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Questions tagged [network-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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If I have a GSM device, with a radio that has common LTE bands between carriers, is it possible to compare available bands and signal strength?

I'd like to know if it is possible, given that I have devices which can operate on multiple networks, if I can use that device to check the signal strength of a competitor network in the area. I live ...
daclac's user avatar
  • 1
1 vote
1 answer
468 views

Any method to enabled n28b band on MIUI phone?

Actually, I'm not sure if n28a and n28b are in the n28 band, or if they're different in the first place (even though the frequencies are both 700). Because the cell phone info sites I know of usually ...
Shallow_Wind's user avatar
0 votes
1 answer
43 views

Low signal in my Samsung Galaxy Note 10 5G

Yesterday, I bought a Galaxy Note 10 5G smartphone that was previously used but it looks like a new one. I inspected the phone before buying it and everything was alright. However, after inserting the ...
Salem's user avatar
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1 vote
1 answer
124 views

Can any other programs affect receiving WhatsApp messages when in use?

Curious as to why one gray tick happens when sending a WhatsApp message, as well as why calls are not being received. Is it possible that another program conflicts with WhatsApp and the ability to ...
Nerdygirl's user avatar
0 votes
0 answers
19 views

Android devices take upto 10 minutes to acquire cellular reception after boot while roaming

When I boot android device having a SIM on roaming it took around 2-10 minutes to get cellular reception. I've tested this on multiple devices, similar behavior. One interesting thing is, if device is ...
Al Mamun's user avatar
  • 101
3 votes
0 answers
58 views

CDMA signal disappear after changing network using an app

My phone is a replicate of the Huawei P8 called p8 lt Dual sim Android 6.01. After I used an app called Network Mode Universal to enable LTE on my phone, the signal disappear and I can't use my CDMA ...
snpay's user avatar
  • 31
0 votes
0 answers
103 views

Force network operator

I'm getting my phone service through a medium sized company in my country, which means they have their own LTE network (called ice+). With my current plan I have practically free use of this network, ...
Imicoz's user avatar
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0 votes
1 answer
214 views

Why are these different Android maximum upload and download speeds?

The following screenshot is from Realme 8 which has a max UL/DL of 15000/30000. The next screenshot is from Asus Zenfone Max Pro (M2) which has a max UL/DL of 51200/102400. The problem I am facing ...
SAM GARAI's user avatar
1 vote
0 answers
4k views

How can I simultaneously use mobile data and WiFi?

Through a combination of Afwall/Netguard and Automate/Tasker, I'd like to use both my mobile data and WiF at the same time. For example, I'd like for some live/realtime widgets on the homescreen to ...
Dansean's user avatar
  • 11
1 vote
1 answer
180 views

Phone's download speed doesn't go over 10 Mbps(1.2 MBps)

I have an ASUS Zenfone Max Pro M1(X00_TD). Lately, I have noticed that my phone's downloading or uploading speeds don't go over 10 to 15 Mbps. It has a 2.4 G wifi and easily used to give me 40-60 Mbps ...
Saki Osive's user avatar
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1k views

Programming an Android application to switch default SIM for mobile Data

I am working on a project in which I have to switch the default SIM for data automatically, and without the need for user intervention. I read some posts on internet and got to know a method in which ...
Smart Learning For IIT-JEE's user avatar
1 vote
0 answers
34 views

Notify when getting "no signal" on the LG Q6

For several days now, the LG Q6 has made me angry when it suddenly stops detecting the SIM card. (once or twice a day) I don't want to discuss the cause and possible solution. (Restart always helps) ...
yoda666's user avatar
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1 vote
0 answers
416 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 ...
ThatCampbellKid's user avatar
1 vote
0 answers
225 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 ...
Sean's user avatar
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1 vote
1 answer
83 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 ...
Saravanan G's user avatar
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0 answers
63 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 ...
Kaninchen's user avatar
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1 vote
0 answers
61 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 ...
Brainless's user avatar
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0 votes
0 answers
100 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 ...
Van Dyke's user avatar
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0 answers
194 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 ...
Ozan Deniz's user avatar
0 votes
1 answer
776 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 ...
Pollocedrone's user avatar
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0 answers
198 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 ...
Vishwa's user avatar
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1 vote
1 answer
695 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 ...
noderman's user avatar
  • 113
0 votes
0 answers
311 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 ...
Damian Doman's user avatar
4 votes
1 answer
4k views

RSSI range for WiFi icons

What is stock RSSI range for the WiFi indicator icon in notification bar?
Sam Denty's user avatar
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0 votes
1 answer
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?
Mlabuit's user avatar
2 votes
0 answers
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 ...
tezz99's user avatar
  • 21
3 votes
0 answers
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 ...
That Brazilian Guy's user avatar
0 votes
1 answer
38 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 '...
papakias's user avatar
  • 539
-1 votes
1 answer
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 ...
Pandya's user avatar
  • 457
2 votes
0 answers
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). ...
Ram's user avatar
  • 21
-2 votes
1 answer
128 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?
traykz's user avatar
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1 vote
1 answer
124 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 ...
SomeGuy's user avatar
  • 315
1 vote
0 answers
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 (at ...
nametal's user avatar
  • 121
1 vote
0 answers
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 ...
user135037's user avatar
3 votes
2 answers
9k 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? ...
Tim's user avatar
  • 495
3 votes
2 answers
7k 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 ...
Samir's user avatar
  • 1,415
2 votes
0 answers
58 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 ...
Anthony Hernandez's user avatar
0 votes
1 answer
48 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 ...
paranoidhominid's user avatar
0 votes
1 answer
859 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....
user285oo6's user avatar
  • 1,228
1 vote
2 answers
872 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 ...
Trey's user avatar
  • 113
1 vote
1 answer
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 ...
Walker's user avatar
  • 11
0 votes
1 answer
7k 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 ...
Stephen Igwue's user avatar
0 votes
1 answer
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 ...
Gman's user avatar
  • 101
0 votes
1 answer
723 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,...
cnst's user avatar
  • 859
0 votes
1 answer
315 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 ...
matthew_360's user avatar
2 votes
0 answers
77 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 ...
thename's user avatar
  • 21
1 vote
1 answer
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 ...
SPRBRN's user avatar
  • 722
6 votes
3 answers
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 ...
musicwithoutpaper's user avatar
19 votes
2 answers
38k 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: ...
Mridang Agarwalla's user avatar
2 votes
0 answers
104 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 ...
Fred Thomsen's user avatar