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.

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70
votes
1answer
321k views

What is *Cell standby* and how can I keep it from eating my battery?

Looking up my battery statistics, I almost always find Cell standby amongst the top consumers: I never thought that "idle" would use so much energy. I saw that other people encounter similar problems:...
25
votes
5answers
22k views

How to make android prefer mobile data when wifi signal is very weak

When I leave home or the office there is a ring around it where I simply have no connection at all. This is because the WLAN network from my router at home or the one at the office is detected, but ...
24
votes
2answers
30k views

Does 'poor' reception deplete the battery quicker?

In the area where I live I sometimes have trouble with reception. The Internet stops working for me or it takes time to load pages. The phone tries and tries to connect. It seems to me that when this ...
19
votes
2answers
36k 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: ...
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?
7
votes
4answers
12k 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 ...
6
votes
3answers
17k 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.
6
votes
2answers
1k views

Does Nexus S Wifi and GPS have issues?

So there I was, happily reading reviews about Google's/Samsumg Nexus S building my judgement whether to buy it or not after my Nexus 1 got stolen. Happily enough there were very few posts on issues ...
6
votes
1answer
6k views

Nexus 4 getting “No Service” until a reboot after losing signal

I've got a Nexus 4 running Android 4.2.1 on AT&T (via Straight Talk). I've noticed that sometimes at work (low signal area) instead of getting low bars (zero to two at my desk) I'll get "no ...
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 ...
5
votes
1answer
114k 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 ...
5
votes
3answers
4k views

Can I boost/improve reception on my Droid?

With a rooted phone and an app you can overclock or underclock your processor. Also, off Android, with some hacks you can boost power of a wifi router and wifi antenna. It seems to me that if you ...
5
votes
3answers
5k views

How can I automatically connect my phone to the stronger Wifi signal around it?

I have a Google Nexus 4 and have two wi-fi networks that I use in my home. Since they are in some range of one another my phone stays connected to the router that's farther away from the one I'm ...
5
votes
2answers
658 views

My Galaxy Nexus can't hold on to a signal

I have an unlocked international-version Galaxy Nexus on the German T-Mobile network. It's only about a week old, but more than once in that time I've seen the signal drop completely out, and won't ...
4
votes
2answers
290 views

Does Gingerbread use extra battery power to make calls when the phone has poor signal?

Since I got this phone (Galaxy S, originally on Eclair, then Froyo) and switched network provider, I've had major problems with the signal at home, and call quality as a result. Following the upgrade ...
3
votes
1answer
2k views

RSSI range for WiFi icons

What is stock RSSI range for the WiFi indicator icon in notification bar? Example ranges: 0 bars   -100 to -70 1 bar     -70 to -55 2 bars   -55  to -45 3 ...
3
votes
1answer
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
3answers
3k views

How to monitor signal strength?

I own a Samsung Nexus S 4G on Sprint, and I am having terrible but intermittent problems with my signal quality on my phone. I have reasonably high certainty that this is a hardware issue (my wife has ...
3
votes
2answers
190 views

Any tips for phone stability?

My Moto Droid has seen great performance improvements with each new Android version, and has been much more stable and reliable with each version release. Recently I was in a situation where the ...
3
votes
4answers
32k 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 ...
3
votes
2answers
2k views

Is there a way to switch between radio modes without the phone radio completely shutting down?

Is it possible to have the radio switch between WCDMA Preferred mode, GSM mode, and WCDMA only, for example, without the radio switching off and on again? The radio completely loses signal during the, ...
3
votes
1answer
529 views

No GPS reception on Asus Slider SL101

I am the owner of an ASUS SL101 tablet, runing Android 4.0 (ICS). Using the "GPS Test" app, I cannot get any GPS signals, even when standing outside for extended periods of time. I have a standalone ...
3
votes
0answers
698 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 ...
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 ...
2
votes
2answers
4k views

What can I do when my GPS doesn't work (or if my tablet doesn't have GPS)?

The problem: I want to use an (offline|online) navigation app but: I have an Asus Transformer Prime with very bad GPS reception I have a tablet without GPS (e.g., a Nook Color) My phone has a very ...
2
votes
1answer
2k views

Galaxy SII not reporting Signal Strength

I recently bought a Samsung Galaxy SII which in general has worked perfectly for me. My only issue is that the phone won't report the signal strength. If I get to the phone information (using the * # *...
2
votes
1answer
408 views

archos 7 wlan receiver antenna

Do you know in which side the wlan receiver antenna on archos 7 HT is located? I'm just wondering if it will affect the signal strength received if we cover the "spot", e.g. with our palm.
2
votes
0answers
1k 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 ...
2
votes
0answers
35 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
0answers
54 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 ...
2
votes
2answers
5k 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
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 ...
2
votes
0answers
94 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 ...
1
vote
2answers
6k 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? ...
1
vote
1answer
497 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 ...
1
vote
1answer
19k 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 ...
1
vote
1answer
10k views

Low Signal Strength after Firmware Upgrade

When I first bought my Samsung Galaxy S (GT-I9000) phone a month ago, it had it's factory installed 2.1 Eclair running. Despite many 'Android Market' apps not being compatable with it, my signal ...
1
vote
1answer
2k views

Do external booster antennas help with 4G reception?

I have a Sprint HTC-EVO 4G. Today it's snowing, I'm in a downtown high-rise, and I'm only getting 3G. Would a booster antenna help (either now, or in general)?
1
vote
1answer
586 views

Best Wi-Fi Performance Doesn't Do Anything

In wireless options there is such setup, but it does not do anything. It doesn't increase coverage or signal. And i think it does not consume more power. Why? Because this option does not apply ...
1
vote
2answers
89k views

Phone won't connect to mobile network

As of yesterday my phone was okay as I know I had a missed call and checked it on voicemail, but today I noticed that it is showing no signal when there should be one. The last thing I know I did was ...
1
vote
1answer
109 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
2answers
832 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
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 ...
1
vote
0answers
58 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 ...
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
0answers
1k views

Allow wifi weak signal connect

I have 2 ZTE Blades (with 512 Mb RAM) and CM7 2.3.7 (Kang) from BurgerZ ROM installed on them. One of them - my girl's - can connect to home and other (public i.e. McDonalds) wifi AP's even if it's ...
0
votes
1answer
239 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 ...
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?
0
votes
1answer
41 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 ...