Questions tagged [signal]
This tag deals with reception issues, which can apply to a variety of radio signals such as cell radio, WiFi, and others.
73
questions
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16 views
Signal does not allow sharing to other apps
In my installation of the Signal messenger, I can share images and videos to other apps, like email apps and the like. However my wife cannot, the option in the "three dot menu" just does ...
1
vote
0answers
142 views
Can an app manipulate the cellular radio chip?
I have a few ideas for a couple local cell to cell apps, but want to use the radio signals to extend the range (the extra work is fine with me).
Just curious if it is possible to control the ...
1
vote
0answers
47 views
mobile radio tower is off
typing *#*#4636#*#* on my mi max3 xiaomi will take me to my phone setting and I after turning mobile radio tower ON it urns back to OFF again after a few moments.
I am not able to place any calls as ...
0
votes
1answer
32 views
Nexus 5 signal drops immediately when making call
My Nexus 5 running on Marshmallow and it has Last ota security update provided by Google at the time of end of support.
I’ve a perfectly working SIM card. Using this sim card to make calls from nexus ...
0
votes
0answers
44 views
How to solve Signal Cellular off error?
My android 9 phone acting slowly yesterday, so I restarted it. Then its cellular signal icon on top get crossed from left to right. I googled it and that is a "Signal Cellular off" icon. Now my phone ...
1
vote
0answers
19 views
Recover a phone number a dialed with no signal [duplicate]
At the bar last night I got a number from an amazing girl that I dialed in the bar. I had no signal when I dialed the number (the bar was deep underground) and I don't see the number in my call ...
0
votes
0answers
65 views
Will Samsung galaxy s10 works in my country?
You may know that samsung galaxy s10 have two different versions, one with Qualcomm chipset and one with Exynos chipset. From reviews in the youtube and sites like bgr and anandtech, I'm more biased ...
0
votes
1answer
358 views
Signal Private Messanger - Permissions?
RedPhone and TextSecure was migrated to Signal, but I'm a little bit worried about all the permissions Signal app requires. Why does signal require ex. location and calendar? I have tried to search ...
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votes
0answers
144 views
How can I increase my samsung galaxy s4 signal power
I'm having poor signal quality from service provider(the signal for recieving calls, messages etc.)
When I check from "about device" section, it usually says around -110 dbm and 2 asu.
I have no ...
0
votes
1answer
673 views
Bluetooth signal strength bug with my car's stereo
i have problem with xiaomi mi a1 and bluetooth radio of ford fiesta car.
I connected an Android phone to a vehicle via bluetooth to make/receive calls.
Connecting the device via bluetooth was ...
0
votes
0answers
143 views
Cannot change mobile network Sony Xperia V
I have a Xperia V device which worked fine until few days ago. I still use 3G SIM, and I've enabled WCDMA(preffered)/GSM from settings menu (Settings->More>Mobile Networks->Network Mode). This works ...
4
votes
1answer
798 views
Cannot Restore Data for Signal Messenger 4.16 with Titanium Backup
I have backed up and restored Signal with Titanium for years without any incident, up until now. The other day I was encountering a boot loop playing around with an Xposed module. I did a re-flash of ...
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vote
0answers
63 views
How to register/invite a communication partner in Signal on LineageOS?
I used Signal once on CyanogenMod and it didn't make me think during the registration. Now that I want to recreate a secure communication with my previous communication partner on LineageOS (OS ...
0
votes
0answers
27 views
What is this symbol on top of my service bar? [duplicate]
On my Galaxy s5
There's my Cell signal (2 bars), there's my Mobile Data (4G LTE).
But what is that strange symbol on top of the bars, I've never seen it before (I don't see it on my other phone or ...
1
vote
1answer
558 views
What information can you extract from Wifi networks without connecting?
Android newbie here.
I am not talking about eavesdropping wifi traffic, but accessing publicly broadcast information.
When you open the list of available wifi networks, that means Android is ...
0
votes
0answers
290 views
Sony Xperia Z3 - Lollipop - Signal bar disappeared, no SIM would work
I'm experiencing problems with my 2 yo Sony Xperia Z3. Today i've changed the SIM card from polish T-Mobile to Orange (I've been using Orange for alot of time, even this particular SIM, and 1 month ...
4
votes
1answer
3k views
0
votes
1answer
1k views
LG G2 - No SIM and network also after hard reset
I have a problem with my LG G2 (D802).
It shows, without reasons, no network signal and no SIM.
I do an hard reset but nothing changed.
What's the problem?
2
votes
0answers
2k views
Acceptable Signal Strength Ranges for 2G/3G and 4G
I have been logging signal strengths on my phone and am trying to understand what ranges can be considered "Good" and "Bad".
RSSI is a measure of signal strength for GSM (2G/3G): -50dBm to
-113dBm
...
4
votes
2answers
2k views
Does Titanium Backup backup the Signal private Key?
I am looking for a way to backup my private key for the Signal messenger application. Nothing has worked so far, and I am curious whether anyone can confirm or deny that Titanium backup will save and ...
3
votes
0answers
3k views
Cellular radio dead? No carrier signal, “No service”, no mobile networks
I own a Motorola Moto G 4G (XT1040). Original stock ROM, Android 5.1, unlocked bootloader, custom TeamWin recovery, rooted. I only install apps from Google Play, F-Droid or trusted sources.
Last ...
0
votes
1answer
33 views
Network disconnecting after returning from flight mode
Device: LG G4 with android 6.0
When I turn flight mode off, after a few seconds I get reconnected to my mobile carrier network. After a another few seconds though, the network disappears (showing '...
-1
votes
1answer
1k views
Auto refreshing the signal
When we go to the area where signal is not reachable, we experience "Emergency calls only" or "No service". But after coming-out from that area we sometime found phone is not receiving signal and ...
2
votes
0answers
37 views
Unique signal problem - No one heard of such problem
I am using honor 4x from past 1 year. From last week I am facing a unique issue.
SIM 2 signal is not working with Vodafone in some areas of the city (for example it will not work in my home). ...
-2
votes
1answer
122 views
How will I know the signal strength of my smartphone's 3g?
How will I determine the signal strength of my smartphone's 3G whether strong or weak?
1
vote
1answer
115 views
How do I troubleshoot inconsistent call quality?
I have a OnePlus One phone that has worked great for a long time, but for the past few months, my call quality has been inconsistent. I am on the newest stock rom - Cyanogen12.1.1-YOG7DAS2K1, build ...
1
vote
0answers
2k views
Mobile data can't connect (with exclamation mark) but wifi
My phone is Motorola XT1033 dual-SIM (Lollipop 5.1)
* have active mobile-data internet packages
* can connect and open provider's website (to check package status & quota)
* valid APN settings (...
1
vote
0answers
1k views
Lost 3G/4G signals, 2G works only; factory reset or downgrade or changes in network settings didn't help
I have a Samsung Galaxy S4 LTE working on Lollipop and I completely lost the 3G and 4G signals. I can only use the 2G signal.
When I choose in the network options (Only HSPA) there's a stop like ...
1
vote
2answers
7k views
How are good, fair, poor and bad defined for signal strength?
How are good, fair, poor and bad defined for signal strength in terms of dBm, in most Android phones or telecommunication community?
Are they defined the same for mobile network and for WiFi network?
...
2
votes
2answers
6k views
How to set signal strength threshold for switching WiFi on and off?
When the WiFi signal strength is low, the phone switches to a 4G
network.
When the WiFi signal strength is high, the phone switches to that WiFi
network.
This is normal behavior for any Android ...
2
votes
0answers
55 views
Galaxy S4 refuses to gain signal after being disconnected for a period of time
So, the scenario is this: I have a Verizon Galaxy S4 (SCH-I545, Android 5.0.1). One of my work sites is an amazingly effective dead zone. No signal whatsoever. If I enter the dead zone for a few ...
0
votes
1answer
42 views
What would happen if the kernel was somehow modified to avoid sending the shutdown signal?
I'm assuming a signal is sent when the battery reaches some critical level.
If that signal was programmed to be ignored somehow, what would me most likely to happen when the battery depleted its ...
0
votes
1answer
734 views
How to differentiate between a full signal icon and an empty signal icon on my Andriod Device?
My question is not a duplicate of this post as in that the OP is asking for the difference between the network icons for a rooted device whereas mine is for mobile signal icons in an un-rooted device....
1
vote
2answers
854 views
Can you restart data service with full strength & orange indicator?
With some regularity (6-7 times per month) my Android 4.4 phone gets into a data-wedged state where the connection is shown as full-strength LTE, but without connectivity (the icon is orange in the ...
1
vote
1answer
20k views
Can I increase signal strength on my Samsung Galaxy s4 active?
I recently purchased a used Samsung Galaxy S4 that used to be on AT&T, but it has been unlocked, or something so that I can now use it on Koodo (canadian carrier).
The signal is very weak. It's ...
0
votes
1answer
6k views
Convert signal strength to dbm
I've got this app which shows network signal strength as a positive integer value btw 5 and 35. Another app uses negative integers like -99dbm.
Is there a way to convert the positive values (unit ...
0
votes
1answer
1k views
Samsung Galaxy SHV-160k won't get signal
I bought on ebay a refurbish Galaxy Note N-7000. Once I received it I put my chip and for my surprise there was no signal. After checking It I noticed it has on the back of the phone N-7000 but when I ...
0
votes
1answer
709 views
On the verge of 3G reception — how to find the best position
In my apartment, it seems like I'm on the verge of having 3G reception with my current carrier. It's only if I place and leave my Galaxy Nexus on the window, and in a certain position and time of day,...
0
votes
1answer
257 views
Any way to reduce the frequency of searching for a signal
My fiancee just got my old SGS2 when I got my new N5. The problem that she's having is that there is no cell reception at her work. And because of this, her phone is constantly searching for a ...
2
votes
0answers
69 views
Can 2 smartphones malfunction if they are hold together in the pocket for long times everyday?
I apologize for my ignorance but I am not very tech savvy.
Basically I do a field job and I always have 2 phones in one of those bags you put around your waist.
I had 2 Samsung galaxy S2 in the ...
1
vote
1answer
2k views
GSM signal lost - howto get signal back without restarting
Several times a week I have the problems where the GSM signal is lost on my phone, due to bad coverage in that area. The real problem for me is that when that happens, and when I move to a place with ...
6
votes
3answers
2k views
Determine strength of the cell antenna in an Android phone to ensure good cell reception
In some parts of the world, the cell towers are few and far between. In places like these, when someone is shopping for their next smartphone upgrade, they need to consider cell reception.
Boosters ...
19
votes
2answers
37k views
What are the different signal indicators avalable on the notification bar?
The signal indicator on my phone often shows "3G" or "H+" in the signal indicator. When there's no connectivity it doesn't show anything.
I'm referring to the icons in the status bar like these:
...
2
votes
0answers
97 views
How does android (stock) calculate the number of bars representing mobile signal quality?
I am interested in how Android (assuming unmodified AOSP code) calculates the number of bars representing mobile signal quality?
Also, if you know the place in code where this is done, I would ...
6
votes
3answers
18k views
Where is the backup folder of TextSecure and Signal?
In TextSecure, you can choose to backup your SMS to the SDCard.
It says "Success" but there is no evidence where it does store it on the SDCard.
I cannot find it.
0
votes
1answer
2k views
No signal on custom roms (SGS2+)
I have a Samsung Galaxy S2 plus and rooted it via Odin and put CWM on it, with which I installed the unofficial Cyanogenmod ROM and later P.A.C.
Unfortunately I had massive issues with the signal: ...
7
votes
4answers
13k views
What causes my Android phone to heat on low signal
I have noticed that 3 of my Android phones heat on low signal (Nexus4, Xperia U, and HTC One) 40~50C. My friend has an iPhone and it doesn't seem to heat as much (30C).
So, why does this happen? Why ...
9
votes
4answers
1k views
Does GPS signal quality influence battery life?
Does bad/weak GPS signal affect battery life? For instance, when in the city downtown with lots of tall buildings or in the woods or mountains, will running GPS drain the battery faster?
3
votes
4answers
35k views
Why is device not showing the phone signal bars anymore?
It's been happening for a while now but I've just gotten around to posting this issue. I'm running Cyanogenmod 10.1 on my Galaxy Note 2 but one fine day, it stopped showing me the signal bars. I've ...
5
votes
1answer
115k views
Do signal booster apps work? How?
I do not have the best signal on my Galaxy S4. I have had a recommendation on downloading a Signal Booster App.
How do they work (or do they work at all)?
Are there ways to boost my signal strength ...
