Hello all,
I have a Nexus S GT-I9020A which was bought in Canada and want to use in Germany with the German T-Mobile network.
My problem:
After turning the phone on, sound is completely garbled on the first call I make and just silent on subsequent calls. The phone on other side still rings, but nothing gets through in either direction. Rebooting then gets me exactly one more garbled call.
Now, I know that this device doesnt support the T-Mobile/us frequency bands, see this wiki entry. In Germany, however, it appears that T-Mobile uses the UMTS 1900/2100 bands which should work fine with the 9020a. (see this (Wikipedia article). Furthermore I observed that the 3G data connection works fine and switching to "2G only" mode make no difference. The cell reception status bars show a strong signal. Im therefore sceptic that the problem is simply caused by frequency band compatibilty issues.
I am currently on the newest Gingerbread Stock Rom. Also tried Cyanogenmod 9 Alpha, with no difference.
Does anyone have an idea what might cause this issue and how it can possibly be resolved?
Thanks a lot in advance!
Ok, since nobody else seemed to know what I was talking about, it might be helpful to say how I solved the problem: by flashing another radio ROM.
I had been running the default, stock, UCKJ1 radio version which came with Ice Cream Sandwich. After having a look at this Radio-ROM Thread, I installed XXKF1 which is supposed to work for the i9020T hardware as well as for my i9020a.
After flashing this radio, all my problems were gone.
Related
Hi all. I am not new here and most of the time I spent here is reading rather than posting.
Recently, I’ve change mobile carrier from 3HK to NWMobile, I found a weird thing happened in my Nexus S i9020A which is bought in Canada last year.
Before changing the carrier, the phone works flawlessly. After changing the carrier, the first call is perfect but in the subsequent calls, both the recipient and me cannot hear each other. The only way to solve the problem is to restart the phone. It’s not a good idea to restart it after every call. I have searched and read many posts here and found some of the users here also faced the same issue:
http://forum.xda-developers.com/showthread.php?t=1536487&highlight=sound
http://forum.xda-developers.com/showthread.php?t=1356231&highlight=voice
http://forum.xda-developers.com/showthread.php?t=1494930&highlight=voice
However, nobody post a solution so far.
I did a little bit research. The device has quad-band GSM and therefore there shouldn’t be any problems with 2G network in HK. Concerning 3G, all carriers here use UMTS 2100 and this is supported by i9020A. I can access to data under 3G.
If this is radio related, why can I have the first call without any issue? Any ideas or solution will be highly appreciation.
Ps. My phone has never rooted nor unlocked bootloader, running stock 2.3.6
I have same problem with you. I'm try to update to 4.0.4 but still problem.
Sometime my phone working good but now it's still problem.
I've tried CM 7, 10.1 and 10.2 on my Galaxy S 4G (SGH-T959V).
I invariably get this problem where during calls, the audio cuts in and out (approx. every second word in a conversation is lost). Sometimes there's no sound at all, and I've had incoming calls not get through too.
Also, there are problems with 3g. Typically it doesn't work at all (on CM 10.2 it does work sometimes), and the only way to get mobile internet working is to enable the "Use only 2g networks" option in the Android settings.
In CM versions prior to 10.2, I wouldn't even be able to see any of my APNs in the list, or be able to add any, unless I had selected this 2g option, at which point they would magically re-appear. in CM 10.2 I am able to have APNs in the list and 3g works for a while, but then stops working. Needless to say, I've been double-checking my APN settings.
I've also tried a bunch of different modems, but it makes little or no difference. I got the modems from here:
http://forum.xda-developers.com/showthread.php?t=1192436
Any suggestions? I take it that the behaviour I'm experiencing is not normal?
Seems like the radio of your phone is messed up since you've tried many modems and ROMs. Did you get good signals on stock GB?
Yes, confusingly I've got no problems at all on stock roms of Android 2.1.1 and 2.3.6. I've switched between these and CM many times, and the behaviour is completely consistent - calls and 3g are dodgy on CM and fine on the stock roms.
Anything else I can try? I'm in New Zealand, and the phone is imported from Korea I think. It's branded T-Mobile, and is a SGH-T959V.
No ideas? Other people aren't experiencing this same problem though, right?
stevethese said:
No ideas? Other people aren't experiencing this same problem though, right?
Click to expand...
Click to collapse
none here....sorry!
It's a weird problem for sure. I would guess hardware, or a sim card issue. Maybe it's just bad service. Not many people would know if the problem were specific to New Zealand.
I've been happily using an HTC MT4G Slide/Doubleshot I got on Ebay since December (I'm in Canada, using it with Wind Mobile, AWG 3G bands). Last Sunday my phone suddenly started showing "No Signal" for the cellular connection (wifi still works just fine), even though I had full signal bars, and I was unable to complete calls, even the *611 carrier service calls. With the Wifi turned off, I noticed I was still receiving emails, oddly enough, even though I could not register on my network. My SIM was working fine in other phones, and a SIM from another carrier (GSM 2G only) worked just fine. I tried a new SIM from my carrier, no luck, same thing.
I know AWS splits its up/downlinks between the 2 sets of bands it uses (1700MHz for up, 2100MHz for down), so I'm guessing something strange happened to selectively knock out the up bands only. But what? My phone is on EmmanuelU's KitKatDS 1.3, but the only unusual thing I could think of software wise was that I had recently updated Xposed framework to the latest version. I though maybe that did something weird to the baseband firmware, so I restored the original stock Gingerbread ROM via ClockworkMod - no change. I applied the available OTA updates from T-Mo - nothing. Re-flashed KitKatDS & restored by current set-up - nothing.
I'm completely stumped and seriously starting to worry it's some freak hardware thing. Anyone here ever experience something like this?
Thanks for any of your thoughts!
Never seen this myself before, check your apns would be my next step. Maybe try *#*#4636#*#* from the dialer and see if what it says there too. But mostly I'm stumped
Sent from my Nexus 4 using XDA Premium 4 mobile app
i have to reboot in order for the 4g data to work again but it only stays on for about a minute and then it stops working again. everything else on the phone works ( text, voice, wifi etc...) I read somewhere that flashing different radios might fix it but im not sure about that. anyone else experience this and have a work around? i am currently on baseband i535VRLG1
Thanks In advance
i called Verizon and they said it may be the sim card thats damaged. if that were the case wouldnt voice and text fail as well?
frunas80 said:
i have to reboot in order for the 4g data to work again but it only stays on for about a minute and then it stops working again. everything else on the phone works ( text, voice, wifi etc...) I read somewhere that flashing different radios might fix it but im not sure about that. anyone else experience this and have a work around? i am currently on baseband i535VRLG1
Thanks In advance
i called Verizon and they said it may be the sim card thats damaged. if that were the case wouldnt voice and text fail as well?
Click to expand...
Click to collapse
I'm having the same issues recently. I've always gotten a 4G signal at my house (albeit not the strongest one) but lately, my phone will not hold on to the connection. When coming off of wifi, my phone will not acquire a data connection at all most of the time. I can still send/receive texts and calls but there is no 4G or 3G icon, no MMS, and no data. I have to toggle the radios on/off, or change from CDMA/LTE to Global (or GSM) and back, put in airplane mode, or restart.....there is no guarantee any one of those steps will work. Sometimes I have to do it repeatedly until I get my data connection back but it is only temporary.
I'm on the i535VRBMF1 baseband and updated to the ML1 modem to try and resolve but to no avail. I have replaced my sim card (as I initially though that was the issue) but it has not helped either.
The only thing I can think of is that my PRL may have been updated (it is currently 15310) and it's causing issues with the towers in my area.
I just got back from Hawaii and was also in San Diego for a few days and had absolutely no issues. It seems to only be an issue now when I'm at my house which makes me think it is something VZW network related and nothing to do with my phone per say. It's really driving me nuts though.
BTW, I'm in Southern California (Irvine).
I seemed to have fixed the issue by reverting the baseband back to vrlf2. I had to switch from global to 4g/LTE because I vegan to inch roaming charges lol. Verizon credited me and no dropped 4g signal. So I'm happy.
frunas80 said:
I seemed to have fixed the issue by reverting the baseband back to vrlf2. I had to switch from global to 4g/LTE because I vegan to inch roaming charges lol. Verizon credited me and no dropped 4g signal. So I'm happy.
Click to expand...
Click to collapse
What ROM are you running? I'm just curious what the implications are of running an older baseband (from the ICS days) on a newer ROM/Kernel.
I'm running cleanrom8.1 core edition. Slightly buggy but tolerable.
I was finally able to somewhat resolve my issue so I thought I'd post in case anyone else is experiencing something similar.
By using a few different apps and testing techniques, I was finally able to deduce that my issue had to do with EHRDP hand-off with the towers in the immediate vinicity to my house. I'm not sure what VZW did to them lately but it doesn't appear to be a problem in other locations so it seems like the issue is on their end (and not something to do with my phone).
In any case, it seems that when my 4G connection is weak and EHRDP is detected, it is dropping the connection entirely instead of handing if off to 3G (EVDO). The connection is also never transferred back when a 4G signal is detected either until I reset the connection where there is a moderate 4G signal.
Again, this only seems to be an issue when connected to the towers near my house and doesn't occur when traveling abroad.
To fix this, I have disabled EHRDP by doing the following:
1) Open the dialer and type *#97328640#
2) Select "[2] CDMA"
3) Select "[2] Data"
4) Select "[7] eHRPD e/disable"
5) Select "[2] Disable(*)"
6) Reboot the phone
Now my phone switches between EVDO revA. for 3G (using the native protocols) and LTE rather than relying on the broken eHRDP protocols. This workaround will have to suffice until VZW fixes stuff in my area but at least I don't miss MMS messages anymore.
Hope this helps anyone running into similar situations.
Hello,
I bought my Nexus 5 on the 11th of December 2013 and it had been working flawlessly ever since. Since last week, I started noticing the occasional signal drop and I'd be out of cell reception but would usually be back up within no time. However, yesterday, out of the blue I'm travelling on the highway and my signal strength disappears never to come back again. I've tried the following:
- Restore old backup (including EFS)
- Went back to stock from PA
- Upgraded to the latest radio
- Took back cover off to see if anything was wrong but found nothing.
- Tried another SIM card
Nothing worked. My SIM card works fine in another phone. Everything else such as WiFi and Bluetooth works flawlessly but I just don't get any reception.
This is very disappointing and I have my fingers crossed hoping someone can help me with this since I didn't plan on getting a new device for at least another year especially after paying $520 USD for my phone here in my country.
Thank you for looking.
im having a similar problem with the radio after the last few otas. im getting a lot of dropped calls on 3g aws...
im going to try to revert to an old radio as i don't think this is a hardware failing issue..
Sent from my Nexus 7 using Tapatalk
Flash stock firmware with fast boot. If its the same, its a carrier issue....call them to see. Or its hardware failure.
just wanted to post my fix for this issue - very disappointed with Google that i had to do this...my provider is mobilicity canada (3g aws band fyi)
flash krt01b radio from this thread...
http://forum.xda-developers.com/showthread.php?t=2514095
this is *not* a carrier or hardware issue (at least in my case)
seems others are having same issue
https://code.google.com/p/android/i...s Owner Summary Stars&groupby=&sort=&id=70878
Then it is a carrier issue....cause on Telus in Canada....never had an issue with any radio version. ?
telus would have a stronger overall signal but uses AWS band for lte which is different than mobilicitiy 3g aws...
I'm not disagreeing.... Just saying its the carrier....not Google.
See my point?
KJ said:
I'm not disagreeing.... Just saying its the carrier....not Google.
See my point?
Click to expand...
Click to collapse
are you saying mobilicitiy is purposely weakening their cell signal cause they are almost bankrupt ?
i still blame google i had no issues with the radio before they borked it...
nolook said:
are you saying mobilicitiy is purposely weakening their cell signal cause they are almost bankrupt ?
i still blame google i had no issues with the radio before they borked it...
Click to expand...
Click to collapse
Just saying that unless many have the issue with the phone or radio, then its an issue.....if not, it isnt .
So in this case, it leaves hardware or carrier....assuming a stock flash didn't help.
If flashing another radio helps the OP...awesome!! But the new radio does work fine for the mass majority.
Hope it does work for him tho!