Develop Bugs

[Q] Very weak Wi-Fi signal

After searching for a solution for a while, I was not able to find one. Apparently I am not the only one with this problem.
I used to have signal in the entire street with this phone, and as long as I was inside the building, the signal was "excellent".
After an update came out, the Wi-Fi signal has dropped significantly.
Now I should be happy if it connects when only a few meters away from the Wireless-N router!
All other devices in this network, including an HTC Sensation, have no problems with the signal at all.
I have contacted HTC and they were "looking into this matter". But it has been a while since this problem appeared, and I am afraid there is not going to be any fix by them.
So I decided to root my phone yesterday, using this guide and I am currently using Android Revolution HD together with the RADIO provided in that thread.
Now it seems to have a slightly better signal, however there are no white bars shown on the Wi-Fi icon, while it states that the signal is "excellent" at the Wi-Fi search screen. The connection also still drops frequently.
I am definitely satisfied with the results, but I do need this Wi-Fi problem fixed.
Is anyone here familiar with this problem, and is there anything to be done about this?

This was a problem with Lees kernel. Good signal, just not being displayed correctly.
Turn WiFi off/on, and it should work.
Sent from my Desire HD using Tapatalk

That is the very first thing I tried and it did not help.

Did you wiped all data before flashing with the tool provided in ARHD-thread?

Yes, I did.

napok said:
After searching for a solution for a while, I was not able to find one. Apparently I am not the only one with this problem.
I used to have signal in the entire street with this phone, and as long as I was inside the building, the signal was "excellent".
After an update came out, the Wi-Fi signal has dropped significantly.
Now I should be happy if it connects when only a few meters away from the Wireless-N router!
All other devices in this network, including an HTC Sensation, have no problems with the signal at all.
I have contacted HTC and they were "looking into this matter". But it has been a while since this problem appeared, and I am afraid there is not going to be any fix by them.
So I decided to root my phone yesterday, using this guide and I am currently using Android Revolution HD together with the RADIO provided in that thread.
Now it seems to have a slightly better signal, however there are no white bars shown on the Wi-Fi icon, while it states that the signal is "excellent" at the Wi-Fi search screen. The connection also still drops frequently.
I am definitely satisfied with the results, but I do need this Wi-Fi problem fixed.
Is anyone here familiar with this problem, and is there anything to be done about this?
Click to expand...
Click to collapse
First Backup your current ROM. Try to find RIL matching your RADIO. it might help you
Have a look at this thread.
http://forum.xda-developers.com/showthread.php?t=1040986

I am already using the RADIO provided in the Revolution thread.

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

Missed calls, delayed voice mail.

Ive had my note 2 now for about a month now and the phone itself has been great. During the first week I experienced horrible signal but that has all stopped recently. I now get 4g everywhere I go around my home and work.
But.. one problem persists. Missing missed call notifications and delayed voice mails. This has been going on since I got the phone and I though it was only a wifi calling bug until today.
Multiple people have called me and left a voice mail which I will only receive once I use my phone. Ie: text/make a call. No missed call notification shows up but I will receive texts and voicemails once I actively use my phone.
I have done tests with wifi calling where my phone would be charging for a few hours and a call would go straight to voicemail. Also pinging my phone yields a 1k+ms ping response and then normal 50ms which leads me to beleive the phone goes into some sort of sleep state and has to be actively on the network to receive any call or text. I thought it was just wifi calling but now its happening without being connected to wifi.
Does anyone have any information on this type of problem?
Sent from my SGH-T889 using xda app-developers app

I had the issues you described with wifi calling. It was so unreliable that I stopped using it. On the regular cell connection I no longer miss calls.

I wish using regular cell was reliable as the coverage is great in my area. But after yesterday's problem I can't trust it anymore.
I'm back to using wifi calling and im using an app called wake lock to keep the wifi connected, as the normal no sleep when wifi setting doesn't work in the settings.
It has been 12 hours and the wifi calling icon hasn't disappeared. I've received emails and texts as well. Hopefully this can be a permanent at home solution. I wonder what causes the cell network to just drop and stay unconnected while the phones on lock though.
Sent from my SGH-T889 using xda app-developers app

hellfirex11 said:
I wish using regular cell was reliable as the coverage is great in my area. But after yesterday's problem I can't trust it anymore.
I'm back to using wifi calling and im using an app called wake lock to keep the wifi connected, as the normal no sleep when wifi setting doesn't work in the settings.
It has been 12 hours and the wifi calling icon hasn't disappeared. I've received emails and texts as well. Hopefully this can be a permanent at home solution. I wonder what causes the cell network to just drop and stay unconnected while the phones on lock though.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
Are you using ant task killers or battery saving apps? They can turn off your data and so many other processes, they do more harm than good.
Sent from my SAMSUNG-SGH-T889 using xda premium

I have no battery saving apps, all i use is the stock task manager for ending tasks.
UPDATE:
WiFi calling with wake lock seemed to work most of the day. I received many texts and calls from at least 5 different people over the coarse of the day. But then... I go in my garage and lose wifi signal and the phone doesn't connect to a tower and i miss someone trying to call me. Same deal.. no missed call notification and they said it just goes straight to VM without ringing. I write it off as not a big deal as long as the rest of my house wifi calling allows me to miss nothing.
I sleep for a few hours and i wake up and hit my lock screen. The screen flashes on and it shows the WiFi calling symbol.. then lags and flashes to it being gone. I then use my house phone to call it and of course.. no ringing.. straight to VM. I have also received no emails/texts during this time.
I open the battery usage and during the last 15 hours or so there are small increments of signal loss. The whole bar is yellow which isnt great but should still work. But there are small slivers missing completely, and they are identical to the WiFi usage as well. Both show the same 0 signal at the same time.
I'm at my wits end with this problem.. i have tried just about everything from factory reset, SIM reset, using WiFi calling on both my router bands, using settings to keep WiFi on when phones charging. The problem persists on 4g and WIFI. Currently I'm set to GSM only to test this issue using EDGE.
The odd thing is my brother has the same phone and although he reported a few missed calls via wifi calling, nothing as serious as my issue of several blocks of time with 0 signal at all.
I noticed the new update rolling out changes the baseband.. would this do anything to fix any issues with connectivity? Ive read numerous people with this issue using various phones/carriers and the only fix seemed to be getting a new phone number. I hope this isn't the case.

I think you might need a microcell

I'm not sure if that would really help. Like I said I have above average coverage at my house. I never had a problem with my vibrant and the other 2 lines dont have problems. This morning I flashed jedi x7 and I now have a 3g and a H+ icon. I notice that im 95% on 3g and it sporadically switches to H+ randomly for only a few seconds. Also as about 6 hours have past, my network signal in battery usage is a solid bar with no signal loss. Time will tell if that stays true.
One other thing of note, if I perform a speed test when it's on 3g.. I ping 1k+ but pull around 15mbit. When H+ is up before I start the test I ping under 100 and pull 15mbit. Perhaps the constant switching is causing me to disconnect from the tower for brief moments.
Sent from my SGH-T889 using xda app-developers app

Network loss

Ok guys, having a real problem here. Often when I am connected to either 3g or wifi my phone will stop picking up signal suddenly. AIt's almost every time and I will have to disconnect from the network manually and reconnect and it will instantly pick up signal again for a while then it'll repeat. When it suddenly stops it doesn't show on the status bar that I have lost any signal. With 3g its kinda just at a stand still not receiving or uploading and with wifi it just stays the same but I'm still not picking up a signal because by web pages won't load neither will other apps that require network load until I manully disconnect and reconnect. Is anyone else having a problem like this? I don't think it was like this when I firs got my phone a month ago. I'm at a loss. Any help is much appreciated. Oh I'm completely stock btw haven't rooted........(yet) lol

microdave said:
Ok guys, having a real problem here. Often when I am connected to either 3g or wifi my phone will stop picking up signal suddenly. AIt's almost every time and I will have to disconnect from the network manually and reconnect and it will instantly pick up signal again for a while then it'll repeat. When it suddenly stops it doesn't show on the status bar that I have lost any signal. With 3g its kinda just at a stand still not receiving or uploading and with wifi it just stays the same but I'm still not picking up a signal because by web pages won't load neither will other apps that require network load until I manully disconnect and reconnect. Is anyone else having a problem like this? I don't think it was like this when I firs got my phone a month ago. I'm at a loss. Any help is much appreciated. Oh I'm completely stock btw haven't rooted........(yet) lol
Click to expand...
Click to collapse
It has happened to me a couple times that I have noticed. I will be streaming music and walking and all of a sudden, nothing.
Even a soft reboot does not help. It will require a full reboot generally to solve the issue. I have not been able to identify the issue specifically. I suspect it might be related to LTE testing in my area.
What's the LTE status in your area?

No lte yet but as I stated earlier it happens on wifi too. It'll still show that the signal is connected but my pages want load at all after it happens and when I try to refresh it'll say that the webpage could not load because there is no network. Only until I manually shut off 3g or wifi in the settings and turn it back on will it pick up signal again but only for about 5 minutes. This has happened in various locations on 3g and wifi and will even happen at home wifi.
Sent from my SPH-L900 using Tapatalk 2

This has happened to me as well... A lot . Stock.. on various roms.. No lte as well.. But it's in the works
-TeaM VeNuM Like A Boss
-Galaxy Note II Edition

I've had this problem too. Sprint replaced my phone and it never happened again.

I think reactivating hands free actually fixed my problem...for now anyway. It's not losing network like it was before. All I did was enter on the phone dial pad ##72786# that'll reactivate. Hope this helps