Develop Bugs

There MUST be a better way of switching 3G on and off!

The underlying problem here is that the 3G signal in my house is quite weak, but not so weak that it is undetectable. If I leave my TP2's band setting set to "Auto" then it keeps trying to switch into 3G mode, then dropping back to 2G, with a delay every time it does it. (Drains the battery too). So I'd like to be able to quickly switch between 2G and 3G mode. (Obviously I could just leave it set to 2G all the time, but this is a waste when I'm at work or in some other place which actually has a good 3G signal).
My current solution is that I've got a start menu shortcut pointing to CMBandSwitching.exe in the Windows folder. (This is the same program that is launched if you go to the TouchFLO "settings" page, then hit Communications/Phone/Band). In here I can change the Network setting between "Auto", "GSM" and "WCDMA" which has the effect of turning 3G on and off.
But... there are horrible side-effects. Switching in this way causes the current data connection to get messed up, so that nothing can actually use it to access the Internet. Web browsers stop working, and I can't receive email. I've tried switching the data connection off and back on in Communications Manager, and this works sometimes; but even when it does, it messes up my ActiveSync schedule settings. And usually I simply can't get the data connection to turn back on. More often than not, when I change the Band setting I end up having to hit the reset button to get everything functioning normally again.
There must surely be a way of turning 3G on and off without disrupting the data connection and ActiveSync settings and requiring a reboot? The phone itself can do this in "Auto" mode if I'm moving between areas of good 3G signal and zero 3G signal. Is there perhaps a way to tweak the behaviour of "Auto" mode so that it needs a higher 3G strength signal to switch to 3G? Or is there any way to convince the phone (while in Auto mode) that there isn't really a 3G signal present (even though there is really a weak signal) so that it switches to 2G in a side-effect-free fashion?

(bump)
Hm. 136 views and no reply.

You might check into WMLonglife
http://forum.xda-developers.com/showthread.php?t=478519
I haven't tried it, but it may work for you. It functions more based on what you are doing with the phone as opposed to what bands are available.

mwelch16 said:
You might check into WMLonglife
http://forum.xda-developers.com/showthread.php?t=478519
I haven't tried it, but it may work for you. It functions more based on what you are doing with the phone as opposed to what bands are available.
Click to expand...
Click to collapse
I'll check that out, thanks.

Data connection problem when coming back from Airplan mode...

I've stumbled on a strange issue.
If I switch the Desire to the Airplan mode when the Data connection is off (I use the appropriate HTC Data connection widget to do this), when I switch back to Airplan mode off, the phone is no more able to restore the data connection.
The only workaround found is to restart the phone.
Has anyone got the same experience?

Two questions.
1. When you say you switched off data connection, are you talking about syncing, wifi, mobile network, ... etc?
2. Why do you want to switch off data connection and turn on Airplane Mode? Doesn't Airplane Mode cater for shutting down all wireless?

1. I'm talking only about the "Data connection" option on "Wireless and networks" menu, that is switchable via a special HTC widget. Switching this option off, the phone is no more able to access to the GPRS provider. I often keep this option off to save battery life. I turn Data connection on, if I need to sync and access to Internet.
2. This is not the matter, just it happens. Eg. When I go to sleep, I turn the Airplane mode on, doesn't matter if the Data connection is on or off (it is possible that it is on) in order to avoid any disturbs (calls, sms, etc.).
I just wonder if this issue is a true bug of the phone:
1. Switch off Data connection
2. Switch on Airplane mode
3. Switch off Airlplane mode
4. Try to activate Data connection (for me it seems it's not possible without a reboot)

Had a similar problem which I wrote to HTC about: after the phone has been data connected via wifi and I leave the wifi network it often will not connect to data via mobile network (GPRS/3G), giving the message "connection failed" if I try to manually connect in the "mobile networks" section of the "wireless & networks" settings page.
It seems to have fixed itself now, and I think it's because I've since ticked the option to "enable always-on mobile data", which I had turned off to save battery. Give it a try.

yurikg said:
Had a similar problem which I wrote to HTC about: after the phone has been data connected via wifi and I leave the wifi network it often will not connect to data via mobile network (GPRS/3G), giving the message "connection failed" if I try to manually connect in the "mobile networks" section of the "wireless & networks" settings page.
It seems to have fixed itself now, and I think it's because I've since ticked the option to "enable always-on mobile data", which I had turned off to save battery. Give it a try.
Click to expand...
Click to collapse
Thanks yurikg, but on my phone the "enable always-on mobile data" option is checked, anche there is no mobile network connection problem coming back from a Wifi connection.
The problem I shown is probably caused coming back from Airplane mode.

The other possibility is Juicedefender which apparently is known to cause problems recovering a mobile data connection (recent update may have fixed this):
http://forum.xda-developers.com/showthread.php?t=660706&highlight=juicedefender

yurikg said:
The other possibility is Juicedefender which apparently is known to cause problems recovering a mobile data connection (recent update may have fixed this):
http://forum.xda-developers.com/showthread.php?t=660706&highlight=juicedefender
Click to expand...
Click to collapse
I've not juicedefender on my Desire...
I've in plan to do some other tests...

I have a problem with my Desire reconnecting to a mobile data connection too, but not when I come out of 'plane mode, its when I leave a Wifi covered area. It could be the same problem, triggered by anything that disables and then reactivates the data connection?
I have no solution yet, and I have contacted HTC support about it (still no reply). There is some discussion here:
http://forum.xda-developers.com/showthread.php?t=656192

I seem to be having this problem too when coming off WiFi connection, unfortunately restarting the phone has not righted the issue...

I'm also having this problem with the connections. Fine on the wifi at work and at home but not switching over to the mobile network. Apart from that the phone seems awesome! Soooooo much better and more fun than the HD2.

OK, my phone appears to have no network connection whatsoever in fact...

Have the same problem as well. Coming from Wifi and to mobile network only - I do not get any data coverage. This is for the Desire and I had the same problem with Legend.
I hope this will be worked out ASAP.

Well, my problems all sorted. Turns out I had to manually input the APN for internet, took me by surprise since no phone I've owned since 2006 has needed that...

Just had to put in the settings manually too. Seems there is an issue with some of them. Would put a link here but as i'm a newbie not allowed Just google vodafone apn settings for htc desire and hey presto

Same problem here, my Hero had it too. I found it did work when you switch to gsm only and back to 3g/gsm... Would love to hear good solutions.

Im also having the same problem.
If i try switching my connection from wifi to mobile data, my mobile data connection fails to work. A power cycle fixes the issue but if i try switching connections again, the problem returns.

Can I suggest to anyone still having problems getting their phone to switch to mobile data when leaving Wifi to view the following bug report on Google Code and to star it to help raise the priority with Google:
http://code.google.com/p/android/issues/detail?id=2207&colspec=ID Type Status Owner Summary Stars
Thanks folks

[SOLVED] 4g/3g randomly disconnecting and reconnecting

I know there are a lot of posts about internet connection problems, but I couldn't find anything exactly like my issue.
If I only have 3g on, my Evo will connect and stay connected for a few minutes, then it will disconnect for about 20 seconds, and reconnect agaoin for another few minutes... and the cycle continues.
If I turn 4g on and 3g off, the same thing happens with the 4g.
If I have 3g and 4g on, the same things happens except sometimes 3g will be the one to connect and sometimes 4g.
Wifi works great.
My Evo is brand new and recently rooted, running Myn's Rom RLS4.
anyone had similar situation or resolutions?
THnkas!

there are only pockets of 4G so far. dont expect there to be 4G around like 3G is. as it is, 3G still isnt dat big/nation wide, but 4G is like rare. its like a needle in a haystack. the needle is 4G surrounded by the Hay/3G

Thanks,
the thing though is that my wife's unrooted Evo always maintains a strong 4g connection.
It wouldn't bother me too much the same thing happens when I use 3g. it reconnects every 5 minutes or so. Maybe rooting it caused damage?

Could flashing a different radio or wimax help?
Sent from my Evo using XDA App

Don't flash radios... that is all

For anyone with similar problem, I found my answer here and fixed my connectivity issueshttp://forum.xda-developers.com/archive/index.php/t-704845.html.
clubtech said:
I don't think it has anything to do with the ROM.
If when you are connected to 4G you can access the internet, only suddenly 4G it drops for no reason and switch to 3G and then reconnects to 4G and goes on and on, below is the solution. if when you are connected to 4G you can not access the internet at all, the below wont fix it for you and it is probably a problem with your rom.
You will need your msl code to fix this, loop up in the forums to to obtain your msl code from Sprint:
hit ##DATA# > Edit mode.
Put in your msl code
Chose WIMAX
Scroll down to Wimax_Idle_Sleep
Change the value from 10 to 300.
Click menu, commit changes and restart the phone.
This fixed it for me and i never drop 4g (when in good coverage) again.
Basically Sprint has some STUPID setting that tells 4g to go into "sleep mode" of no data is passed on the 4g connection after 10 seconds which is essentially disconnecting 4g.
The problem is it goes into sleep mode (disconnecting), but then rescans and look for a 4G signal > reconnects to 4g and if no data will be passed in 10sec it will do the same again in an endless loop.
10sec to put a connection into sleep mode is really low so change it to 300sec.
The odd thing is that this is only happening in certain locations and with certain towers.
I tried to call Sprint and explain about this issue but my attempts fell on death ears.
Go ahead and try the above. if it helps you please someone make this a sticky as you are not the first i see having the issue.
Click to expand...
Click to collapse
You'll need your msl number to do this. SImply download msl reader from the market.

Can you change any of the other settings that would make it work better?
Scan attempt
Scan retry
Thanks for this info, I gave it a try but I still cannot connect without doing a profile update and or PRL update.
Todd
chasehearn said:
For anyone with similar problem, I found my answer here and fixed my connectivity issueshttp://forum.xda-developers.com/archive/index.php/t-704845.html.
You'll need your msl number to do this. SImply download msl reader from the market.
Click to expand...
Click to collapse

[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.

Preferred Network Mode Not Sticking: Let's Solve This Once and For All

So I'm on a CyanogenMod 10 nightly, and I am having the problem of the Preferred Network Mode setting not sticking, like several other users apparently, and after searching the forum I have concluded that there is no actual solution yet. Right now I can get to 4G LTE by manually setting to LTE/GSM/WCDMA in the Preferred settings, but it always reverts back after reboot. Apparently this does not happen to everybody; how should I fix this?
I posted in the CM Nightlies thread but no one seemed to notice. I hope this can get to the devs so they can fix this eventually I guess.
The following may be of use
http://code.google.com/p/cm9-msm8960/issues/detail?id=39
According to that, this is a hard-coded problem caused by the settings in the two places not matching?

Try going to your dialer and typing *#*#4636#*#*
Use that dialog to set it to what you want and hopefully it will stick then?
I never encountered this problem myself because I never want my phone on LTE as the battery life is pitiful as is and LTE only makes it worse.
Mine is set to WCDMA only on quattrimus cm10 and it sticks no problem.
Sent from my Nexus 7 using XDA Premium HD app

same here
iarejohnsmith said:
So I'm on a CyanogenMod 10 nightly, and I am having the problem of the Preferred Network Mode setting not sticking, like several other users apparently, and after searching the forum I have concluded that there is no actual solution yet. Right now I can get to 4G LTE by manually setting to LTE/GSM/WCDMA in the Preferred settings, but it always reverts back after reboot. Apparently this does not happen to everybody; how should I fix this?
I posted in the CM Nightlies thread but no one seemed to notice. I hope this can get to the devs so they can fix this eventually I guess.
Click to expand...
Click to collapse
Had the same problem, except that it dropped data service every 10 mins or so. Didn't even had to reboot. I could fix that by changing the network settings from lte/wcdma to gsm/wcdma. Another thing I witnessed when on lte that it would recover data connection when the process was restarted e.g. when activating and deactivating airplane mode.

Unlike most people, I'm actually wanting to keep it on LTE only, since I just keep data off until I need it, and when I need it I want full speed.
The phone always reverts back to GSM/WCDMA, turning off LTE.
I messed around in *#*#4636#*#* but it didn't really do anything.

I've been having the same problem on my Razer Phone 2. I don't think this is specific to the phone itself, but. I'm getting desperate for a solution. I change the preferred network type in the *#*#4636#*#* menu, I get LTE fine..... As long as I don't restart the phone or go on/off with airplane mode. Then I have to do it all over again. Does anyone know how to make this stick?