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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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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 ...
0 votes
0 answers
14 views

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 ...
1 vote
1 answer
501 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 ...
0 votes
1 answer
63 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 ...
1 vote
1 answer
134 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 ...
0 votes
0 answers
20 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 ...
3 votes
0 answers
63 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 ...
0 votes
0 answers
110 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, ...
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? ...
0 votes
1 answer
226 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 ...
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 ...
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 ...
1 vote
1 answer
192 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 ...
0 votes
0 answers
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 ...
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) ...
1 vote
1 answer
84 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 ...
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 ...
1 vote
0 answers
423 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
0 answers
238 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 ...
4 votes
1 answer
5k views

RSSI range for WiFi icons

What is stock RSSI range for the WiFi indicator icon in notification bar?
0 votes
0 answers
65 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
0 answers
64 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
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 ...
5 votes
3 answers
6k 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 ...
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: ...
0 votes
1 answer
777 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
0 answers
195 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
0 answers
199 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 ...
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 ...
3 votes
4 answers
37k 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 ...
1 vote
1 answer
696 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
0 answers
313 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 ...
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 '...
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?
26 votes
5 answers
34k 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 ...
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 ...
1 vote
1 answer
126 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
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 ...
-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 ...
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). ...
-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?
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 ...
7 votes
4 answers
14k 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 ...
1 vote
2 answers
94k 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 ...
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 ...
5 votes
1 answer
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 ...
0 votes
1 answer
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: ...
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 ...
0 votes
1 answer
860 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
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 ...