and debranded, same ****, isn't it? Niter means branded...
Seems like i'm not the only one with this problem: http://forum.vodafone.co.uk/topic/5...nt-re-connect/page__view__findpost__p__405655
Lots of Vodafone users in that forum has similar issues, but most of them seems to have a workaround by turn off the back on, or go by airplane mode to get signal back, tat doesn't work for me. I tried to flash my phone once more, but still no luck.
I'm considering a root operation and install android 2.2 aka froyo, but i'm not even sure if that is possible since i got the bootloader version 0.80...

ive just got mine working again by resting the apns to default.
mms still not working though. i hope its not a voda problem i just paid off t mobile a years contract to join voda due to terrible reception and crap tech support.

what is that, and how do you do it? I would guess that a reset to factory default and/or a complete reflash would take care of such, whatever it is...

Yep I was about to ask the same thing! what is it and how do you turn it on/off?

go to settings - wirless & networks - mobile networks - access point names - then press the menu key and hit reset to default.
hope this helps you

That did the same thing as a "reset to factory defaults", but still doesn't work

I've an unbranded unlocked desire on 3 UK with original firmware and mine does drop out occasionally but always comes back perhaps its a desire quirk !
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Suppose so, but unlike you and many others, mine doesn't come back I was hoping for a fix for this issue, but i'm afraid were talking about hw malfunction, let's hope i'm wrong...

Little update, just followed this guide, but that didn't change anything. As far as i know, i now got some kind of rooted version of HBOOT 0.75 and fw.ver. 1.15.405.4, dunno about radio version. But it also says that i'm not able to install a custom rom with this rooted version, but i might be able to completely root it now and then install a custom rom?

Yet another update, i did install the 2.2 Froyo following this guide, and unlike the HTC roms, this one indicates that i do have full/optimal connection to my mobile operator, but it still won't let me call, just replies with 'Mobile network not available'.
I kinda courages me to scream out loud ****!!! Yes, i mean it...

Feedback would be nice
Just a thought, may i be that the guy i bought the phone from could have reported it as stolen with the intention of getting an insurance fee? And as a result of that, my phone have been closed by the operator? Don't even know if they mind doing such across the border. So the question would be: Is there any way to find out if my phone has been remotely closed?

Call your carrier.... they will be able to tell you if the phone is connecting to the nextwork correctly... ask them if not... why not?

I second that suggestion, try calling your carrier. Also I have found that switching the internet on directly through settings rather than using the widgets solved my connection problem.
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Yep, i got contact with the seller from eBay, and he is very helpful, so he will do what he can while i will call my carrier first thing in the morning. Seems like there might be a glitch here, but i'll keep you updated on my progress.

argh, it seems like i wont get anywhere with my phone. I'm considering trying to change the IMEI, i know it's illegal, but i paid £360 for this device, and atm it's useless to me. If i only knew how tho change the imei, not exactly easy information to obtain, not even with google...

hulkhaugen said:
argh, it seems like i wont get anywhere with my phone. I'm considering trying to change the IMEI, i know it's illegal, but i paid £360 for this device, and atm it's useless to me. If i only knew how tho change the imei, not exactly easy information to obtain, not even with google...
Click to expand...
Click to collapse
So have you found out why your having problems?

ah, sorry, thought i already told u guys, lol. Well, for some reason the phone is IMEI locked. The seller says that he did call to lock a sim card when he lost his iphone, and it might be related since it's the sim that was suppose to be in my phone. however, i think he either claimed the phone stolen to commit insurance fraud, or it's simply stolen. Another thing i came across was that the operator might blacklist the phone if it's unlocked without their blessing, don't really know if they can do that.
Either way, the only way for me to make this phone work is to convince the police that it's not stolen (i need a recite for that which he won't provide me), or to change the imei code with my "awesome" hacking skills...

Intermittent service after unlocking by IMEI

Hello there, this is my first post here, I searched all the forum but could not find any solution to this.
I have a Optimus G E987. Unrooted, unflashed, with original rom, didn't do anything to the phone yet as I recently got it from a friend.
My friend was under a different carrier that I am. Since his contract had expired I was free to contact his carrier and get the unlock code to unlock my phone by IMEI. After succesfully unlocking the phone, I inserted my old sim card, it was a Standard Sim so I had to trim it to fit on the Micro Sim slot the Optimus G has.
Everything worked beautifully until I started having signal issues, both data and phone.
It does not happen everywhere, but it definetly happens at places I had perfect signal with my old device like my work place. To solve it, most times I can go to the network settings of the phone and choose the auto select option. This restores the service but I lose it again in a few minutes. Sometimes this does not fix a thing and I can not recover service at all.
I know its not a hardware issue as my friend had no signal problems whatsoever. Maybe I need to set up something in my phone to get it to work properly but I am completely clueless. I suspect it may be the sim card as well.
Any help will be greatly appreciated.

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

More than once an hour 'no signal' and back button acting up?

Hi, I've problems with my device I bought online. Mainly the cellular signal keeps dropping to 0 rendering the service to be unusable. I wanted to make a thread to know if we could fix this ourselves because I didn't want to send this back to the store.
Here's the list of failures I've tried:
1. Tried to insert my sim to either slots
2. Inserted another sim card
3. Inserted both sim card and tried to swap it's slots
4. Deactivated Volte
5. Tinkered with cellular data APNs. (Mainly copied the settings from my other phone)
5. Restored factory settings
6. Repeated these steps after restoring factory settings
Also, Whenever I'm browsing media and whatnot, the back button seems to trigger itself. (once or twice every 20 minutes while watching a video).
Miui 9.0.2.0 (Philippines, Globe sim card [Other networks have the same problem])
I haven't unlocked bootloader, rooted or installed custom roms because I didn't want to void warranty and waste my time and money.
I'm hoping we could fix these problems ourselves. Any thoughts of what I should do? Should I just return this?

my "no signal" story: after 3 weeks my new mi6 got no signal anymore. i read many topics on xda, and thought it might be a software issue. although i decided to head to my mobile provider and asked for help. i got a new nfc simcard which solved the problem till now. it seems there are some issues with old european simcards on new chinese mobiles. the simcard just crashes and you loose signal.

bendep said:
my "no signal" story: after 3 weeks my new mi6 got no signal anymore. i read many topics on xda, and thought it might be a software issue. although i decided to head to my mobile provider and asked for help. i got a new nfc simcard which solved the problem till now. it seems there are some issues with old european simcards on new chinese mobiles. the simcard just crashes and you loose signal.
Click to expand...
Click to collapse
Thanks for the reply, I'm gonna have to try and change my sim. The back button is probably a defect. It's getting worse.