[Q]my carrier's 3G signal is blocking my GPS - Android Q&A, Help & Troubleshooting

HI.
something very strange have been happening with my phone and my carrier's signal.
I have a GSM galaxy nexus running CM 11
for some reason, I can't have both a 3G data connection and my gps work at the same time.
I've tried lots of other combinations, (wifi on, wifi off, data on, data off, 2g only, airplane mode) and with all of them my GPS works perfectly.
the second I allow my phone to use the 3G connection, the GPS dies stops working completely until I reboot.
I've tried probably 6 different roms so far, including going back to stock and trying all the stock images google released for my phone.
then I decided to try another sim from another carrier, and guess what? GPS works perfectly, whether is 2G or 3G. so I'm thinking, is my carrier's 3G signal somehow messing with my phone's GPS?
I can't really find anything about this two things conflicting with each other. hope someone here knows a little more about it, or maybe give me a little hint as to what else could I try next?
thanks!

after trying pretty much everything, I bought a new sim card from my carrier and guess what? problem solved.. or so it seemed.
my GPS worked perfectly for about 2 days. then the exact same thing again. 3G enabled? no GPS.
I hope someone reads this and could help. I have no idea what to do anymore.

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No Data When Going from 3g to Edge?

I've been having this problem for about 2 weeks now. First I was using Radio 1.50 on the AT&T network in South Jersey and out of the blue when the connection would go from 3g to edge I could no longer connect to the internet, receive emails or anything, voice was fine. When I would get back into 3g range everything would work again. So I upgraded to radio 1.54.07 and at first everything was fine no problems what so ever. But after 5 days this radio does the same thing, I cannot do browse the web or get my email if i go from 3g to edge but everything works fine once it is in 3g range. Anybody have similar problems or know how to fix them?
Just to clarify things, when it switches from 3G to Edge my phone still shows that there is a data connection but for example if i try and look up something in Opera it says looking up host and then times out. Any program trying to use the data connection times out, which is weird since I never had any problems til about a month ago. I've tried soft reseting and still all it will find and connect to the gprs signal but all my connections time out if i try to look anything up
I have the same misterious problem. Did anybody - especially jc67 - already found a solution for that?

Optimus dropping calls in 2G mode

Hi Guys,
My optimus calling service is not reliable at all in 2G mode. Is it just mine or there is really a problem with 2G networks. When I switch to 3G everything seems to be ok. Sometimes it drops the connection during the calls. Sometimes I can hear the other side but they can't hear me.
Overall it is a very good phone apart from calls dropping.
No issue
Been using it for a week now. Have flagged the 2G explicitly to conserve battery. Not had any case of call drops or one way traffic.
Cheers,
Vikram.
I use only 2G and I speak a lot. No problem at all.
Thanks guys, so I assume that next step should be to leave it for repair. I'm afraid that they will return it without any changes as this behaviour is not so regular.
Also my phone sometimes drops calls. I've resolved the issue replacing SD card, from Sandisk 16gb class 2 to Transcend 8gb class 4. Now works well, hope the firmware update resolve the SD compatibility problems
Is it really possible the only reason to be in the SD card? There is no much sense on this but who knows?!
I think it's not a sd-card problem, because i have the same problem here in Hamburg/Germany and for me it's the provider 'O2'. Same thing before with my Samsung Spica and my girlfriend ('O2' too) has a X10 mini, same calldrops...
Maybe you can try the simcard with another mobilephone!?
Greetings
Yes I can confirm the drop calls with o2 germany. I was two weeks ago in Köln and had the same problem but to be honest I had similar problem with e-plus.
matematic said:
Hi Guys,
My optimus calling service is not reliable at all in 2G mode. Is it just mine or there is really a problem with 2G networks. When I switch to 3G everything seems to be ok. Sometimes it drops the connection during the calls. Sometimes I can hear the other side but they can't hear me.
Overall it is a very good phone apart from calls dropping.
Click to expand...
Click to collapse
I use 2G mode to save battery life. I've not had any problem so far.
I have the same problem too. I will try to figurate if excists in 3g mode
Maybe your network has issues , or your signal is quite weak . I have full signal in 2g at all times
The problem could be strictly with the network reception in your area where 2g is very limited. With repairs they may be unable to detect anything wrong with the phone itself. See if you can find someone else on the same network, preferably different phone, and checking their status on 2g.
unfortunately my home has excellent reception, i have a second old device(nokia 6310i) and it works perfect with it
I have this problem too + missed calls.Keep reading but no solution so far.Flashed to prime v2 and nothing.I don't think the problem is in the network because i try with two different sims and problem exist but will buy another sim and see.
Same problem here. Also the voice quality is really horrible and sounds like it's coming through a pipe LOL.. Is this normal or?
FnH84 this is not normal.I thing that is software problem(other brands has the same problem).Maybe any process or application i don't know but this phone is useless as a phone.Everiting else works great but ............I will keep trying other rom-s other sims and keep reading for solution.
Ok, i found a convient solution for me. downloaded ,status bar 2g 3g, from market. i have always data off unless i need it(in 3g mode always). this program show in status bar if your network is 3g or 2g without having data on all the time cause consumes much battery. give it a try
Ok i install the program but it always shows 2g even my data is off.Is that normal.What the program show in your statusbar.
did you uncheck the 2g mode from the settings?

[Q] Data connectivity issue when moving 2G to 3G

Hi all,
I'm having a data connectivity issue on my phone when moving from 2G to 3G. If I'm connected to 2G, then move into an area of 3G coverage the phone will successfully migrate to the 3G network, however the data connection will often not start up for between 30 minutes and severanl hours. Flipping airplane mode will *sometimes* fix it, but more frequently, even rebooting the phone won't work. However, if I lock the phone to 3G from the settings, I do not encounter this issue at all. It only happens on my home provider (Jersey Telecom - they're small). In the UK, on Three, it didn't happen.
So, given that the problem can persist over reboots, and doesn't happen in the UK, it makes me think it's more likely a network issue, so I called them up. The network engineer managed to reproduce the issue on his colleagues Samsung Galaxy Note, but they are adamant that it's a phone issue and not a network issue, and is a matter of Samsung not sticking to the specs. The phone isn't currently rooted, but I can root it if it will help me debug the problem. From the sounds of it, it may be problem consistent to all Samsung radio phones on our network.. and I really don't want to switch to another phone.
They say that from their logs, the phone is not always trying to create (or presumably, migrate?) a PDP when moving to a 3G network. It's hard to say whether it's a problem with the phone or their logs.. has anyone else experienced a similar issue? Does anyone know how to access logs about the phone trying to create a PDP etc. so that I have something to compare with theirs?
Thanks
check out the modems thread and try a better modem
Sent from my checkrom jellybean powered sgs 3

[Q] Portable Hotspot/Android Tether limited connectivity

For some reason, when I tether my phone's Internet it works fine for a moment or a long time and then it switches to limited connectivity. No Internet connection on any of the connected devices, even if I reset the connection. Only restarting my phone seems to work.
Using stock Android 4.0.4 and the stock tether.
Has anybody else experienced this? Any solutions would be greatly appreciated.
Well, none of you bothered to reply to this, so I might as well. After I upgraded to 4.1.1 it seemed to work better, and it wouldn't turn off if I leave power saving off. However, the internet still randomly refuses to work on my laptop and only connects again if I restart the phone.
raykyogrou0 said:
Well, none of you bothered to reply to this, so I might as well. After I upgraded to 4.1.1 it seemed to work better, and it wouldn't turn off if I leave power saving off. However, the internet still randomly refuses to work on my laptop and only connects again if I restart the phone.
Click to expand...
Click to collapse
4G or 3G model? I have to turn LTE off because if it bounces around from LTE to 3G+ on my i9305T it tends to hang. I cant use wifi tether at all when CM10.1 when LTE is enabled, well I can use it but its very unstable. Try turning LTE off. If that's not the issue I'm sorry I can't help.
Ritzo90 said:
4G or 3G model? I have to turn LTE off because if it bounces around from LTE to 3G+ on my i9305T it tends to hang. I cant use wifi tether at all when CM10.1 when LTE is enabled, well I can use it but its very unstable. Try turning LTE off. If that's not the issue I'm sorry I can't help.
Click to expand...
Click to collapse
I don't really know because I don't have LTE at my location, the best reception I get is HSPDA+ which I heard is like 3.5G. I'm not really sure if my device is capable of 4G/LTE. It occasionally switches to E-GPRS when I'm not using the internet. But very rarely (like maybe once in 2 days), the internet just refuses to connect both in my phone and laptop eventhough the data indicator has the green and orange arrow on. When I restart it, it usually works fine. It's really confusing.

[Q] Why is the mobile data on 3G and H so slow / not working at all?

Hey guys,
I'm currently having problems with my mobile data. I was running stock 4.3 and flashed to CM 13 (I did a backup of course). My mobile data was working fine at that moment.
Since my the front glass was broken but the LCD was intact, I decided to send in the S3 for repair to a shop that fixes the glass but does not touch the LCD. I got the device back two weeks later and everything was good.
The problem started happening, when I put in my SIM card, I noticed, that 3G or H is not working at all (or very slow). Pages took a minute to just load the HTML. I thought that it was probably an issue with CM 13 or APNs and updated to the newest nightly. Still, not working there. I tried calling the phone and sending SMS and everything worked.
I then decided to go back to my backup of Stock because maybe CM13 was bugged. But now the 3G is not even working on my backup of stock. Regular G works, but is too slow to use. When I switch to 3G the connection is too slow and acts strange by switching to G or just losing the connection entirely.
I checked my APN and that didn't help.
Could that been cause by the repair? Maybe broken the antenna or something? But isn't it inside of the phone and shouldn't be touched by a front glass repair?
It's not an EFS problem I think, since I still have my IMEI and calling works, internet on G works as well but not on 3G.
If it's the antenna, how hard is it to repair?
Thanks for trying to help me!
This happened to me,
Internet will only work on
E, G, H, and H+
Internet will not work on
3G
Ask your carrier if they use Fast Dormancy, I turned off Fast Formancy and it's fine
Edit: do research if you wanna know more about Fast Dormancy
Thanks for the help, but unfortunately that doesn't work either.
I've witness another strange phenomenon where the mobile data is working a few meter away from my house but not near it. The strange thing is, it used to work and also works on other smartphones with the same carrier.
Aliens.. No seriously.. If you can get Hspda then there's nothing wrong. Your device has determined that the signal isn't strong enough to lock on so it chooses a stronger signal.
Sent from my HTC One M9 using Tapatalk

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