Hi,
I have a problem with my phone. After installing Darky's ROM i received a signal problem. Now I hoped that CyanogenMOD would solve my problem. It didn't
So I am in the dark now, just wondering how I can fix my signal problem.
So this is what I see:
- Most of the time 1-2 stripes @ signal strength
- Every few seconds my signal strength goes from 0 tot 1-2 stripes (inside)
- When coming outside or I am inside small houses, I can receive a mobile network
- 95% of the time I cannot receive any connection to 3G
- 90% of the time it's saying: "Out of service, emergency Calls only"
- Strange thing is, Wireless doesn't seem to have any problems connecting to modems/routers
- My radio works perfectly
Can anyone help me with this issue? Is it solvable?
Information about my phone:
Model: SGS2
Modelnumber: GT-I9100
Android Version: 2.3.7
Smalbandversion: I9100XXKI3
Kernel-Version: 2.6.35.7-g1e46077 ([email protected] #1)
CPU-info: ARMv7 Processor rev 1 (v7l)
Mod-Version: CyanogenMOD-7.1.0-GalaxyS2
Build-Number: GWK74
Have you tried flashing a different radio? How old is your SIM card? Some radios work better/worse with some ROMs. As long as your SD card is relatively new, I'd start with flashing a different radio and then reassess.
Sent from my HTC Vision using XDA App
Okay, so - first off, let me give a quick intro: I am really sorry if I post this in the wrong forum. I AM a noob.
I've been a long time reader (and a very happy user of the great knowlegde base and ROM development here on XDA!) and this is my first post. I'm not anywhere near to be a Linux/Android wizard but on the other hand I have gotten S-off and root on my Wildfire S, have tried different ROMS, link2sd, modified GPS files with root explorer etc. That's kind of my level.
-------
So - now to my question. Please be patient with me, it's hard for me to explain in simple terms and english is not my first language. I WILL get down to facts and numbers.
I've decided to move to a more powerful device and I have just bought a Galaxy S II, bought unlocked from my provider. So basicly all I should have had to do when I got my GS2 in the mail was to pop out the SIM card from my Wildfire S and pop it in the GS2 and it *SHOULD* have been working. Problem is - it works 'kinda'. Yes - it works in the worst way - from time to time. I am puzzled!
I get very bad reception and most times NO reception - no signal.
The SIM card does not get rejected by the phone as if the phone was locked, and if I go outside I CAN get a signal, and I CAN make calls. Sometimes I have been cut off. Now I'm not talking about me not just getting data or GPS signal - I'm talking about 2G GSM signal for just making calls and texting. But outside downtown I HAVE had the H+ sign for data appear and I HAVE downloaded from market with the troubled SIM card.
So one would think that the antenna/modem(?) in the SG2 does not work properly. Well - I got me a pre-paid SIM card from the best covered provider in Denmark. I pop the SIM card in - I get a fine signal. Data and GPS works well, calling and texting - no problem!
I have tried 2 other SIM cards from my provider from friends phones - CBB using the Telenor network - and results are the same. Very poor signal, sometimes no signal.
So here's the facts from inside my appartment in a larger city well covered from several providers in Denmark:
- SIM card from my provider in Wildfire S gives me a signal between -80 and -90 dBm and 10 - 15 asu. All functions work, GPS, 3G data, calls, MMS, texting.
- The same SIM card in the GS2 give me at best around -100 dBm and 5 - 6 asu but often drops to -111 dBm and 1 asu. I have seen -113 dBm. Useless.
- SIM card from another large network provider gives me 80 - 95 dBm and 8 - 15 asu.
- I have checked if the phone is locked - it is *NOT* SIM locked.
Remember - this is all in the same place in the same chair in front of the same table. If my provider had a poor signal Wildfire S should be affected as well.
Can my SIM card from my provider somehow be incompatible with the SG2? I have of course called my provider and explained all of this. They had NO clue why it happened but would mail me a new SIM card before doing repairs.
After a factory reset Wildfire S will pop up and ask me what provider I am using after detecting SIM card (select SIM service prompt). SG2 will do the same thing on the pre-paid SIM card - not on the SIM card from my provider. Does this mean anything to any of you?
Is there a way to determine the type of the SIM card in the phone? I would like to know if the two SIM cards are of different types using different technologies - whatever - so I could determine if the SG2 was not compatible with my providers SIM card.
Model: GT-I9100
Android: 2.3.5
Baseband: I9100XXKI4
Kernel: 2.6.35.7-I9100XWKI8-CL616395 [email protected] #2
Build: GINGERBREAD.XWKI8
Country: Denmark
Provider: CBB - using the net of Telenor
If you are still with me this far - thank you very much!
I had a somewhat similar problem that I solved just this morning....
Here in Costa Rica there are now 3 carriers, ICE which is state owned and two private carriers, Movistar and Claro.
I bought my S2 unlocked from a fella that bought it from Claro. The chip I was using was an old GSM chip that I was using in my previous phone. I had data connectivity but it was slow and calls dropped constantly with my chip. I have another phone with a brand new chip and when I would use it all was good. The old chip also had an R on the signal for roaming most of the time, and it always thought it was roaming when I had market enabler programmed to fake at&t so I could get to certain apps.
But this morning I went to my carrier and got a new chip and all is good.
Bottom line, go to your carrier and ask for a new chip. There may be something in the programming not optiized for the phone you have or the current network
Actually, cdzo72 could be right.
Check how old are SIM cards you were using.
Prepaid one should be no older than 1 year, meaning new tech included.
Try to find someone who recently got new contract with same provider U are using (CBB) or at least new/replaced SIM from them.
Few years ago my provider forced me to change SIM card on renewing contract since SIM "is no more fully compatible with new technology in modern mobile phones", whatever that means.
Thank you for your time.
I have a new SIM card waiting for me in the snail mail tomorrow, and I hope that it will work.
My current SIM card is 3 years old, and when I got it, it was on the same occasion as Bodisson - I got a new Nokia, and my old SIM card was not compatible with the new phone.
If this is the case however, I cannot help to think about why my Wildfire S works without any problems at all with the current SIM card. One should think that the two phones use the same technologies.
Oh well - if it doesn't work with a new SIM card the GS2 is in for repairs on monday.
The worst thing is that I have had the phone for 10 days and I feel as I did when I was 8 years old and didn't get a Commodore 64 for christmas! I want to play with my new toy!
I have a Verizon branded Samsung galaxy s4 that I am currently using on T Mobile. I put my tmobile sim in it and it works just fine after I changed the APN settings to the T mobile settings so I would get the data, MMS and picture messaging, et cetera et cetera. However I recently noticed that Verizon just released a major firmware update for our phones that will update it from the most current version that we all have: Android version 4.2.2 with firmware/baseband:I545VRUAM(E)7 TO Android 4.3= with firmware/baseband :I545VRUAM(J)7. anyways, book this new firmware... Allegedly, once it is applied not only does it update the android version,..but it is supposed to unlock all of the of the available AWS - LTE bands and data technologies that a lot of other carriers use for their high speed data. So effectively once the update date is applied... instead of getting 3G or H+ (HSPAP), we should effectively be getting 4G and or LTE in a lot of areas using T-mobile on that phone. I have not yet downloaded and applied the update to my phone because I'm a bit hesitant. My phone is working fine now and the maximum data speed I get is the H plus, however I would love to be able to get the other bands on my phone that this update offers in some places. I'm just a bit concerned that I wonder if when the new firmware update is put on the phone will it possibly put a restriction or sim card lock on the phone that was never there before? Effectively not allowing me to use the tmobile sim card in the Verizon Galaxy phone any longer? I just wanted to reach out to other people in the same situation to see what firmware version u guys are using thats allowing use of a tmobile sim card, and anyone who has successfully done the new firmware "MJ7" 4.3 ... update and are still able to use the tmobile (or other carriers sim cards) in the phone with no new negative issues or restrictions or locks. Thanks so much I'd appreciate any feedback. -Rob
Sent from my SCH-I545 using xda app-developers app
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
Hi all,
pleasure to be here, I bought a used LG G5 because I needed a phone to connect via Tello (Sprint), long story short I was able to connect the phone with Tello but my issue is that if the phone is on LTE I cant make any calls/texts, I get an error message saying: Mobile network is unavailable but internet on LTE works fine. if I switch from LTE to CDMA (3G) I'm able to make phone calls/Texts but I'm not able to user the internet. Tello it's been working with me on this issue since December, I've been researching on this issue all over the internet with no luck. today tello called me and told me that the issue is on the phone and that I should take it to a repair shop, I'm not sure what the repair shop will do to fix this so that's why I'm here looking for your PRO help. any help is appreciated.
Model: LG G5 LGLS992
Android version: 7.0
Android Security Patch Level: February 1, 2018
Kernel version: 3.18.31
I have replaced the sim card
I have reset network settings
I have factory reset
I have reset the phone via root
I have update PRL
I have update Profile
I have update firmware
UICC unlock : Failed to update
Mobile data is on
Roaming is off
4G settings: Network operator: n.mi.ispsn
Network: LTE/CDMA
no VoLTE option on LG G5.
no Advanced Calling option on LG G5
Thank you so much