[Q] Sporadic Loss of Network - Galaxy Note II Q&A, Help & Troubleshooting

My Note II (Sprint PCS) has problems regaining network contact when it has been in a "dead zone". It will display the "no service" icon even when I know I'm in a area where I should have a voice and / or data connection. If I reboot the phone, I will regain service until I drive out of service range. Then, it will once again display the "no service" icon until I reboot the phone again. This only seems to happen in areas where there is a weak signal, like across much of Wyoming on Interstate 80, for example. Another thing this phone does that I find odd, is that it will occasionally display the "no service" icon, but yet at the same time indicate I have a 3G connection and actually allow data transfer. I've never before been a situation where I had 3G data capability but no voice service. I've thought about rooting the phone to see if it fixes the issue, but I travel for a living and cannot risk having a phone that is not dependable.

Related

Connecting to other signals?

Hi,
Tomorrow I'm going out of town for two weeks to florida, and ive checked the coverage map for tmobile, and it says there's no signal for tmobile where i'm going. How would I be able to connect to att's signal, or is that even possible? Thanks if You guys can help!
Ask your operator (-T-mobile) if he has roaming agreements with another operator in the area you will be. If so then the device will hook to the network there automatically. You will notice a new symbol on the status line at the top looking like a triangle - indicating that you are in a "foreign" network.
Mind that tarrifs are much higher if you are hooked to a "foreign" network. Usually also terminating calls cost you then.
I'm in the area now, and there's absolutely no signal whatsoever. Apparently there is roaming agreements here. My zip code where I'm at right now is 32346 (Panacea, FL). In network seletion it shows that AT&T is available as a network to select, but when I select it, it says "Cannot save settings, verify that You have network coverage or if the settings are available" Or simply, "No cell availabe''. Whats upi with this?
You say there is no signal but you can select a network?
I suspect that the default network for (T-Mobile) does not deliver a signal - which seems obvious as they do not supply coverage where you are.
When you go to select another network it usually shows you the available networks which HAVE a signal - otherwise they are not listed. You can however not tell how good the signal is (I suspect the best are listed at the top) and if you are at the edge your login may fail due to this.
I suggest you set the network selection to "automatic" and keep the device with you when you move around. It should login the network once the signal is strong enough. Be patient though - the retry to login is done in a minutes interval range to save battery. To check the network signal strength you could find people that have a phone and are logged in the AT&T network. Or go to an AT&T shop and ask there.
it doesn't matter which network your phone picks up here in florida, unless you have it unlocked and with an att simcard it won't matter, is not like when I went up north to canada with my dash, that even though it was roaming it picked up rogers , I live in a weak area for tmobile, I had to go outside my house when I had my dash , 'cause it wouldn't get a signal indoors, and it would show att indoors on my phone but it would never let me do anything , calls, text, or anything, I would have to go outside and let it find tmobile before I would be able to use it.

[Q] 4G Connects but "Service Not Available" ??

My home is well within the Sprint 4G coverage area shown on the coverage maps. When I turn on 4G (from the Settings screen) it connects to the "Sprint Network" and obtains an IP address (Signal strength = Good).
BUT:
None of the applications which require network access (browser, Market, email, YouTube, etc) can connect. They'll open up, but they can't access the network. If I uncheck Mobile networks in Settings > Wireless & Networks and then re-check it again, it reports "Service unavailable" despite the fact that the 4G Settings screen still reports Connected to Spring with "Good" signal strength and I still have an IP Address.
I should add that the phone has been doing this since I got the phone in November, but I figured it was due to the "unofficial/testing" status of the 4G coverage. I also installed the new 3.70.651.1 update hoping that it would fix the problem, but it had no effect.
After telephone support ran out of things to try they issued a Ticket # and sent me to a Sprint repair location this morning. That location couldn't test the phone on 4G because the store isn't in a 4G coverage area so they just replaced it with a brand new one (not a referb). So I get it home and try it on 4G before I make a single configuration change and the new phone does exactly the same thing as the old one: Good 4G connection but no service.
Has anyone else experienced this problem? Did you find an answer for it?
Thanks!
Pete
Note: All apps seem to work fine when I'm connected to 3G.
Additional info:
For the record, switching back to 3G after trying 4G results in the battery dropping like a stone. aLogcat reveals a flood of those damned <DC Connect> failures going on in the background. Thankfully, powering the phone off and on clears the problem until I try 4G again.
Two things of note:
It doesn't matter whether I use the 4G widget or the Wireless & networks screen.
Removing the 4G widget has no effect.
Pete

Why data connection lost and why reboot fixed it?

Hi,
Using GNex, stock JB 4.11, Wind Mobile Canada, $40 plan, unlimited data & Canada wide.
Please excuse in advance for the novice questions. I am not yet familiar with Wind Mobile. The customer support is too long and submitting a question to their website required around 5 days to get an answer which is generally irrelevant in my short experience. Hope some expert users here can share some of your knowledge.
Last week, suddenly during a phone conversation, the phone became totally disconnected voice & data. The next morning, the situation didn't improve, so I rebooted the phone (power off / on). Then the phone could connect to voice, but no data (gray icon instead of blue). I stayed with no data for 3 days. During that time, I tried a few reboots, changing various network settings (APN, Network Operators, Data roaming, etc.). None of that worked, then I made another reboot and suddenly everything is back to normal (no roaming and data OK).
Q1. Signal strength variation: what is the cause that makes a signal vary? For the same location, sometimes signal changes from 3 bars to 1 within a few minutes.
Q2. What caused a network to black out temporarily? That's what I got last week during the entire night. The reception icon is a black outline triangle (no voice, no data). I purposely disabled roaming, I admit a network could have some issues, but I have hard time to admit that a disruption could last 12 hours. May be the issue is my phone? It was not rebooted since 7 days.
Q3. How often should I reboot the phone? By reboot, I mean power off/on. I hope this is the correct term. Is it possible that a frequent reboot help the phone to be more responsive? I tend to think so because all the network issues I got were magically fixed by reboot.
Q4. Why would a reboot fix a data connection issue? In my case, a few reboots on day 1 didn't fix. Many network settings changes didn't reconnect data. Then finally another reboot on day 3 fixed data connection.
Thanks in advance for any help.
Welcome to the Nexus and its crap radio. Try turning off 4G, once I did that I never lost signal again. With 4G on I get disconnected from the network randomly throughout the day
SirVilhelm said:
Welcome to the Nexus and its crap radio. Try turning off 4G, once I did that I never lost signal again. With 4G on I get disconnected from the network randomly throughout the day
Click to expand...
Click to collapse
How to turn off 4G? Wind Mobile operates on AWS network 1700/2100 MHz (UMTS band 4), and HSPA+ for data. I believe it is not 4G. On the phone Network Settings, there is only an option "Use only 2G Network" which is not a good option for me. If I enabled "Use only 2G Network" the phone shuts off data and changes to roaming mode.
just set ur nexus on airplane mode for a second..
then disable the airplane mode instantly..
u ll gain ur net working widout reboot... )
dinglic mass
ronakmachhi said:
just set ur nexus on airplane mode for a second..
then disable the airplane mode instantly..
u ll gain ur net working widout reboot... )
Click to expand...
Click to collapse
Oh wow, that's a cool tips.
I hope someone can answers my other questions, I like to understand the "how things works" side.
2LoT said:
Q1. Signal strength variation: what is the cause that makes a signal vary? For the same location, sometimes signal changes from 3 bars to 1 within a few minutes.
Any number of influences. A microwave, air ionization, temperature, humidity, output from the tower not consistant, and plus just the variations of the phone. Going by bars is a bad way to gauge anyways, it could have only dropped signal for a split second but it doesnt update the bars frequently so it would appear to be low signal longer than it could have actually been. Your phone works by line of sight, picture a tight wire from your phone to the tower, anything that crosses in that line reduces signal.
Q2. What caused a network to black out temporarily? That's what I got last week during the entire night. The reception icon is a black outline triangle (no voice, no data). I purposely disabled roaming, I admit a network could have some issues, but I have hard time to admit that a disruption could last 12 hours. May be the issue is my phone? It was not rebooted since 7 days.
That actually is hard to answer, you would need to contact your provider to see if they have a log of an outage at that time before going into whether it was the phone or not.
Q3. How often should I reboot the phone? By reboot, I mean power off/on. I hope this is the correct term. Is it possible that a frequent reboot help the phone to be more responsive? I tend to think so because all the network issues I got were magically fixed by reboot.
Never unless things act funny. A reboot is usually healthy for operating systems (i know many do not). I personally don't intentionally reboot mine, it usually happens because I'm screwing with clock speeds
Q4. Why would a reboot fix a data connection issue? In my case, a few reboots on day 1 didn't fix. Many network settings changes didn't reconnect data. Then finally another reboot on day 3 fixed data connection.
Like any software there are chance of a 'glitch' where the modem and the driver have issues communicating. Toggling airplane mode off and then back on re-initializes this and in most cases fixes the communication problem. Rebooting will have the same effect. I would only worry if you are needing to do this often.
Click to expand...
Click to collapse
Hope this helps a little.
I would also contact your provider. They may have an issue with the tower you are connecting to.
Perfectly understood, appreciated very much your detailed answers. Can you please clarify below?
Darunion said:
Any number of influences. A microwave, air ionization, temperature, humidity, output from the tower not consistant, and plus just the variations of the phone. Going by bars is a bad way to gauge anyways, it could have only dropped signal for a split second but it doesnt update the bars frequently so it would appear to be low signal longer than it could have actually been. Your phone works by line of sight, picture a tight wire from your phone to the tower, anything that crosses in that line reduces signal.
Click to expand...
Click to collapse
Makes sense. Indeed, when I said "For the same location, sometimes signal changes from 3 bars to 1 within a few minutes". Actually, I mean a room and I was walking/moving so may be the orientation of the phone explained why the reception was inconstant.
Regarding your answer above output from the tower not consistant. Is it possible that the tower reduces its signal strength when the number of users increases? Similar to users sharing a finite band width?
Yes, even orientation of the phone can have an affect, depends how the antenna is set up inside the phone, i havent seen it so i have no answer for that.
ya, as you move around you could have been what blocked the direct sight of the tower, signal passes through nonmetal objects but each time it does, it loses strength depending what it passes through
@OP I also have the same problem, I am also with Wind and had to do force reboot to make it reboot.
Sent from my Galaxy Nexus using xda app-developers app
Flash the UGLC1 radio to your nexus. I'm with Wind as well and that radio gets me good service!

the problem of the reach of 3G,WCDMA,GSM ok

For me, a similar problem
Setting the network mode to auto or just wdcma makes the phone unusable.
Although the extent of the phone grabs. Nay, sometimes even 5 bars but the state does not tra large than 5 (sometimes 10) minutes and reach lost. Often with good coverage, I can not make calls and the internet does not work. Redials the phone ends in the subscriber information out of reach (the phone shows that he has range)
Switching the phone on GSM ONLY mode causes that everything starts to work as it should (only the net so slow)
The problem started a week ago
The problem occurs in various parts of the city, regardless of whether I use the transmitter Play network or roaming.
Factory reset did not help. I suspect the SIM card but the more I'm bending your point defect (eg antenna) since the last few months everything worked
EDIT:
1h watched by telephone yesterday, and what I noticed.
The problem is when a weak signal mode UMTS.
The signal strength of -90,-95dBm causes the phone to have problems. If the signal is below-100dBm the phone is able to maintain a dial-up connection to the Internet are no longer problems. Often there are also decreases above 100dBm signal which usually end up losing the connection of both GSM as well as internet and phone needs a few dozen seconds to reconnect.
If you set the mode to GSM only signal strength is-55dBm and the problems do not occur.
piotrpg said:
For me, a similar problem
Setting the network mode to auto or just wdcma makes the phone unusable.
Although the extent of the phone grabs. Nay, sometimes even 5 bars but the state does not tra large than 5 (sometimes 10) minutes and reach lost. Often with good coverage, I can not make calls and the internet does not work. Redials the phone ends in the subscriber information out of reach (the phone shows that he has range)
Switching the phone on GSM ONLY mode causes that everything starts to work as it should (only the net so slow)
The problem started a week ago
The problem occurs in various parts of the city, regardless of whether I use the transmitter Play network or roaming.
Factory reset did not help. I suspect the SIM card but the more I'm bending your point defect (eg antenna) since the last few months everything worked
EDIT:
1h watched by telephone yesterday, and what I noticed.
The problem is when a weak signal mode UMTS.
The signal strength of -90,-95dBm causes the phone to have problems. If the signal is below-100dBm the phone is able to maintain a dial-up connection to the Internet are no longer problems. Often there are also decreases above 100dBm signal which usually end up losing the connection of both GSM as well as internet and phone needs a few dozen seconds to reconnect.
If you set the mode to GSM only signal strength is-55dBm and the problems do not occur.
Click to expand...
Click to collapse
it's your network providers problem not our's. you can obviously not get 3G all around your city

service lost every so often

hey all,
I have att on my fire phone , and every now then(atleast once a day) I lose service. It would say searching on the signal bar and it never finds it lol. I would have to restart the phone and then it reverts back to normal. is anyone else having this issue?
I'm guessing it's the fact that LTE has lower signal quality than 3G and
once you force the phone to 3G (once per reboot) it will never disconnect.
LTE is used only for data, when you make calls it will switch to 3G anyways,
so call your phone while it's in LTE and you should notice signal improve ...
To switch do this:
Same as dialing *#*#4636#*#* but this is easier to use:
play.google.com /store/apps/details?id=diewland.testing.phone
Go under Phone Info, then select 3G auto I believe, 4th down from top.
Also, contact Amazon support (right from help on your phone) if the above fixes it.
Tell them you want settings for disabling LTE added to the phone,- I did that and they
said they've submitted to developers, but I guess it's best if more people request this ...

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