Database Users

When I wake up my phone, it's connected to 3G, but I am on wifi.

Anyone else having this problem? I don't remember having this happen on my MT3G.
It's really eating up the battery.
I am on JI2, and I never experienced this until last night after using Odin.

you have to change the wifi sleep policy in the wifi settings. Got to settings, wireless networks, wifi, then press the menu button and select advanced.

OMG! thanks, you're a real life saver.

Sorry to bring up an old thread. I have it set to never sleep but it still does. Any ideas? Seems when the display times out, it switches off wifi.

I have wifi on all the time at home and it's set to never sleep. Sometimes I see both the wifi and 3G icons. I know my wifi signal is strong, so no idea why the phone sometimes also seems to need a 3G data connection. One example is when I test GPS at home the 3G icon will pop up briefly. Another is following a reboot. But I see other times as well, and sometimes it stays for quite a while, but eventually goes away. I wonder if perhaps some ports get blocked by my router and the phone uses 3G communication to get around it. Bit of a mystery, but I don't see any other negative symptoms.

Here is something I have experienced. This is regardless of what ROM I am on.. Stock, Bionix, whatever...
I have wifi turned on at work. Sometimes I would see wifi and 3g on at the same time.
Now today, while texting, I noticed that my Wifi connection dropped to nothing, and at that point my 3g kicked in, which I expect it to. But when my Wifi reception kicks back up again, my 3g didnt turn off. I turned off Wifi and turned it on again, and my 3g turned off.
Anyone else getting the same experience?

samnada/ELStiko, That's what I'm really seeing too as I thought my wifi was just going to sleep.

ljv said:
samnada/ELStiko, That's what I'm really seeing too as I thought my wifi was just going to sleep.
Click to expand...
Click to collapse
I'm pretty sure my wifi isn't going to sleep. The wifi icon is on all the time with at least 3 bars. My cell signal is definitely weaker in my location. So, if it's seeking the strongest signal my wifi will always win.
Besides the possibility that my router is blocking some ports the phone wants to use, there's also a possible security issue. I know at one point the TMO My Account app would force a switch to cell communication versus wifi and I believe it was due to security concerns. Maybe some apps do the same thing.
I just did a GPS test, got a lock, stopped the test, closed the app, and the 3G icon stayed up for a couple of minutes then went away. Just one example.
Does seem odd, but I've just assumed there's some rational explanation. Could also be a bug...

your lucky you wake up and you have 3g. i wake up my phone is always on edge. lol
Sent from my SGH-T959 using XDA App

GPRS/3G issue on Optimus 7

Well here's the thing. Around my house, my provider has excellent 3G coverage, but inside my house its not so good. I get full 5 bars of "H" at about 200 meters from my house but only 2-3 when inside my house. Its OK by me. The thing is that when i come home from outside the data coverage is H with 2-3 bars. If I am at home and turn off/on the 3G option on my phone it just goes to GPRS with full 5 bars signal and never on 3G/H. I would prefer the H than the GPRS. Is there any way to have it lock into H and not on GPRS? Maybe a registry tweak?
Thanks in advance.

I have had this issue for a while, and I still don't have any way to force it, but if you find a way I'd be interested.
The only trick I found is not to turn off the 3g but to hit "tap to select" on the Network Selection option, and then selecting my provider again.
In the states AT&T has two selections AT&T and AT&T DR. Not sure what DR stands for but usually toggling between the two will get by back to H. That or sometimes just powering off the device.

Kr3i0s said:
Hey guys found the solution to lock the wp7 to 3G/HSPA only network.
1. Press ##3282# and it will open the field test screen.
2. Select settings at the bottom of the screen.
3. Select 3G Network only option.
The phone will be locked to 3G networks only even if the signal is very low.
Tested on HTC 7 Pro. Working like a charm.
Hope it helps.
Click to expand...
Click to collapse
Worked for me. Select the HSDPA module at the bottom, press the 3 dots, settings, 3g only. Many thanks to Kr3i0s

tsabasid said:
Worked for me. Select the HSDPA module at the bottom, press the 3 dots, settings, 3g only. Many thanks to Kr3i0s
Click to expand...
Click to collapse
Thanks for the head's up, so far so good.

Eυχαριστούμε! Τhanks!

So.... Two minor issues with the work around.
Went to my friends house, an area I know I always have a bad connection. There was no 3g signal so it basically was stuck on no signal the whole day.
Also, went into battery save mode which auto-disables 3g, and it do go to 2g connection. When charging the battery back up it was still on 2g, had to toggle the cellular connection again to find 3g, but seems to be staying at 3g for now.

I'm having issues too
I'm also having issues in Italy, with Vodafone operator. I've posted a video to youtube that shows very well my problem. Please watch it and tell me if you have the same issue (endless switching between 3G and H having very unstable data communications). I'm thinkinh about returning back to repair for the second time...

While I can't read much of what you wrote, I can tell you for a fact that Battery Saver mode does that to my phone. ...
The fix posted above works, until battery saver kicks in, then all is lost.
Aside from that, I just know I'm in a bad area sometimes so it will switch, but for the most part I only have that issue when I turn on battery saver.

Etaduck said:
Also, went into battery save mode which auto-disables 3g, and it do go to 2g connection. When charging the battery back up it was still on 2g, had to toggle the cellular connection again to find 3g, but seems to be staying at 3g for now.
Click to expand...
Click to collapse
Is that actually supposed to happen? I haven't read anywhere that battery saver turns 3G off. That's not my case, at least.

In the video I had battery saver on, it's true. But the same happens normally even when battery saver is off.

aptcore said:
Is that actually supposed to happen? I haven't read anywhere that battery saver turns 3G off. That's not my case, at least.
Click to expand...
Click to collapse
You know, that was an option pre-mango in the battery saver menu.... I guess I haven't checked it in a while. That or I'm just losing my mind, which is entirly possible.
That said, I have found my setting that the earlier post randomly turns to "2g only" usually after battery saver is turned on, but it seems to be triggered at random. Not sure if there is a regedit that I can do to stop that, but for now I just go into the menu and change it.

Phone sometimes disconnects when using WIFI

hi, sometimes when i look at my phone, usually after being on wifi the phone shows no bars.
sometimes it comes back on in a min, i tried airplane mode but it wouldnt work. so i restarted it and worked fine.
not sure why it happens, does anyone else have this? could it be due to some Wifi calling setting? not sure why phone seems to just cut off.

anyone have any idea why this may be happening?
does it turn off radio for wifi calling somehow or? just random.

I have a similar issue, but not equal. Sometimes, when I try to connect to the network I always do (home), it simply doesn't work. Scanning - disconnected - scanning - disconnect. Only a phone reset fixes this.
Sheep ROM 2.0
AbyssNote Kernel 2.5

I had a similar issue a while ago and sent Mine back to the seller but the seller claimed neither they nor Samsung could find a problem with the phone. Thankfully The seller sent me a replacement which no longer gives me this problem so it may be the handset, though it could also be the setting/Conflicting app. Someone reported here his problem Was solved after adjusting a w ifi regulating app

i have a 3-day old gnote and i started noticing this problem after i have my phone rooted. the wifi icon stays on but there's no internet connection. turning the screen off and waking the phone after a minute solves the problem but its annoying to be losing connection when you're needing it. i'm on stock KKA.
Sent from my GT-N7000 using Tapatalk

pinoypower said:
i have a 3-day old gnote and i started noticing this problem after i have my phone rooted. the wifi icon stays on but there's no internet connection. turning the screen off and waking the phone after a minute solves the problem but its annoying to be losing connection when you're needing it. i'm on stock KKA.
Sent from my GT-N7000 using Tapatalk
Click to expand...
Click to collapse
Not a user error so need to contact Samsung-don't think is anyway

I have a somewhat similar problem. When I am using wifi for somewhat long time, I am unable to connect back to my 3g. Or if I was on 3g connection and I move out of coverage area for a little more than 10 minutes, I can't reconnect to 3g. Only 3g connection has this problem though, everything else works fine.
If I restart the phone, I can reconnect. Setting to airplane mode and resetting doesn't help. Neither does resetting the mobile network operators.

Yes, the problem seems to be software related since there is no actual problem with receiving 3g/phone.
yesterday i drove back 10 hrs and streamed music/radio the entire way with only a few tiny interruptions in reception.
but often still if i just take my phone out of my pocket, the "phone" part will be off and usually turn back on within 1-2 mins.
but this is quite annoying since sometimes il literally be waiting for 1-2 mins to place a call.
my phone is "not" rooted.

[Q] defy+ data network woes

i have a variation on the data network problems, not as annoying as reboots,
but getting close.
normally i am on GSM only, as my data needs are low and it extends
battery life. for hours, everything is dandy. then i notice that
the "G" icon and the signal bar are not blue anymore (stock theme)
but grey. 'settings' say i am still data "connected", but in fact
data connection is out (the operating system thinks there is
data connection, browsers and mail clients keep spinning and
trying until timeout).
turning on and off wifi makes the phone try to connect to the data
network again. sometimes this works, but more often that not, i have
to switch to 3G mode for this to work, and sometimes even that does
not help, and i have to go airplane mode to turn the radio on and off
completely. otherwise it just tries and tries and tries to reconnect,
draining the battery like crazy, and sometimes resulting in these
mysterious reboots others are experiencing as well.
is this the phone or a network problem? (tmobile in the netherlands)
i was on the same network, same SIM with an older LG android phone
and i dont recall having this problem, so i am a bit hesitant
to blame the network for every outage...
should i just send it back for repairs/replacement?
system version: 45.0.74.MB526.Retail.en.DE
baseband: EPU93_U_00.60.00

for a while i will keep the phone in 3G mode to see if the same
problem exists. as my mobile data needs are low, it would be
a shame if i cannot keep it in GSM mode because of this...

I had the same problem couple of months back but since I'm on msginger don't have that enjoying problem anymore.
Ohh and as far as remember it was only when the battery was on maximum save, now I'm using custom and it's fine
Sent from my MB525 using XDA Premium App

mikeman8484 said:
I had the same problem couple of months back but since I'm on msginger don't have that enjoying problem anymore.
Ohh and as far as remember it was only when the battery was on maximum save, now I'm using custom and it's fine
Click to expand...
Click to collapse
i am on custom saving mode. i think that the saving modes, where
the data connection is cut off after some inactivity, just flesh out
the problem more, as trying to connect back to the data network
happens more often then during normal use, when data connection
is kept alive all the time.
since i set the connection mode to 3G or better, i did not have the problem
but that was only a couple of hours ago. sometimes a day goes by
without manifesting itself...

I'm on 2G all the time. And the custom saving still got set up for cutting the data off but i don't seem to have that problem anymore i can check later on if it would still appear on max saving.
Sent from my MB525 using XDA Premium App

so after days, it seems like i cannot reproduce these problems
while on 3G. seems like 2G only for data is not 100% reliable
either because of the phone or the network itself, or both.
pitty.

i m having problems with network reception with the 7.2 CM rom on the defy+.tried the baseband switcher in this link but still little or no reception
http://forum.xda-developers.com/showthread.php?t=1203297

i have been on 3G last couple of days, and no data woes.
however i had a spontaneous reboot, so the reboot problem
is seemingly not only a 2G issue (if it is)..

Mobile Data will not enable!! (Dynamic Kat)

I need help this is driving me insane!
I've been running Dynamic Kat Rom for about 6 months or so now. Everything was working fine then all of a sudden a week or two ago I noticed my mobile data is not enabling at all.
I can only connect on Wifi and only receive SMS.
I've tried
- Messing will all the data/network settings
- Turning Mobile Data on and off -- no effect
- Toggling Airplane Mode on and off as suggested in some places
- Wiping everything but Data and reflashing latest ROM
- Reseating the SIM card
- several other things I forgot..
I do see the carrier information in the top left (AT&T) and I am getting signal bars.. but not indicator for 4G/LTE/etc
I've been messing with this for a week now and it's driving me insane.. I can't get a connection anywhere unless I'm on Wifi.
Anyone have any suggestions? I'm not super phone savvy, but willing to try any suggestions anyone may have.

Hmmm.. weird.
So I called AT&T and asked them about it.. figuring it could possibly be a carrier issue.
They told me to try things I had already done 100 times.. turn the phone off and on.. turn wifi off... etc.
I turned Wifi off... (which I had done 50,000 times before) and 4G popped up.
I guess they did something. So.. guess it's resolved.

Problem has returned.. same issue. I will have 4G signal for hours and then all of a sudden it will drop completely and I can't get a data signal no matter what I do.
I see AT&T in the corner and have signal bars, so I AM getting some kind of signal.. but no data connection whatsoever.
It seems completely random and intermittent.. I can have data signal for days with no issues then I will lose it for days.
Restarting the phone 5-20 times sometimes fixes it.. but that's about it. Anyone have any ideas what could be causing this?

Bad signal / carrier issue?
Call them and report a fault in your area?

I have called them multiple times, they will reset the signal.. sometimes it will come back right away, sometimes it wont.
And this happens regardless of where I am. I know for a fact where I am right now has a great signal strength. I get 4-5 bars on average. But this also happens at home as well about 20 miles away, which also has a good signal, or anywhere I go really it can happen. This isn't in the middle of nowhere either, it's smack in the middle of SoCal (LA/OC)
I'm beginning to think it may be a SIM card issue or a hardware issue with the phone. I'm going to try asking them to send me a new SIM card.
Another thing I will notice is when I have a working 4G LTE connection, and I'm on Wifi... it will sometimes CONSTANTLY switch back and forth between wifi and 4G like every 10 seconds, even when I have full signal strength on Wifi and 4G.

Disable Smart Network Switching in WiFi settings
it's nothing but a buggy headache, disabling might fix most of your problems, almost certainly the constant switching back and forth

Yeah forgot to mention I have disabled that. It's disabled now. It solves the constant switching back and forth (when I actually have a data connection), but that's kind of a separate issue as the losing data connection.