Database Users

losing connection to network

My device is O2 Mini S. Sometimes it just goes dead and nobody can call me. The funny thing is that I can call and the signal bar is in good condition. When I restart the device, signal bar goes dead too for some time and I just can't establish connection to the service provider any more. After some time it just appears to be ok and I can call again. Even incomming calls work. WTF??!? Is it something wrong with device or my service provider? It's actually very annoying that nobody can get in touch with me when i REALLY need to...

kexz said:
My device is O2 Mini S. Sometimes it just goes dead and nobody can call me. The funny thing is that I can call and the signal bar is in good condition. When I restart the device, signal bar goes dead too for some time and I just can't establish connection to the service provider any more. After some time it just appears to be ok and I can call again. Even incomming calls work. WTF??!? Is it something wrong with device or my service provider? It's actually very annoying that nobody can get in touch with me when i REALLY need to...
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Sounds like a device issue more than service. Have you contacted O2 to complain about it as it may be that the XDA needs replacing. I know my Nokia started doing something similar and would lose network for no reason even while my partners' phone (also Nokia on O2) was fine and had a full signal strength.

Try setting the network manually rather than automatic, i seem to get better signal this way.
kevo

Thanks, this seem to have worked. Haven't got any missed call in 4 days... However, this is very odd, why does it happen with automatic network detection?

losing connection, no calls, no sms
i have had the same problems,
manual network selection works.
also take a look at the preferred networks list !
in my case a natwork, i have no access to was selected.
have a nice day
t.

Hi Guys,
I am a newbie.
Well i recently got my O2 Mini S.It has thge same problem.Evn when i am on the network and the network bar shows full range,i get missed call alerts.Should i upgrade the ROM?
Is there any other soultion ?
As kevoefc said I have set the network to Manual.Hope that works !!

i added a Cellular Signal Enhancer to my phone it gave me 1-2 bars in areas where i get zero

Phone connection dropping

My P3600 phone goes insane sometimes, and will not dial out (hangs up immediately after dialing without ringing), or hangs up within 5s of me answering. Does this happen to anyone else, and if it does, what do you change to fix it?
jchap2k

Same here...
I don't know why this happens...

Me also
Running the new HTC official ROM, I noticed it first with the upgrade, I make a call like voicemail from the attention prompt and I put the phone to my head and the call is ended after like 5 sec. I though at first my ear was hitting end but tried it without moving the phone anywhere and it still will randomly end calls right after I try to make them... tried disabling smart dialing and that seemed to work at first but I could have just been lucky because it didn't keep working... anyone else besides us three?

I also lose calls or conversations break in the middle. I went to HTC service and thet recommended me to change the SIM with a newer one. I did that today and I only lost one call so far (but I was sending an MMS while talking to a customer service rep so it might be related to that). If things improve I will let you know.

Mihaig, any news about your SIM change as connection dropping solution ?
Regards

BelMaseto said:
Mihaig, any news about your SIM change as connection dropping solution ?
Regards
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I tried turning off UMTS (using only edge), and so far I have not had any dropped calls/immediate hang ups. Would getting a new SIMs card allow me to turn back on the UMTS bands?

I did have a sim card go bad that had to be replaced. The phone wasnt dropping any calls, then all of a sudden just couldnt find the network. My new card has dropped a lot of calls lately.
But i'm not too worried, my service provider thinks its there network fault and I the complete call is free as long as I phone the person back.
Anybody have a 'settings' solution, I would be very interested.

jchap2k said:
I tried turning off UMTS (using only edge), and so far I have not had any dropped calls/immediate hang ups. Would getting a new SIMs card allow me to turn back on the UMTS bands?
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Click to collapse
Well, so far no more dropped calls after turning off UMTS. I wonder if a new SIMs card would help in this matter. (mine is only 1 year old though).

Only with Car Bluetooth
There are some gaps in the conversations when I use the Nokia Carset bluetooth but with the P3600 itself no problems so far (just 1.5 week old). I do have some problems with the SD card, ones two days the info is corrupted and I need to format the SD card.

As far as I have found out, the problem has to do with 3G, the 3G hasn't got coverage everywhere ( at least here in DK ) and when the phone switches, it sometimes lose connection for a couple of seconds. Switching off the umts did the trick for me, no more hang-ups or lost connex, but then again, no more video-calls or streaming, so it's a choice... :/
Hope the next update will fix this, if there is a next one... P

Flipside said:
As far as I have found out, the problem has to do with 3G, the 3G hasn't got coverage everywhere ( at least here in DK ) and when the phone switches, it sometimes lose connection for a couple of seconds. Switching off the umts did the trick for me, no more hang-ups or lost connex, but then again, no more video-calls or streaming, so it's a choice... :/
Hope the next update will fix this, if there is a next one... P
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There is a known problem with many service providers and HSDPA. If you have the phone on automatic while in 3G mode, when your phone connects to data the phone will switch to HSDPA just for the data transmission (if your provider supports it), during the transmission calls are not received and usually sent to voicemail. This doesn't happen with all providers, but it does with many of them. You can turn off just the HSDPA and not the 3G with this tweak program http://www.fit4cat.de/thread.php?threadid=263. On my phone I have no problems with normal 3G, it is just HSDPA that is the problem.

Hmm, I already tried that program but I still had the same problem even after turning off the HSDPA only. It never happens when UMTS is off completely though. I figure when I want to use the internet I will turn UMTS back on and when I just need it as a phone I can turn it off.

Sorry folks, dumb question: where can I turn off UMTS in my trinity and only have EDGE enabled?
Thanks for your help...
mfg OK

Press the green button to start the phone, then Menu/Options. Select the 'Band' tab and change the upper box to GSM.
Leave the lower box at 'Auto'

jchap2k said:
Well, so far no more dropped calls after turning off UMTS. I wonder if a new SIMs card would help in this matter. (mine is only 1 year old though).
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I replaced with a new Cingular/ATT 3G sim and still the same problem... I'm going to also try to turn off UMTS to see if this fixes it... mostly I notice when calling voicemail from the notification tab... Oh yeah, it now says ATT as my service...

I have this problem, on the Orange and T-Mobile network, with WM5, and WM6. Have the latest radio, the works.
Bit of a joke that this happens to be honest.. a phone that has 3G/UMTS but that won't allow a certain number of calls when it switches. Pretty fundemental flaw if you ask me!
I've set band to GSM, let's see if it fixes the problem. Will download the aforementioned hack this evening.

Ah, I see it's the operators problem, not the phone's. Flipping amateur of orange not rectify this before shipping..
I've used HTweakC to disable HPSABCD(sic) and will see if the problem stops.

Not a SIMcard problem
HI Guys!
I work in a Mobilephoneshop for a Network Provider, and i had the same problem.
The first trinity that arrived in the shop was mine
And this little bas... droped many calls.
I talked with the tecnics from my prov. first we changed the sim, but same problem. Reflashed Rom same problem.
It has something to do with teh HSDPA, evrytime my trinity connectet them, the calls was dropped, the bad thing was, we have a HSDPA antenna in teh shop
Only the change of the devise worked.
Hope was helpfull and sorry 4 my bad english!
mastah

See above, use HTweakC to disable HSDPA, but leave 3G enabled.

Data Connectivity

Is this normal?
Service: TMOUS
Phone HTC HD2 Latest 2.13 Rom
I'll try to make this as short as possible.
Connectivity issues everywhere but work.
I have been speaking with T-mobile for atleast 3 weeks about my ongoing data connectivity issues, I rarely had 3g except for at work, and edge worked most of the time except for random data outages that seemed to last about 30 min or until I rebooted the device.
So about a week ago I had 2 more Service requests opened, you need 3 in order to aquire a trouble ticket with t-mobile. About 1-2 days after having these service requests opened, I started receiving pop ups "unable to connect to epc.tmobile.com" I would then have to manually turn my data connect back on, upon trying to power it on, it would prompt me to manage my connections or create a new one, I would then have to edit the apn and resave it.
So I thought well lets try one of the other apn's same issue except no pop up, my data connection would just drop, and I would have to turn it on and off 3 or 4 times. So I wiped the device and restored back to orginal settings- same issue.
I called t-mobile yesterday to check the status of my tickets after not being called back as promised for like the 8th time, I ended up telling the story to about 7 different people, Eventually coming to the conclusion that they first want to send me a replacement. So ok no big deal $10 bucks for shipping and $10 bucks to replace my armor. Lo and behold today it works amazing not 1 3g drop, slacker has not stopped playing in the middle of a song and my data connection has not randomly turned off.
EXCEPT
When I send or receive data in the form of a text msg.
Data will totally drop, It will come back as soon as I try to browse the web or wait about 5-10 minutes.
Any ideas?

If it isn't full 3G, then the data connection will pause to receive the text message.

rp-x1 said:
If it isn't full 3G, then the data connection will pause to receive the text message.
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How can you tell if its full strength? I read that the bars do not mean that 3g is full strength, just that the cell service is.
Either way, I have full bars and it does this at any location I test from.
It's just strange that everytime I speak with T-mobile my phone symptoms totally change.

borguo said:
How can you tell if its full strength? I read that the bars do not mean that 3g is full strength, just that the cell service is.
Either way, I have full bars and it does this at any location I test from.
It's just strange that everytime I speak with T-mobile my phone symptoms totally change.
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Sorry, I meant when it is EDGE or GPRS, rather than HSDPA/3G.
Sometimes mine pauses a 3G connection too, but not all the time.

rp-x1 said:
Sorry, I meant when it is EDGE or GPRS, rather than HSDPA/3G.
Sometimes mine pauses a 3G connection too, but not all the time.
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Ahh ok I see, good to know it shouldn't do it all the time , especially at places it did not happen prior.

Tested my gf's HD2 which is currently half way across Phoenix, Arizona. She now has the same disconnect from data problem after receiving a text with a picture.

Call drops and No signal

So here iam with yet another problem....here goes my story
Purchased the phone in nov 2010 and had airtel connection at that time....happiness ended in just 2dayz after facing some serious
Call drops,went to service centre and all they did was a factory reset,nothing changed.....everyone advised me to change my service provider,so i did.went for Tata docomo and call drops gone but now my phone was losing signal frequently,sometimes i got a message popup saying"refreshing sim data" and lost E sign and also couldnt make calls for few seconds.....sometimes while talking phone loses the signal sign and gets a red no signal sign instead........sometimes when someone tries to call me they get phone switch off msg but my phone is still running....and from last few days the packet data option gets unticked by itself,have to restart phone to tick the option.....and more probs....
Now 1 thing is clear the problem lies in the phone and not the service provider...
Even others are facing the same problem,just google "samsung galaxy 3 call drop"
So after my exams i will try to get my phone replaced no matter what they say....
Will they replace it?got it in nov,quite old but i have my bill and box....
BTW typing on phone sucks...
Sent from my problematic galaxy 3

I have faced this problem a lot... This happens when GPRS/Edge services are enabled.
To the best of my knowledge, DDJP2 has the fix for that (Got a call from Samsung to confirm this to me)
Try that and let me know
I moved to airtel since thats the network compatible with G3 and i didnt had call drop

jaskiratsingh said:
I have faced this problem a lot... This happens when GPRS/Edge services are enabled.
To the best of my knowledge, DDJP2 has the fix for that (Got a call from Samsung to confirm this to me)
Try that and let me know
I moved to airtel since thats the network compatible with G3 and i didnt had call drop
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Click to collapse
bro iam currently on ddjp2 only but i flashed it with odin...
i was on airtel before docomo and it was worse....
and i dont want to disable/enable again and again....
i just want a replacement!!

Mobile data issue

My note4 almost always has a white 3g above the service bars. However, even though I still have 3G and there is no change in service bars, periodically my text messages will not send and internet will not work. Keep in mind that my phone constantly says it is connected to 3G. It also happens that the signal bars disappear. After reboot both are OK. *
I do not have any malicious*apps*and my phone is not rooted. Have messed with network settings and have seen no change.
And YES my mobile data is turned on.
Any help is appreciated!

I have the same problem, right now I am trying to figure out if it's software or hardware related...

I would hazard a guess that it is sim card related.
Sent from my SM-N910F

I changed my SIM card, same problem.

What are your APN settings? What geo area are you in?

I am from Romania. My APN settings are default from the provider (Orange).

torokzsolt84 said:
I am from Romania. My APN settings are default from the provider (Orange).
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Click to collapse
I'm also with Orange Romania and I don't have problems (yet).

pedmond said:
I'm also with Orange Romania and I don't have problems (yet).
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You got your phone from Orange? It never happened to you that it looks like the phone has signal, but in fact the signal froze and I cannot make a call or to be called. After a restart it's ok for a while. Also if I turn mobile data off is ok.

torokzsolt84 said:
You got your phone from Orange? It never happened to you that it looks like the phone has signal, but in fact the signal froze and I cannot make a call or to be called. After a restart it's ok for a while. Also if I turn mobile data off is ok.
Click to expand...
Click to collapse
I got it from cel.ro. A couple of times it took a few seconds to start dialing, but I had no real problems yet.

csutikisx said:
My note4 almost always has a white 3g above the service bars. However, even though I still have 3G and there is no change in service bars, periodically my text messages will not send and internet will not work. Keep in mind that my phone constantly says it is connected to 3G. It also happens that the signal bars disappear. After reboot both are OK. *
I do not have any malicious*apps*and my phone is not rooted. Have messed with network settings and have seen no change.
And YES my mobile data is turned on.
Any help is appreciated!
Click to expand...
Click to collapse
If have exactly the same issue !!!!
Start with full signal strength and going down to the lowest strength and minutes later no signal !!!
Reboot or Airplane mode can undo this, but the cycle starts allover: Full strength, less strength and no signal.
Tried with 3 different carriers !!
And 2 Note 4's !!
I have the Snapdragon version SM-N910F
What is going on ??

Have this issue with my exynos variant in australia its imported and full 3g signal and slow or no data throughout and sometimes h+ even g or nothing

Next week samsung will come to me and bring my phone to their service and will check whats going on. Anyway I think it's more like hardware issue than software.

I have the same issue with exynos variant I bought the fone from the official dealer in my country,
My data service was not working at all.
I got it working by going to mobile network and choosing WCDMA/GSM option instead of LTE/WCDMA/GSM. although now i cannot get 4g but at least the data is working on H or H+

I think its software as a few people have had this issue both variants also

Same problem here, Exynos factory unlocked SM-N910H. All of a sudden I look at my phone and I discover it's showing "Emergency calls only", sometimes H or H+ but no internet. A reboot OR Airplane mode OFF and then ON will solve both problems. That's ridiculous... I've literally tried everything, factory reset, changed sim, messed with the APN settings. I've had this problem since day 1, even before I rooted it. Darn this, I never had any problems with my HTC One X, and I am using it ATM until Samsung come up wit a fix with an update or something. I hope it's not hardware related as my Knox warranty is void 0x1. :crying:

The same issue happened to me. I have 910c variant from Lithuania. A week ago phone started to lose 4G and after few minutes "no signal". Few reboots and it is working again, but after some minutes there is no signal. What I did notice is that there was no signal problem in my city centre where 4G signal is very strong, but when I did some speed test there, it was only ~2-3mbit (before this problem it was ~50-60)... Unfortunately I did not test this issue by turning off 4G. I did deliver my phone to warranty service 5 days ago and they send phone to Latvia to do 4G tests. I refused to repair my phone and demanded to get new phone. Waiting for the answer

Also rooted my phone so no warranty for me. Changed carriers today and they are doing upgrades so stuck with useless service :/ but i think either it's something to do with root or software i dont think its hardware
---------- Post added at 10:42 AM ---------- Previous post was at 10:40 AM ----------
Fuxas plz reply to.this thread when you hear back thanks

I dont think it is software, because I tried factory reset and it did not help.. Of course, when I get the results I will share them here.

If anything it's NOT the root because I am having this issue before I ever rooted it. My best guess it's the software and I've researched a lot about this problem, seems it's specifically related to some samsung devices and not only the Note 4.

Yup its a samsung problem and hopefully it gets rectified