Develop Bugs

WiFi connection kills mobile network

I'm having an issue that happens about 50% of the time. When in a WiFi zone and connected to a router, quite often the mobile network will lose connection so I cannot make calls or send texts. None of the mobile bars are illuminated and there appears to be a little "x" above them. Leaving the WiFi zone disconnects from the router, but the mobile network still does not come back.
I have to reboot the phone before it picks up the mobile network again. It's really frustrating because without checking my phone, I never know whether it has mobile network connection or not (when i'm in a WiFi area such as work). I know the area i'm in has mobile connection, but WiFi just seems to kill it.
This is happening on the stock HTC ROM and the latest Oxygen ROM that I flashed to. Is this a known big or any tips/tricks?

Go to Settings > Wireless & Networks > press Menu, select Advanced, and check your Wi-Fi Sleep policy settings.

maybe you have an old radio? i would suggest that you try to flash another radio to see if it solves your problem. again, just a suggestion!!!

MasDroid said:
Go to Settings > Wireless & Networks > press Menu, select Advanced, and check your Wi-Fi Sleep policy settings.
Click to expand...
Click to collapse
Hmmm, I did not know about that. I'm not sure it'll fix the issue, but the WiFi turning off an on did somewhat bug me, so cheers for showing me that setting anyway
mariosraptor said:
maybe you have an old radio? i would suggest that you try to flash another radio to see if it solves your problem. again, just a suggestion!!!
Click to expand...
Click to collapse
Well, I don't know what my stock radio was, but when I flashed to Oxygen I tried the one the dev recommended. Perhaps i'll try another.
Would 3 Mobile be really annoyed if I took the phone in for help and it was flashed to a custom ROM?

alex98uk said:
Hmmm, I did not know about that. I'm not sure it'll fix the issue, but the WiFi turning off an on did somewhat bug me, so cheers for showing me that setting anyway
Well, I don't know what my stock radio was, but when I flashed to Oxygen I tried the one the dev recommended. Perhaps i'll try another.
Would 3 Mobile be really annoyed if I took the phone in for help and it was flashed to a custom ROM?
Click to expand...
Click to collapse
You could also try a modified kernel and as suggested above, a different radio version as this can help with issues related to Wi-Fi reception, GPS signal strength, and battery life.
If you purchased the mobile from 3 Mobile, then they may suggest that your warranty is void as you have 'hacked' it. You can always flash back to stock ROM and then check if the same issue persists. If not, then go back to a custom ROM, try different radio versions and some may work better as it can depend on your network/area, and if still not resolved, try flashing a compatible modified Kernel from the Desire Android Development section of the forum.

I'm using Leedroid 2.3b with RIL optimised for 5.11.05.27, and I notice weak signal with WiFi, it is present, but WiFi bars change all the time, among other symptoms similar to those he has described. The other day I went out of range of WiFi network, but the phone hasn't switched to mobile network, but instead the WiFi icon remained and there of course was no connection. Would you define this as an ROM or radio issue? Is there any sense in changing the radio to other when the ROM developer stated this one is the best?
A few days ago I flashed the newest radio (I was using batt+ up to that moment) because I experienced echo during calls. Now the echo is gone, but this happens.
Sent from my HTC Desire using Tapatalk

erklat said:
I'm using Leedroid 2.3b with RIL optimised for 5.11.05.27, and I notice weak signal with WiFi, it is present, but WiFi bars change all the time, among other symptoms similar to those he has described. The other day I went out of range of WiFi network, but the phone hasn't switched to mobile network, but instead the WiFi icon remained and there of course was no connection. Would you define this as an ROM or radio issue? Is there any sense in changing the radio to other when the ROM developer stated this one is the best?
A few days ago I flashed the newest radio (I was using batt+ up to that moment) because I experienced echo during calls. Now the echo is gone, but this happens.
Sent from my HTC Desire using Tapatalk
Click to expand...
Click to collapse
I think it could be ROM or Radio related... I was not aware that the associated RIL was to be flashed also although I know it is always recommened as it can provide an important part in handling the communication between the Radio and the Kernel.
Have you tried without the RIL and just the radio alone? Try that and see if it improves the situation.

I downloaded and flashed RIL for this radio. It shouldn't make any difference though since this RIL is supposed to be in the ROM already. :s
This radio is also downloaded OTA from our provider. I checked my sister's Desire, she has the same radio on her stock Desire (i.e. it was downloaded OTA).
Sent from my HTC Desire using Tapatalk

Is there any good advice on what Radios work well and what they excel at? I see quite a lot posted, but no hard information on what works best
What I would love is one that actually picks up mobile signal. Where I live, we get very poor reception, however, usually 1 bar is possible. My Desire never picks up anything whereas my old N95 8gb used to get 1 bar as does my brothers phone.
It's good enough for texts at least. Any advice on radios then?

[Q] DATA connectivity problem with ARC

hi people
i'm noticing a problem with my data/edge/3g connection.
it simply stops working at times .. it just shows data being sent but no data received and my internet doesnt work.
This becomes fine after a reboot but again has a problem after a few hours
Is anyone else facing this problem too with Data connectivity ?

Yes, same problem with my german arc.

I am not facing any problem with data connectivity

same problems here, I found that stopping the WIFI and re enabling it is enough to get it back on track but its still a serious issue.
I don't like finding out I am missing e-mails an hour too late.

I only found it happens when I switch from 2G to 3G with data on.
So my work around is to turn data off first before switching between 2G <-> 3G. After that, turn back the data on.

This only happens to me on WIFI, on 3g everything is fine.
I am thinking about flashing the UK build to see if it helps.

I used to have the same problem with my x10. Data just stopped working randomly. I used to have a widget to turn 3g on/off and when the data stopped working, so did the widget. Was strange, and only a reboot solved it.

I have wifi problems,it sleeps after a while,no sleep is selectet.
Sent from my LT15i using XDA App

i have wifi problem, at first it disconnects by itself and now much worse, my arc could not even identify or scan my wifi at home. Anyone also have this issue? or anyone know what to do.

One time i had this issue,i had just turn wifi off then on.
Sent from my LT15i using XDA App

death.eater said:
i have wifi problem, at first it disconnects by itself and now much worse, my arc could not even identify or scan my wifi at home. Anyone also have this issue? or anyone know what to do.
Click to expand...
Click to collapse
same here. wifi works fine. til awhile later (evactly how long i didn't notice. will keep track)
After which no matter how i turn off & on wifi, forget the network & re-enter p/w. even off & on my phone. wifi status "connecting.... disconnected....connecting.... disconnected." will drains off a lot of battery if go unnotice.
i found a cumbersome work around... off the arc wifi & reboot modem/router. then can "obtaining ip address". but thing is, all other devices works fine.
so is it arc's fault? since all others can connect to wifi except arc
or
router's fault? i wasn't doing / changing setting on the arc. just reboot router. but wouldn't it be silly to do this everytime i use wifi on the arc?

so still no fix? sometimes it happens to me a few times during an hour...

Guys maybe this will help you out..
Go to wifi settings, press menu button->select advanced->under wifi sleep policy, set as never sleep
If not set the wifi shuts down to save battery.
And wifi is given more priority over 3g or 2g connectivity, so if you have wifi on you may not have proper connectivity to 2g or 3g

Turn on/off airplane mode, if you can't get a data connection. In a german forum some guys discussed about issues with multi-sim-cards, but I guess it is software related.

karthik.chopper said:
Guys maybe this will help you out..
Go to wifi settings, press menu button->select advanced->under wifi sleep policy, set as never sleep
If not set the wifi shuts down to save battery.
And wifi is given more priority over 3g or 2g connectivity, so if you have wifi on you may not have proper connectivity to 2g or 3g
Click to expand...
Click to collapse
Thanks for the tip, I did not know about the menu, but I already had it set to never through "Spare parts"

Every time im browser or facebook ,its sleep,on x10i is never happent.
Sent from my LT15i using XDA App

i changed my number and sim a couple of days back. with the same provider. my arc after being out of signal cant reconnect to the data network. the phone calls work fine. but the data is giving me problems. im still confused as to why this is happening. whenever i activate and deactivate the airplane mode, data connection comes back alive. could it be a problem with my sim or the phone radio?
edit: oh and i also reflashed my phone via sony ericsson update service, the problems still there.

jakhan86 said:
i changed my number and sim a couple of days back. with the same provider. my arc after being out of signal cant reconnect to the data network. the phone calls work fine. but the data is giving me problems. im still confused as to why this is happening. whenever i activate and deactivate the airplane mode, data connection comes back alive. could it be a problem with my sim or the phone radio?
edit: oh and i also reflashed my phone via sony ericsson update service, the problems still there.
Click to expand...
Click to collapse
Same problem here. This is really frustrating.

I dialed *#*#4636#*#* then phone info and pressed menu. Then I selected enable data connection (was disabled previously). The data didnt enable then. I went to settings>mobile network and enabled data from there too. Ever since, no disconnections. I dont know if this procedure or the fact that I tried to seat my sim properly worked, but u may try either. Let me know if this works....
Edit2: the above doesnt work.
Sent from my LT15i using XDA App

I inserted my old fat sim and recreated the situation, the data automatically reconnected. The newer sim that's a microsim is causing the problem.
Sent from Xperia Arc

[CM10] loosing data connection until reboot

Hi,
Usually i have wifi enabled permanently, as i have coverage at home, university and t-mobile hotspots. But my nexus sometimes does not get a working data connection if i disable wifi or come back from flight mode. Icon shows reception and 3G/H/H+ but stays grey. I can't access any internet services like mail,http...
If i reboot the device, everything is fine.
Any ideas ?
Latest (-3days behind max) CM10 with stock kernel, XXLF1 baseband, tmobile germany
P.s.: tried to search with google, found nothing. Currently the nexus is my only internet-capable device, so i am sorry if repost...
Sent from my Galaxy Nexus using xda premium

Try toggling airplane mode?
Beamed from my Grouper.

Same issue here. Get random signal losses and afterwards no data until reboot. I've experienced this with other Roms as well. Toggling the airplane mode sometimes help for data recovering.

Try setting your minimum CPU above 500 Mhz...

How can that change the signal issues?

Maybe toggling wifi helps (sometimes)
un.droid said:
Same issue here. Get random signal losses and afterwards no data until reboot. I've experienced this with other Roms as well. Toggling the airplane mode sometimes help for data recovering.
Click to expand...
Click to collapse
I have exactly the same problem on galaxy s. The status bar shows mobile network connection, but the symbol stays grey, and connection is not there. Reboot is the only safe way to solve that. Sometimes toggling airplane mode helps, last time toggling wifi helped.

Changing APN seems to be helpful. Someone that looks good with the current provider.

almost same issue for me...
but there is some weird difference...
I have a GSM Galaxy Nexus latest radio, consistent RIL and latest CM10.
I lost data suddenly while browsing.
I can see blue signal with 3G, start browse and it change to H/H+. No problem until now but, when data returns to 3G, all further requests stay "pending" for a while (phone call is not working in this state!!!!). after a minute.... CRASH, all signal lost. Something like a reset.
even toggling data does not work... I simply have to wait that the phone decides to work again.
I'm from Italy, carrier is Vodafone. Someone with some hint?
thanks!

martin_nrw said:
Changing APN seems to be helpful. Someone that looks good with the current provider.
Click to expand...
Click to collapse
It's the correct APN, did autoconf OTA.
Sent from my Nexus 7 using xda premium

un.droid said:
How can that change the signal issues?
Click to expand...
Click to collapse
Because on earlier builds of some AOSP ROMs, the radio had a tendency to go to sleep and not wake up when the frequency dropped too low. The common fix at the time was to use a higher number for the minimum frequency...
Read you must...

I was looking up the answers to this same problem. When I'm staying still my internet is fine but when I'm driving down the road I lose signal. I did a google search for "cm10 losing data connection". This is a "normal problem" it is caused from changing between 3g and LTE 4g. I'm still looking up solutions to this problem.

[Q] ace 2 network problems

Hello
I've just bought a new galaxy ace 2 and I am experiencing some problems.
When I'm using only gsm network type (i think, now I'm testing HDSPA), typically, when I'm logged on icq, mobile sometimes loosses signal and displays there is no service. After few seconds is everything OK and network is back at full singal. This can be seen also in battery usage view, when I'm having always yellow line with thin red places.
I'm now using it with mixed mode on HDSPA and there are no problems with network.
The phone is under warranty, so there is no problem, but I dont have much time and first I would try other solution. I tried to flash it with odin to same fw, but no change. I tried to google it but I didnt find any solution. Could you give me advice?
Thanks for answers

Odp: [Q] ace 2 network problems
Check phone with another sim card (another operator, wipe phone - go back to stock settings)
Sent from my Ace 2 using xda premium

Thanks for reply, I'll try
Today I was all time on HDSPA a there was no problem

Had this problem before I updated to 4.1.2. Use to happen on trains for some reason as well.

Yeah I've same paroblem with a specific operator.(stock GB rom)

still experiencing that problem, any more ideas?
no problems when 3g or data connection off
thinking about installing mc8 but I'm not sure, because I've a 8160P version

I also have problems with mobile data. I have done everything :factory reset, flashed roms, and finally fid solution yesterday but i have problem again . My mobile data doesnt work no any type of network and do icon
Please somebody help !

Stevk said:
Had this problem before I updated to 4.1.2. Use to happen on trains for some reason as well.
Click to expand...
Click to collapse
Well the "train" issue is due to the train being like a faraday cage, blocking the various microwave signals, the reason you get a signal on a train is because they have amplifiers to retransmit the signal into the train and vice versa.

...what network?

I have problem with mobile data. Apn: ERONET START (gprs.eronet.ba) i can acess with other phone on my sim card. Problem is in my phone but i dont know how to solve it. I can send messages and call but no any sign of data
Sent from my GT-I8160

Losing Data Connection on Idle

Hi all,
Im on Viper Rom 6.2.1 Rom, Elite Lunar Kernel, and latest OTA radio.
My 4G connection is great when connected, I hit the 40s and 50s download speed.
The problem im having is that when the data connection is idle for like 30 seconds, all of a sudden I lose data connection. the 4G LTE logo is still showing but the download/upload activity arrows no longer flashes. It goes back when I turn mobile data off then on again. Then I lose connection again when idle.
What could be the problem?
Thanks

android06 said:
Hi all,
Im on Viper Rom 6.2.1 Rom, Elite Lunar Kernel, and latest OTA radio.
My 4G connection is great when connected, I hit the 40s and 50s download speed.
The problem im having is that when the data connection is idle for like 30 seconds, all of a sudden I lose data connection. the 4G LTE logo is still showing but the download/upload activity arrows no longer flashes. It goes back when I turn mobile data off then on again. Then I lose connection again when idle.
What could be the problem?
Thanks
Click to expand...
Click to collapse
I just had a similar problem recently like this. Turns out i burned out my 4g sim card. Before changing roms or firmware i would suggest going into a VZW store and get a new one. They are free, they dont even look at the phone. Just tell them LTE connectivity isn't working correctly and that the sim card is bad. they will give you another one.

synisterwolf said:
I just had a similar problem recently like this. Turns out i burned out my 4g sim card. Before changing roms or firmware i would suggest going into a VZW store and get a new one. They are free, they dont even look at the phone. Just tell them LTE connectivity isn't working correctly and that the sim card is bad. they will give you another one.
Click to expand...
Click to collapse
Thanks. I figure it was probably the sim card. I will try that.

I am having a similar situation. I have data loss after having hotspot on for a little while and any type of reboot is the only remedy (restart of shell, full reboot, adb reboot, etc). I already swapped Sims at the Verizon store, tried different roms, tried flashing different firmware and radio combinations. Any suggestions?
Sent from my HTC6500LVW using XDA Free mobile app

Uzephi said:
I am having a similar situation. I have data loss after having hotspot on for a little while and any type of reboot is the only remedy (restart of shell, full reboot, adb reboot, etc). I already swapped Sims at the Verizon store, tried different roms, tried flashing different firmware and radio combinations. Any suggestions?
Sent from my HTC6500LVW using XDA Free mobile app
Click to expand...
Click to collapse
I too am having similar issues, though it appears more random than associated with using hotspot.
Every few hours, all radio connectivity but Wifi shuts off. I get the no service icon in the status bar. Only a reboot fixes the issue.
Running teamEcliptic Rom 4.4.3 v1.4, kernel: EliteLunar 3.4.10, baseband: 1.13.41.0421, build: 6.06.401.1.
Soff, unlocked, root, etc.
When I have time to spare plan to restore a stock rom (keeping S-off though) to see if that fixes the issue.
Any advice from those more versed in the One M7 would be appreciated!