Develop Bugs

Phone buggy...hardware or software?

We have 3 Tmobile Dash phones. One of them is very buggy, both on Kavana 6.1 and still after updating to 3volution 6.5. It reboots, crackles, freezes requiring battery pull, it's getting impossible to use. I'm thinking it's a hardware problem since the other 2 are fine running the same rom. We've switched batteries and sim cards to see if that was the problem. It appears to be the phone. Anything else I should try before giving up on it? Are there any utilities that might help?

I may have screwed up... I downloaded and flashed the official Tmobile rom and now it won't boot.

winda said:
We have 3 Tmobile Dash phones. One of them is very buggy, both on Kavana 6.1 and still after updating to 3volution 6.5. It reboots, crackles, freezes requiring battery pull, it's getting impossible to use. I'm thinking it's a hardware problem since the other 2 are fine running the same rom. We've switched batteries and sim cards to see if that was the problem. It appears to be the phone. Anything else I should try before giving up on it? Are there any utilities that might help?
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Click to collapse
Did you try to hard reset? If not try that and see if that can help.

winda said:
I may have screwed up... I downloaded and flashed the official Tmobile rom and now it won't boot.
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Click to collapse
No you haven't if they are T-mobile branded. Try to get in bootloader and flash one of the official roms here http://forum.xda-developers.com/showthread.php?t=381726.

I have it flashed to the latest official T-Mobile rom now (yes, it's a T-Mobile Dash.) I can get it to boot maybe once out of 10 tries and then it only stays on for a couple of minutes before shutting off. Most of the time it displays the T-Mobile logo as it's booting then makes a weird sound (like the start-up sound in a fast loop) and shuts off immediately. As bad as it was, it was more stable under 6.5. I'm afraid to try flashing now because it won't stay on long enough to load the rom.

Sounds like you need a new battery.

stylez said:
Sounds like you need a new battery.
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That's what I thought too... but since we have 3 of these phones it was easy to switch batteries, and it doesn't appear to be the case because this phone has problems regardless of which battery is in it, the others are fine with either battery. Now that you mention it though... this phone was fine for a few hours after switching batteries, so maybe there's something wrong with the charging port?

winda said:
That's what I thought too... but since we have 3 of these phones it was easy to switch batteries, and it doesn't appear to be the case because this phone has problems regardless of which battery is in it, the others are fine with either battery. Now that you mention it though... this phone was fine for a few hours after switching batteries, so maybe there's something wrong with the charging port?
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Full charge a battery in other phone then place in problem phone now run it see if you get a problem and if @ a certain percentage, now when @ 10% battery turn phone off place the phone on charge "full charge".. Test phone.

[Q] Sim card randomly removed?

Now this has happened a few times and it's kinda annoying. I could be talking on the phone, browsing the net, buying an app or whatever, and all of a sudden a message pops up saying that my sim card was removed and the phone needs to be rebooted and i lose signal, then when i reboot it still acts as if i have no sim card inside(eventhough i never touched it)
I'm rooted(CDMA) and running codename's latest, i never understood why it does that, i don't think it's the rom(but i may be wrong)

Mine just started doing this today. Same exact error.
It can't be the rom because I'm on a completely different rom. I'm running on AOKP build 24.
It happened to me at work... I restarted the phone 3 times and nothing worked. It even displayed the wrong time. By like 4 hours off.
Finally when I got off work I restarted and it was working. Then I got home, started doing a little bit of web surfing and BAM..... lost signal, got the message sim card removed you must restart.
I did a little research and it appears that it could be the sim card going bad. Or somehow got loose. I took my sim card out. Pushed it in and out a few times. Put it back in, and so far so good (knock on wood). Its only been a few hours though. So time will tell.
If you rule out that its a bad card. Return your phone to stock before you take it to the store. Someone over at rootzwiki told me that they were checking to see if phones were rooted, even for a sim replacement.

hxdrummerxc said:
Mine just started doing this today. Same exact error.
It can't be the rom because I'm on a completely different rom. I'm running on AOKP build 24.
It happened to me at work... I restarted the phone 3 times and nothing worked. It even displayed the wrong time. By like 4 hours off.
Finally when I got off work I restarted and it was working. Then I got home, started doing a little bit of web surfing and BAM..... lost signal, got the message sim card removed you must restart.
I did a little research and it appears that it could be the sim card going bad. Or somehow got loose. I took my sim card out. Pushed it in and out a few times. Put it back in, and so far so good (knock on wood). Its only been a few hours though. So time will tell.
If you rule out that its a bad card. Return your phone to stock before you take it to the store. Someone over at rootzwiki told me that they were checking to see if phones were rooted, even for a sim replacement.
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I wonder if this may be Network related? Perhaps the network is messed up since its happening to more than one of you.

yiannisthegreek said:
I wonder if this may be Network related? Perhaps the network is messed up since its happening to more than one of you.
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I don't think so.... because when I looked it up, people were having this issue in December and January.
Also.... its been 24 hours since I pulled my sim card out and back in. And its still working fine now. Maybe I'm crazy, but it even feels like my signal strength is better now. But I don't want to jynx myself.

don't have a nexus. have sgs2 and this has been happening to me for the last month on and off although upon reboot, phone works fine. finally had the time to make it to the att store to get a new sim card. hoping there'll be no troubles though. any success here? :X

just started getting this error as well a few days ago. It's been pretty random as to when it happens, I have rebooted the phone numerous times and even re-seated the phone but still receiving the error from time to time.
I've probably seen the error 8 or 9 times in the past 3 days.
Wondering if anyone had their SIM replaced and if that solved the issue.
unlocked, rooted, stock Android.

I have an unlocked Tmobile S3 using it on WIND mobile in Canada with Frosty ROM and get this randomly, when I installed other ROM i didn't have this, but I love the ROM its great so I don't want to change

same problem!!
i've been gettin the same problem ever since i rooted too.. i dont think it specific to any ROM cz i first tried cyanogen but i had it.. then i tried omega, had it.. and now im runnin on Resurrection remix but i still get the msg from time to time whenever my data is on or sometimes even when im on wifi.. so i completely unrooted the phone and i didnt have the problem anymore.. but my need to try out different ROMs over took me again so i decided to root it and im having the same problem again!! thank god im not alone on this! lol

Mine did that a month out so ago about 3 times. I finally shut the phone down, removed the Sim card and reinstalled it. Haven't had a problem since.

sporkette said:
Mine did that a month out so ago about 3 times. I finally shut the phone down, removed the Sim card and reinstalled it. Haven't had a problem since.
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i get this error when data is enabled but phone works perfect when data is disabled.
im running 4.1.2
are you all runing jelllybean?

Emergency calls only - no sim card

After a month's use, my HTC didn't read the sim. I noticed that when the phone was face up it would detect the sim. When face down, the sim wasn't being detected. So i did the tape trick and it worked. Then i installed the GPE RUU and DIDN'T BACKUP. Then it suddenly wouldn't detect the sim. Sometimes it would and it would last for an hour or two. Then it wouldn't. I have the middle east version HTC__J15 but changed the CID to 11111111. I tried flashing radios to no avail. I don't think it's a hardware issue because it works for a while then the moment i unlock the screen it suddenly disconnects. What seems to be the problem? Please help.
Also, does anyone know what radio is should use for HTC__J15? Can't seem to find it anywhere.

tbc34 said:
After a month's use, my HTC didn't read the sim. I noticed that when the phone was face up it would detect the sim. When face down, the sim wasn't being detected. So i did the tape trick and it worked. Then i installed the GPE RUU and DIDN'T BACKUP. Then it suddenly wouldn't detect the sim. Sometimes it would and it would last for an hour or two. Then it wouldn't. I have the middle east version HTC__J15 but changed the CID to 11111111. I tried flashing radios to no avail. I don't think it's a hardware issue because it works for a while then the moment i unlock the screen it suddenly disconnects. What seems to be the problem? Please help.
Also, does anyone know what radio is should use for HTC__J15? Can't seem to find it anywhere.
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Click to collapse
Had a similar problem 2 hours ago! I trimmed the edges of the nano-sim. No problem since then

After i go into recovery and wipe cache/dalvik and reboot, i get phone service but it goes off after ten minutes. Tried safe mode, same thing. Deleted all apps, same thing. Uninstalled updates, same thing. Don't think it's a hardware issue. HELP!

mashk said:
Had a similar problem 2 hours ago! I trimmed the edges of the nano-sim. No problem since then
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I'm having a similar issue as the op. when you say trimmed down how far did you go? Did you file it or cut it. All sides or just one?

pokedroid said:
I'm having a similar issue as the op. when you say trimmed down how far did you go? Did you file it or cut it. All sides or just one?
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All sides yes. HTC also sent me a new tray. Have u flashed a custom ROM?
Sent from my HTC One_M8 using XDA Premium 4 mobile app

mashk said:
All sides yes. HTC also sent me a new tray. Have u flashed a custom ROM?
Sent from my HTC One_M8 using XDA Premium 4 mobile app
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Click to collapse
I guess i'll have to try cutting it down a bit. Sadly i don't think a new tray would work for me. I work at an AT&T store and tried one from our demo phone and another from a coworker's phone. My tray and sim work in their phones but neither of theirs will work in mine, so I think it's an internal problem. Yes I have flashed a custom ROM I had been on a GPe rom for several weeks when it started happening. Since then I have flashed an AT&T RUU to put it back to stock and it's still not registering. I know how to remove the "tampered" notice and lock the bootloader, but I'm worried that HTC will not repair my phone because it's S-OFF. I don't know what to do at this point.

pokedroid said:
I guess i'll have to try cutting it down a bit. Sadly i don't think a new tray would work for me. I work at an AT&T store and tried one from our demo phone and another from a coworker's phone. My tray and sim work in their phones but neither of theirs will work in mine, so I think it's an internal problem. Yes I have flashed a custom ROM I had been on a GPe rom for several weeks when it started happening. Since then I have flashed an AT&T RUU to put it back to stock and it's still not registering. I know how to remove the "tampered" notice and lock the bootloader, but I'm worried that HTC will not repair my phone because it's S-OFF. I don't know what to do at this point.
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I think there's a way to return to S-ON. I think it's more of a ROM issue I guess. Try flash a different ROM like ViperOne. Should work.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

I'll give it a shot but I'm not hopeful that a new ROM will help. I was on a custom gpe ROM when it started and now I'm on stock and it's still doing it. I really hope it works though I would love to get my m8 back. Now that I think about it the gpe ROM I was on was heavily modified. Who knows maybe I'll get lucky. Thanks for your help BTW.

pokedroid said:
I'll give it a shot but I'm not hopeful that a new ROM will help. I was on a custom gpe ROM when it started and now I'm on stock and it's still doing it. I really hope it works though I would love to get my m8 back. Now that I think about it the gpe ROM I was on was heavily modified. Who knows maybe I'll get lucky. Thanks for your help BTW.
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Hey @pokedroid, did you had any luck with this?
I am running into the same issue as you folks. I have a developer edition from HTC.com website which I was using with an existing T-Mobile microsim that I myself trimmed into a nano-sim. It worked really well since April 1st week until last 3-4 days, where the phone would lose network and even when it gets on the network, it does not actually do any data access. Sometimes the 3G/LTE icon shows up, but no real data transfer happens.
I visited T-Mobile store, where they gave me a new nano-sim. They also did a "network-refresh", whatever that means and I even did a factory reset at home later, however the problem persists. I was finally convinced it was a phone issue, especially since the network works fine on my Nexus 4 (with a sim adapter). I was pretty much on the verge of getting it replaced by HTC (hope it is not too painful) thinking it has something to do with the RADIO chip hardware. I I have only used a custom recovery and rooted the phone, and have been running stock rom after briefly trying an HTC-base ROM for a few days.
However this thread gives me hope that there could be something else going on maybe with the sim tray and surrounding parts. Maybe the metal unibody design does not lend itself well to these kind of defects.
I did accidentally drop my phone a few times in last few days, and whilte it has a TPU case it probably only does scratch protection and not much shock protection and might have caused issues with the sim tray. I am hoping I get it resolved on my own, doing a replacement will be a pain. Let me know how it worked out for you.
EDIT: So I tried adding a few layers of transparent tape just on the SIM card, to increase it thickness. No change. Then I tried trimming the edge of the sim slightly. This made the SIM move around even when trying to get the tray back in, but I was able to get it in right after holding it a bit while sliding it in. However still do not see any change, though the data did turn on briefly while I held the phone upside down, but it stopped after 3-4 MB. Is there a way of knowing if the SIM is being read correctly or something else is going on. I tried installing a SIM Info App which does seem to be able to read SIM info even when network is not connecting, is this a definitive sign that RADIO chip has issues? I have not changed anything in terms of ROM or radio in past several months, and just did a factory reset, so that rules out a software issue (I think).

Does anyone know personally of someone who's had their phone returned by HTC because of it being rooted or s-off? I sent my M8 for repair, the camera lens was scratched up. They replaced them and sent it back. (Free) but here is the kicker, I had s-off, and running ViperOne rom with the custom boot-up and log-off screens. It came back, lens fixed, been returned to stock. This is not the first time I have done this. Samsung did the same too. Here is what I think they do:
1) Unpack phone
2) plug phone into a terminal that returns it to the latest stock rom
3) Look for and fix problem
4) Reset the phone
5) Pack it up and send it back.
That has been my experience 100% of all the phones I had exchanged, whether with Verizon, AT&T or US Cellular.

Oditius said:
Does anyone know personally of someone who's had their phone returned by HTC because of it being rooted or s-off? I sent my M8 for repair, the camera lens was scratched up. They replaced them and sent it back. (Free) but here is the kicker, I had s-off, and running ViperOne rom with the custom boot-up and log-off screens. It came back, lens fixed, been returned to stock. This is not the first time I have done this. Samsung did the same too. Here is what I think they do:
1) Unpack phone
2) plug phone into a terminal that returns it to the latest stock rom
3) Look for and fix problem
4) Reset the phone
5) Pack it up and send it back.
That has been my experience 100% of all the phones I had exchanged, whether with Verizon, AT&T or US Cellular.
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Click to collapse
Interesting experience there, and sounds like you have done it multiple times and with them returning the device without any hitch.
I personally never had to go for replacement so far, however this definitely makes me feel better about going about it. My HTC M8 is still showing the same problems as earlier and I have not quite been able to decide whether it is a bad sim tray or something else. I also wonder if my issue is different from @pokedroid and @tbc34 in that my SIM card is read for short periods, and LTE/3G icon shows up as well, but the data does not work and it goes back into out of network mode.
For replacement I will probably still see if going back to stock recovery/red warning text fix etc is easy enough, just in case I catch an HTC technician in a bad mood. EDIT In fact this other thread makes me want to be double sure I get phone back in full stock mode: http://forum.xda-developers.com/showthread.php?t=2723409 . Fort. I have a dev edition, so HTC can't really say that I unlocked bootloader (though I wonder if such data travels back to them from the device via internet)

I have that problem since two days. Sometimes the phone is okay and sometimes he says only emergency. I wiped all, flashed a new rom, I've also opened the device but it seems all okay. Do you have any idea?

CapraNorvegese said:
I have that problem since two days. Sometimes the phone is okay and sometimes he says only emergency. I wiped all, flashed a new rom, I've also opened the device but it seems all okay. Do you have any idea?
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Click to collapse
Try some Scotch tape on the SIM, on the side that doesn't have the gold contacts. Sometimes this will "thicken" the SIM so it makes better contact inside the tray (which is sometimes the reason phone will intermittently say 'no SIM').
Be careful you don't gum up the SIM tray with loose tape.
You can also try to get a new SIM for your carrier, and see if that works better (varying tolerances in the SIMs physical dimensions may help).

Phones radio or something is acting up.

Not sure what happened, but I've been using my S4 good. Out of no where it started acting up, freezing on me, etc. It's on latest firmware, 4.4.4 OK3. When i look under about phone, and check "service state", it would randomly say, "in service" then "radio off", "out of service" then go back to "in service". Also had/have a problem (haven't tested it for a good while yet, had old sim in and it gave problems, now using new sim, still did it one time atm.) with the phone saying "sim removed" or etc, like it cant find a sim? (weird part is my old sim works fine with other phones, my phone kept losing sim, sim no found, etc)
Weird, never had it happen, bars would go from 2 to 4-5, then drop to 1-3, or to 0 and go out of service. I did factory reset, but ofc it only went back to OK3 stock, tried to use previous modem that worked for me before problems started happening like NK2 modem, nope...still problems, so I flashed OK3 back for now. If i have good bars, and turn on mobile data, it would go out of service completely until i shut it off, cant use my mobile data. Anyone know what's the problem? Phone right now running with minimal apps installed, if you need more information, just ask. Thank you! in advance.

Used the phone for a day with new sim, still has problems freezing up on calls(screen), says sim removed...device needs to restart, etc. Would Flashing older Firmware to like Nk2 solve this? I havent had problems on older ones, but when i got OTA, used for couple months and having problems now. Service keeps being circle with line thru it, when u try to make a call it would say "cannot connect to network or registered on network", dbm was -113(usually -100-115), and asu was 0, when service cuts off, keeps finding service then loses it all day, finds it, then make few calls, and loses it, keeps searching for it. Would flashing OK3 firmware solve it? Maybe OTA went wrong? Idk...or maybe go back to a stable rom 4.4.2?

Is it possible the sim reader is damaged?

audit13 said:
Is it possible the sim reader is damaged?
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Not sure how it could have been damaged, it was always in a case.(guess i saw a video where a guy said they sometimes go bad on gs4's) Phone already been used for pretty good 1.5-2yrs. Phone freezing up, etc would result in a bad sim reader? Anyway to test that it really is a bad sim reader?(if it did go bad)

Was the sim card used with a sim adapter?
I suggested the possibility of a damaged SIM card reader because of the "sim removed" error message.

audit13 said:
Was the sim card used with a sim adapter?
I suggested the possibility of a damaged SIM card reader because of the "sim removed" error message.
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Click to collapse
The previous sim that was origionally used in GS4, was used with sim adapter in an older phone that needed a standard sim, so this micro sim was was in adapter in an older phone, worked perfectly fine on Gs4(no sim adapter, just the micro sim), i even got a new sim card off ebay and changed over my number to new sim, and still phone is freezing up on calls, using it normally now, the signal would find the Carrier, then would lose it so many times, then tries to find it, then loses thru out the day, it's annoying as hell. Never had the problem of losing signal, having out of service sign(circle with line thru it), had good service everywhere till now. I even did a factory reset, started up phone up new, still problems with "sim removed" device needs to restart time to time, losing and catching signal a lot, or no service. Anyway to test/find out it really is a bad sim card reader? Just don't want to do 100's of things and it's not it. Phone it used for work ofc. Let me know if i should try anything, before buying a sim card reader, if it really is the problem.

How is the sd card reader? Both readers come as a single unit and they are not too expensive on eBay.

audit13 said:
How is the sd card reader? Both readers come as a single unit and they are not too expensive on eBay.
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Not really sure, how the sd card reader is...Haven't really used it, as i didnt really need it. I could try and get back to you on that. Yeah, i checked on ebay, they r like 5$ or so, but still the hassle of replacing it, and it's not it. I'll get back to you how sd card works...etc.
Edit: Just tested my brothers Sd card with tons of pictures and videos on it. Put it in my phone, can easily look thru pictures and videos, unmounted couple times, put it in, works fine without any problems. Any ideas?
Also read online about sim error problem, and lots of people are saying it could be a hardware problem, and need to apply pressure to the ribbon of the sd/sim card.
Phone is working fine without the simcard inside, good bars, sometimes it goes low/no bars, or out of service, but still less then it is with a sim inside for some reason.

Den Den said:
Not sure what happened, but I've been using my S4 good. Out of no where it started acting up, freezing on me, etc. It's on latest firmware, 4.4.4 OK3. When i look under about phone, and check "service state", it would randomly say, "in service" then "radio off", "out of service" then go back to "in service". Also had/have a problem (haven't tested it for a good while yet, had old sim in and it gave problems, now using new sim, still did it one time atm.) with the phone saying "sim removed" or etc, like it cant find a sim? (weird part is my old sim works fine with other phones, my phone kept losing sim, sim no found, etc)
Weird, never had it happen, bars would go from 2 to 4-5, then drop to 1-3, or to 0 and go out of service. I did factory reset, but ofc it only went back to OK3 stock, tried to use previous modem that worked for me before problems started happening like NK2 modem, nope...still problems, so I flashed OK3 back for now. If i have good bars, and turn on mobile data, it would go out of service completely until i shut it off, cant use my mobile data. Anyone know what's the problem? Phone right now running with minimal apps installed, if you need more information, just ask. Thank you! in advance.
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This is a known issue with the S4. Mine did the exact same thing. I have researched this and tried every fix under the sun, and nothing worked. I even bought a new sim card tray and replaced it. Nothing worked, and I babied this phone. My wife and daughter also have the S4 the same age and theirs are fine. I gave up and bought a new phone. Wish I could give you better news.

vasolini said:
This is a known issue with the S4. Mine did the exact same thing. I have researched this and tried every fix under the sun, and nothing worked. I even bought a new sim card tray and replaced it. Nothing worked, and I babied this phone. My wife and daughter also have the S4 the same age and theirs are fine. I gave up and bought a new phone. Wish I could give you better news.
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So you pretty much saying it's a hardware issue and nothing can be done to solve it? Thought maybe flashing older firmware or something might solve it, perhaps a hiccup in OTA update or the latest patch that could've caused it. Kinda sad to just throw it away when it was working soo good.... =/

OK, one question? How is the inside of your phone that damaged and beat up? Jeez man, take better care of that thing.
Sent from my SGH-M919 using XDA Free mobile app

Den Den said:
So you pretty much saying it's a hardware issue and nothing can be done to solve it? Thought maybe flashing older firmware or something might solve it, perhaps a hiccup in OTA update or the latest patch that could've caused it. Kinda sad to just throw it away when it was working soo good.... =/
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Click to collapse
It is sad. And if you google the problem, you'll see a lot of S4 owners were mad that Samsung doesn't acknowledge the issue. I think somewhere on this site you'll find this subject covered in full. Some of the fixes work for a short time, but ultimately it is a hardware problem. Some think it's the NFC chip that is right under the tray (supposedly) that heats things up and causes the malfunction. Whatever it is, it has turned my S4 into a infrared remote for my TV, a Chrome caster for Netflix and Hulu, and an iPod Touch!

vasolini said:
It is sad. And if you google the problem, you'll see a lot of S4 owners were mad that Samsung doesn't acknowledge the issue. I think somewhere on this site you'll find this subject covered in full. Some of the fixes work for a short time, but ultimately it is a hardware problem. Some think it's the NFC chip that is right under the tray (supposedly) that heats things up and causes the malfunction. Whatever it is, it has turned my S4 into a infrared remote for my TV, a Chrome caster for Netflix and Hulu, and an iPod Touch!
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Click to collapse
Rofl....At least you're still putting it to a good use It was a pretty good phone too rofl. Have you tried everything from putting a piece of foam(ear plug) over the ribbon for the sd/sim that lots of people talked about, etc? I guess if there is no real solution, I'll get get a new phone, prolly an iphone or w.e., had an eye on Gs6 Active cuz of long battery, durable, dust/water proof, etc, Gs6 is nice too but I'm in construction, and it's always in my pocket, need something that can last, and you know, keep a good charge while using everyday use like gps, listening to music, etc. What did you go for after your Gs4 stopped on you?

Den Den said:
Have you tried everything from putting a piece of foam(ear plug) over the ribbon for the sd/sim that lots of people talked about, etc? What did you go for after your Gs4 stopped on you?
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Yes sir, tried them all!
I like a large screen, The S4 was the first phone I owned that had a screen larger than 4". So, I had to go even larger now. I picked up an Nexus 6 when they dropped the price after the 6P came out. My wife and daughter still have their S4's, so I keep up with the latest here for them.

damn shame... i just dropped to 4.4.4 with the NH7 kernal and modem set... still nada. I had a bit of luck with the separating the right side of the phone trick for a bit, but even that doesnt work anymore... I have a note 3 that im using for a daily driver... but i really find its too large for my taste. The s4 was pretty close to the perfect size for me. Prob gonna scoop up an S6 in a couple weeks. Ill keep it around as desk clock prob and a back up for when i drop and smash the s6 to pieces. I swear the wifi and bt were working till i installed the JDCTeam MM build back in december i think. Which made me think it was software related. Ever since then its been doneski... But tbh at this point, everythings pointing to hw issues...

this $#!T is weird...
I admit defeat...

Well, looks like i kept getting the stupid sim card removed often even with w.e solutions i tried to use. Then out of nowhere my usb port stopped working altogether(cant charge my battery now lol). I give up, don't want to waste money into usb port, then something else falls apart rofl. My other Gs4 also worked for 2.5yrs or so, and died. R.I.P Galaxy S4's lol. Don't think they were built to last.

LG G3 D850 "SIM Card Removed" Problem After Marshmallow Update.

After downloading marshmallow on my LG G3 D850 everything seemed to be in order for a good week when one day randomly in class my phone gives me a "SIM card removed" notification. I shrugged it off thinking I can fix with a simple restart but the problem priests. I'm positive it can't be a problem with the pins or the SIM reader because at random reboots it would detect my SIM card but either read it as invalid or it ends up working for some time and then the problem comes back up. I tried factory resting it a countless amount of times and I figured out when it does work , I can't download apps or use things like Bluetooth or airplane mode without the problem coming back. This is very annoying and I reached a breaking point, is there a way to fix this? I can't seem find a method to root D850 on marshmallow meaning I can't downgrade. Does this mean I'm screwed?

Same issue
I'm having the same problem, but my phone started showing the "invalid SIM" or "SIM removed" messages while still on Lollipop. I updated to Marshmallow and it persisted, did a factory reset and it's still there, only thing i haven't done is rooting the phone, i've been having this issue for the last 3 weeks, it used to sporadic but today my phone has restarted over 15 times and now it's pretty much a brick.
Only thing that seems to make the phone stable enough to use i to switch off the data network and turn on wifi, i can make calls but as soon as i'm out of wifi range, all i can do is make calls...
I'm pretty new to this but I think this has to be a software issue, i already took my phone in and the repair guy told me, after cleaning the phone and checking the contacts on the SIM card tray that the LG G3 was coming in more and more with the same problem with no repair...
Checking online it seems more and more people are having this problem lately.... coincidence?
Has anybody figured this out????

"Sim Card Removed"
Same issue here on my lg g3, D855

Im also having the same issue have you found the solution

Has anyone found a solution to this?? Its happening to my phone

Same issue D855, but I use the marshmallow version since the first release.
The problem emerged without notice.
What happen?
Notification and message, to screen, "SIM card removed."
The phone automatically reboots.
Snap the signal for a little while, everything works for a little while.
Suddenly loses the signal and does not hook more mobile radio signal and I have to restart.
Sometimes it does 4-5 times a day, other times remains in use 24 hours without giving me any problem.
Already warned assistance, I have to send him assistance in their view, my warranty expires Oct. 6 (no contacts, because they are in plac, cleanest and most sim warheads)
Tested official ROM and also mod (FulmicsROM).
if you look for the "SIM card removed" message there will be other topics also on XDA for G3

I too started having this issue since yesterday. Any solutions?

I have the same problem for about 5 days on my LGG3 D855. My phone is rooted and running fulmics 5.3 ROM for about 5 months. I did a full recovery and I even changed my sim card but the problem is still there. Does anyone knows what's the problem?

Has anyone managed to fix this yet? I have a D852G with Vidéotron. I find it strange that this is happening right when my 2 year contract with them is up. Has downgrading the phone worked for anyone?

It seems to be an ongoing issue related to hardware. Most readings I've done from other forums, reddit, etc all point to the sim card reader beginning to fail. I can't for the life of me tell if that's the issue or if it is really software related.
I've opened up by device and checked the soldering connection points, everything seems fine (to my untrained eye). Putting a small cardboard/paper cut out in the sim card slot seemed to help, but otherwise, jeez.

same here. but on LS990. Tried KK, LP, MM roms. but no help. I don't know whether it's hardware related.

Same here... Tried MM and now nougat, same problem..
Will switch sims today and see what happens

I'm suffering with this issue also. D855, fulmics 6.7.
Mine seems to go into "No SIM Card -Emergency Calls Only" sometimes just randomly when the phone is on, but almost every time I switch my battery it does it (bloody stupid piece of crap). It's so annoying as I'm eating 5-10% of a freshly charged battery by frantically restarting my phone till the sim card becomes active again. I think it may be hardware related but this issue arose after the MM update for me. I can also report that my SDcard port doesn't work (keeps randomly ejecting) and hasn't worked for nearly a year now. But sim card still worked fine.
It's forcing me to feel the need to spend money on a new phone. Money I don't have right now! Money I don't really want to spend as my phone, other than that, is perfectly fine. Anyone had their sim+sd card reader replaced and still having this issue?
Let's bust this bull**** problem!
Sent from my LG-D855 using Tapatalk

singhsinghy said:
I'm suffering with this issue also. D855, fulmics 6.7.
Mine seems to go into "No SIM Card -Emergency Calls Only" sometimes just randomly when the phone is on, but almost every time I switch my battery it does it (bloody stupid piece of crap). It's so annoying as I'm eating 5-10% of a freshly charged battery by frantically restarting my phone till the sim card becomes active again. I think it may be hardware related but this issue arose after the MM update for me. I can also report that my SDcard port doesn't work (keeps randomly ejecting) and hasn't worked for nearly a year now. But sim card still worked fine.
It's forcing me to feel the need to spend money on a new phone. Money I don't have right now! Money I don't really want to spend as my phone, other than that, is perfectly fine. Anyone had their sim+sd card reader replaced and still having this issue?
Let's bust this bull**** problem!
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Click to collapse
I gave my phone to a repair center and checked the sim tray. It's all good. They suspect the signal ic must have the issue. Furthermore they said even though i replaced it, chances of getting a roasted ic is still high. I don't know what to do.

cpu problem guys

coderer said:
cpu problem guys
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You sure? Maybe you meant the G4? G4 has cpu problems

I've been having the exact same issue guys ??... and again phone surface temperature rises as phone keeps on rebooting to detect sim card... Anyone with a clue or solution to this yet???

My 2.5yr old G3 (D855) always on Kitkat 4.4.2, also suddenly had this problem, at first I thought my 18yr old sim card finally bite the dust, but then when I changed to a brand new sim, it happened again. Then I factory reset the phone, worked for a few days, then it happened once more, so pissed. Maybe it's just me but it seems like it's an international trigger or something to make all G3 users it's time to change a new phone. Going to buy alcohol later to try clean the contact points to see whether it's a hardware problem.

so guys, i totally unscrewed this G3, opened the metal acess doors to both the cpu and Nand Flash memory and wiped with methylated spirit... since then, my phone has not said anything about an invalid card

mee_ducci said:
so guys, i totally unscrewed this G3, opened the metal acess doors to both the cpu and Nand Flash memory and wiped with methylated spirit... since then, my phone has not said anything about an invalid card
Click to expand...
Click to collapse
Gonna give this a try, its been happening to me for weeks!