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Hi,
I'm in the UK and I work in the gadget repair industry. I have been asked to sort out an LG Optimus Big LU6800 that's having problems with the Wifi and Bluetooth. It's locked to a South Korean phone network called LG U+ (No Sim card)
After a couple of hours of research (which has been difficult given that there's not much English documentation or discussion on this phone) I think I've worked out that LG U+ have the phone locked down so that the WiFi and Bluetooth functionalities don't work unless you purchase a data plan with the network. I've also read that they blacklist the phone if the contract plan is terminated, also rendering Wifi and Bluetooth unusable. Is this even possible, or is this what they might have done?
Can anyone help me on this? Or can anyone fluent in Korean do some Googling on my behalf to find this out. I know it's not a hardware problem as I have already replaced the antenna to no avail. (this is my first experience with CDMA phones, I've never seen one before). I can't even boot the phone into developer mode, it seems like they've locked that down too .. meaning I don't actually know how I'm going to go around sorting this phone out.
Hopefully someone can help me, this seems like a good forum.
Thanks.
After much trial and error, I could not reliably get my G2 (5.0.2 ZVI) to Qi-standard wireless charge (with a usb-port receiver). I finally came to the conclusion after numerous searches, that the problem is with Lollipop, not hardware.
I have a G3 on the way. The latest Sprint OTA update is again to 5.0.2. Am I likely to have the same problem with wireless charging on this newer device?
The rumor is that there will be a 6.0 OTA update issued soon. Will that provide reliable wireless charging?
TIA
Re: Verizon 6.0 OTA update, LG G3, after the update last month, my Bluetooth connections (three different headsets) became useless, with both parties to a call cutting in and out and the BT indicator going on and off repeatedly. After a series of complaints and escalations Verizon sent a replacement with Lollipop installed. Problem solved until VZW pushed the update to the new unit. Now I have the same trouble with BT. I am cell tech savvy but at the end of my patience. Has anyone experienced this issue and is there a fix? Many thanks.
I have not had the issue but I only connect to my car's built in bluetooth for call audio.
i had a little issue pairing to my plantronics voyager legend but it was getting the headset into pairing mode. once paired, flawless.... just make sure you turn off those stupid smart sensors on the headset. they cause tons of disconnect issues.
i also have it paired to a tone pro (HBS-730) and a JBL Clip, and pioneer headunit in my van. no issues.
Brian
Similar problem here. Since the Marshmallow update, I cannot pair to my Basis Peak fitness monitor, pair intermittently to my Aukey wireless headphones, and am getting erratic operation on my Wahoo Kickr Snap smart bike trainer.
No issues with my car (Hyundai) or Logitech boombox speaker with a clean install. Try deleting all of the Bluetooth devices from your phone, then delete the phone profile from the device if possible, power cycle both and pair again.
Third G3 VS985 in a row broken by MM update!
(I am the OP this thread): Third replacement unit has BT issues following the 46A update. VZW "2nd tier tech support" claims no one else has reported this issue, which is, of course, bull****.
I have an appointment in early March with an attorney who does consumer class action work. No guarantees, but she is interested in hearing more. Anyone else experiencing similar problems should message me. Thanks.
wjanowski said:
Similar problem here. Since the Marshmallow update, I cannot pair to my Basis Peak fitness monitor, pair intermittently to my Aukey wireless headphones, and am getting erratic operation on my Wahoo Kickr Snap smart bike trainer.
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Click to collapse
Same here (but Motorola Moto G 3rd Edition 2015 with OTA Marshmallow) . I suspect that Basis Peak is just not fully compatible to Android 6.0.1 in general.
BT issue on Marshmallow update
I have found that my G3 will now not pair with devices that use a dedicated app to pair with the phone. All other devices seem to pair normally.
I have 2 devices that use a dedicated app to sync over BT and they will not connect.
I have 2 devices that sync using the basic BT pairing method on Android and they connect no problem.
I wonder if there is an added security setting in Android 6.0 that is blocking these types of connections.
I had the same problem - won't connect to my Basis Peak, but is fine with my Pioneer radio after the update. I opened a helpdesk ticket with Basis, and here is their response:
I hope you are well. We have discovered that there is a connectivity issue with the LG G3 phone.
In mid-February, Verizon upgraded its LG G3 users to the newest Android operating system, Marshmallow (Android 6.0.0). Following this update, Verizon LG G3 customers, now running 6.0.0, became unable to sync or pair with their Basis Peaks.
When Basis became aware of this issue, our Android team began running tests to determine what was causing the incompatibility. Our team discovered that the LG G3 has trouble maintaining a stable bluetooth connection when running 6.0.0. The Peak uses a secure communication link to transmit data to your phone, which requires a more complex connection process. What is happening is that the unstable bluetooth connection of a LG G3 running 6.0.0 tends to drop before the secure communication link can be established, thus the Peak can neither pair nor sync with the phone.
Several other BT devices are having difficulties with the LG G3 handset running 6.0.0. The company, Tile, saw a BT issue with 6.0.0 and they worked with Google to develop a fix which is being rolled out with 6.0.1 While Tile’s issue was not specifically related to the LG G3, we believe that the next Android release may resolve the issue we are experiencing, as we have several customers who are able to sync while on 6.0.1.
(More information about Tile’s 6.0.0 issue can be found here: (I can't post URL's yet...)
We currently are working towards being able to validate that 6.0.1 will resolve the communication issue between the LG G3 and the Peak.
We take this situation very seriously and will update you as soon as we know more. We appreciate your patience.
Verizon pushed update to 47A today, BT issue unchanged
I was hopeful when I saw a new system update to the LG G3, but it doesn't help the Bluetooth issue with 6.0...
My JBL Flip worked fine with 46A but only supports call audio with version 47A.
Why has Verizon Wireless abandoned customers using the LG G3?
Verizon Wireless customers using the LG G3 (VS985) received a mandatory update to "Marshmallow" (6.0) earlier this year. Following the update, four of my five Bluetooth devices no longer worked reliably. Verizon referred me to LG, which in turn suggested that I contact Google.
I discovered (on this forum and Verizon's own) a large number of Verizon customers complaining that they too have had their Bluetooth functionality badly reduced. Some of us have spent additional money on higher priced devices in order to use the phone legally on the road. My hearing aid connects to the phone via BT, so I'm s*** out of luck.
Verizon's troubleshooting steps do not address the problem. There is an apparent solution in 6.0.1, but Verizon declines to make it available on the G3.
Having worked in the wireless industry, I believe nothing is pushed to Verizon customers until and unless it has been vetted and approved by the carrier. My educated guess is that Verizon failed to do proper diligence and wants to get out from under the problem by dropping support for the G3 and suggesting that customers pay to "upgrade" to a newer model.
Within the next few days, I'll be moving my numbers to one of their competitors. Verizon Wireless has failed to support a large group of its customers and deserves to lose them.
bobgowa said:
Within the next few days, I'll be moving my numbers to one of their competitors. Verizon Wireless has failed to support a large group of its customers and deserves to lose them.
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Click to collapse
I understand what you're saying, and the frustration. If I were in the same position, I'd downgrade to 10B, root and put @xdabbeb_vs985_2.0.0 ROM on (based on 35B). All carriers tend to not care anymore once they've delivered what they expected to be their last OTA to a device.
roirraW "edor" ehT said:
I understand what you're saying, and the frustration. If I were in the same position, I'd downgrade to 10B, root and put @xdabbeb_vs985_2.0.0 ROM on (based on 35B). All carriers tend to not care anymore once they've delivered what they expected to be their last OTA to a device.
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Click to collapse
I'd love to. However, while I'm pretty capable with RF technology, this is above my pay grade and I don't know anyone who can do it for me. Any ideas out there?
I've seen others post about this issue. Here's what I've observed, and what I just sent to LG. Be sure to let them know this needs to be fixed!
"I have owned a G5 RS988 (Android 7.0) for 3 weeks, and am disappointed in its cellular reception on Cricket Wireless, which uses the AT&T network.
The RS988 frequently drops from LTE to HSPA connectivity. In my area, using the same SIM card, other phones ALWAYS maintain an LTE connection.
I believe that the problem is the G5 will not use Band 17, even though the specifications list Band 17. Using a monitor app on a Nexus 5X and my G5 while I travel locally (both using Cricket SIM cards), I find that the Nexus selects from Bands 2, 4, 5 and 17, and stays linked via LTE. The G5 selects from Bands 2, 4, and 5 only, and frequently drops to HSPA.
I hope you already know of this problem (it is being discussed on forums frequently) and have plans to update the software to solve it.
Thank you for your attention to this issue. "
Cellular signal -LG G5 RS988 vs Nexus 5X - same time, same place
I'm assuming you've already set up and selected the cricket wireless APN as follows:
Go to Settings, More, Mobile networks, Access point names, and hit + to add the new APN as bellow, then Save it, and select it.
Name: Internet
APN: ndo
MMSC: http://mmsc.aiowireless.net
MMS Proxy: proxy.aiowireless.net
Multimedia Message Port: 80
MCC: 310
MNC: 150
APN type: default,mms,fota,hipri,supl
APN protocol: IPv4
APN roaming protocol: IPv4
Turn APN on/off: ON
If you've already done this, then you can try a "Network reset" with your sim card removed. After the network reset and reboot, enter your WiFi password, turn off the phone, re-insert the SIM, turn on the phone, and verify the correct APN is selected.
Hope it helps!
Sent from my RS988 using XDA-Developers Legacy app
Thanks for your idea, C64. I had clicked the configuration link Cricket sent to me when I first powered up with the SIM installed, and never checked the APN settings.
I did find some differences and will edit them. I'll post my results here.
I just noticed a new post in the AT&T LG G5 Q&A forum in which the writer is having very similar issues. Numerous "me too" comments follow the OP. I assume these folks are using the AT&T model, not the RS988, and they are on AT&T, so that seems to indicate the problem more wide-spread.
I hope the G5 is not so far back in LG's rear-view mirror that they have no interest in solving this!
Commodore 64 said:
I'm assuming you've already set up and selected the cricket wireless APN as follows:
Go to Settings, More, Mobile networks, Access point names, and hit + to add the new APN as bellow, then Save it, and select it.
...
Hope it helps!
Sent from my RS988 using XDA-Developers Legacy app
Click to expand...
Click to collapse
Sent from mTalk
RS988 Problems
I've also noticed this and contacted LG about it. Definitely has to do with the update from Android 6 to Android 7. I actually went so far as to purchase a second RS988 and not allow it to update, and if I run them side by side, the updated version won't see band 17, which is widely used in my area (by ATT). I expect this is what your seeing as well. I also suffer from frequent drops, because of the location of the towers and signal strength. I've contacted LG twice, both times they denied knowledge of the problem, and only offered to send the phone in for repair. Two weeks without the phone is what they said for timing. I just got an OS update, thought it might address this, but it didn't.
Let me know if you find an alternative to sending in for repair.
Thanks for the input. After seeing your results and several others, I have no doubt the problem is built into the Nougat image for the RS988, and possibly for the AT&T G5 version as well.
I didn't contact LG tech support, because I knew their standard response would be, "never heard of this problem, send your phone in for repair". (Of course, not criticizing just LG here, this is standard for all tech support these days.) But sending it in would deprive me of the phone for 2 weeks or more, risk actual damage in the process, cause me to rebuild my apps and phone after they reset it, and accomplish nothing except (maybe) receiving the phone back with Marshmallow on it. Even if all bands show up on Marshmallow, I really don't want to pass up on the Nougat upgrade - there are too many benefits to miss out on.
So I made sure to register a complaint at LG customer service: http://www.lg.com/us/support/chat-and-email-information. Don't know if it will go anywhere, but rep promised it would be forwarded up the chain.
I'm finding that where I live, I'm getting by okay on the mostly LTE, occasionally HSPA signals I'm seeing. But I had one instance of no cellular signal at all (neither phone nor data) while in a medical building in an important part of town. If that was not just a fluke, it is a problem. Still investigating.
This is clearly a software blunder, not a hardware problem. So it can probably be fixed fairly easily during an update. The question is, without a massive number of complaints, does LG care to fix it on a phone is no longer their flagship?
cadteach said:
I've also noticed this and contacted LG about it. Definitely has to do with the update from Android 6 to Android 7. I actually went so far as to purchase a second RS988 and not allow it to update, and if I run them side by side, the updated version won't see band 17, which is widely used in my area (by ATT). I expect this is what your seeing as well. I also suffer from frequent drops, because of the location of the towers and signal strength. I've contacted LG twice, both times they denied knowledge of the problem, and only offered to send the phone in for repair. Two weeks without the phone is what they said for timing. I just got an OS update, thought it might address this, but it didn't.
Let me know if you find an alternative to sending in for repair.
Click to expand...
Click to collapse
Sent from mTalk
barotropic said:
Cellular signal -LG G5 RS988 vs Nexus 5X - same time, same place
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I thought you should get an H820 instead if you stuck with Cricket.
damiloveu said:
I thought you should get an H820 instead if you stuck with Cricket.
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Click to collapse
The RS988 is the unlocked North American model of the G5, and has all the sensors and specs to be fully compatible with the AT&T/Cricket network, as well as with Verizon, and mostly compatible with TMo.
Being unlocked gives it many advantages over the AT&T model. I've suffered being AT&T's hostage with 2 previous carrier-locked, flagship phones - bloatware, locked bootloaders, slow updates, and downright broken updates which weren't fixed for weeks. Guess I'm a slow learner, but I finally vowed "never again!".
The problem being discussed here is apparently a software error introduced with Nougat by LG. The phone has Band 17 capability, which is very important on the AT&T network. It apparently used that band perfectly while running Marshmallow, but does not do so with Nougat.
Sent from mTalk
barotropic said:
The problem being discussed here is apparently a software error introduced with Nougat by LG. The phone has Band 17 capability, which is very important on the AT&T network. It apparently used that band perfectly while running Marshmallow, but does not do so with Nougat.
Click to expand...
Click to collapse
if this is software related, do you think trying a 3rd party rom could resolve the issue?
x000x said:
if this is software related, do you think trying a 3rd party rom could resolve the issue?
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Click to collapse
Possibly. But, as you know, the custom ROM's usually come with issues of their own - camera problems, GPS ,etc.
I've heard many reports that LTE was solid on the AT&T network before Nougat. I think I would find a way to go back to Marshmallow if it were a big enough problem for me. But 80% LTE / 20% HSPA is working okay for me, at least temporarily.
Sent from mTalk using a Dell Venue 8
barotropic said:
Possibly. But, as you know, the custom ROM's usually come with issues of their own - camera problems, GPS ,etc.
Click to expand...
Click to collapse
curious, have you installed the update? maybe this is related the this issues in this comment https://forum.xda-developers.com/lg-g5/how-to/rs988-software-update-21c-t3663768/page2
x000x said:
curious, have you installed the update? maybe this is related the this issues in this comment https://forum.xda-developers.com/lg-g5/how-to/rs988-software-update-21c-t3663768/page2
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Click to collapse
Thanks for pointing out that thread; I hadn't noticed. Yes, I installed 21c when it came out (a week ago?). I haven't noticed a change in behavior, but haven't been looking much either.
Sitting at my desk this morning, I'm still seeing HSPA on Band 5, where the Nexus 5X always has LTE on Band 17. So I doubt it's fixed, but I'll check it carefully while I'm out and about today.
Sent from mTalk
I have been using Lg G8x Thinq for over 1 year now. After the last update v30c-IND (Jan 2022), It started to give me trouble with networks. Networks used to disappear suddenly showing "Radio Off" when calling. Networks used to come and go, but today when the battery reached 15%, It completely went off and there's absolutely no network after that. But Wi-Fi is working. Under mobile networks, it's showing Preferred Network Mode: 22.
I have searched on the internet, some said it's because of a faulty update for G8X. They were trying to remove 3G option altogether and messed up. But there are previous instances of issues similar to this for older LG Phones.
Links are here:
lg stylo 5 mode 22, no network, no radio, wifi only
I'm having trouble with my LG stylo 5 well, two of them, one, on start up, froze on LG logo, so i did the power +vol. down, it turned off, and won't come back on.. won't charge battery, nothing, I took battery out, charged it, tested plug, it's...
forum.xda-developers.com
[FIX] LM-G850UM2X - Canadian G8X broken LTE from 10c Update
Hey guys, I like some of you had suffered from a broken LTE radio from the last security update which was November security patch. This has been driving me crazy the past couple of weeks. LG has acknowledged this as being a known issue and is...
forum.xda-developers.com
I tried all the available solutions and they did not work.
Does anyone have any clue how to fix this?
Thanks in advance.
Hello, if you updated it by QFIL, then pass your backup, modem_a and modem_b, with that it should solve, otherwise as you mention, a faulty update happens to few people. Do the whole procedure again, delete partitions, reinstall LG UP so that you don't get an error.
CoffeeHelps said:
I have been using Lg G8x Thinq for over 1 year now. After the last update v30c-IND (Jan 2022), It started to give me trouble with networks. Networks used to disappear suddenly showing "Radio Off" when calling. Networks used to come and go, but today when the battery reached 15%, It completely went off and there's absolutely no network after that. But Wi-Fi is working. Under mobile networks, it's showing Preferred Network Mode: 22.
I have searched on the internet, some said it's because of a faulty update for G8X. They were trying to remove 3G option altogether and messed up. But there are previous instances of issues similar to this for older LG Phones.
Links are here:
lg stylo 5 mode 22, no network, no radio, wifi only
I'm having trouble with my LG stylo 5 well, two of them, one, on start up, froze on LG logo, so i did the power +vol. down, it turned off, and won't come back on.. won't charge battery, nothing, I took battery out, charged it, tested plug, it's...
forum.xda-developers.com
[FIX] LM-G850UM2X - Canadian G8X broken LTE from 10c Update
Hey guys, I like some of you had suffered from a broken LTE radio from the last security update which was November security patch. This has been driving me crazy the past couple of weeks. LG has acknowledged this as being a known issue and is...
forum.xda-developers.com
I tried all the available solutions and they did not work.
Does anyone have any clue how to fix this?
Thanks in advance.
Click to expand...
Click to collapse
Bro u found any solutions?? I did a downgrade through LG UP , and now my radio is off, no network
Please Help
Same problem. Help please!!!!