A cellular network or mobile network is a radio network distributed over land areas called cells, each served by at least one fixed-location transceiver, known as a cell site or base station. In a cellular network, each cell uses a different set of frequencies from neighboring cells, to avoid ...

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2
votes
1answer
1k views

Samsung Galaxy Nexus 4.1.2 Unable to connect to mobile network

I recently purchased the handset from the US and currently using it in Vodafone (India) . I upgraded the firmware to 4.1.2 it was working fine and then all of a sudden I am not able to connect to any ...
2
votes
1answer
2k views

Change mobile network DNS on Lollipop and up

Ok, this is a constantly asked question, how to change mobile network DNS. But in different Android version, you will get different method. So this is the reason I ask this. I have already known a ...
0
votes
1answer
3k views

metropcs ZTE no network and doesn't connect,

I recently had to factory reset my phone. Now when I put the SIM card in from my Huawei it won't connect to the carrier data network, it only works on WiFi.
0
votes
1answer
3k views

network problem after update in lollypop of Micromax unite 2

I updated my unite 2 4gb from service Center in Lollypop. After then its problem create no network some time . Then its fixe when I on flight mode and off it or restarting phone. But after some time ...
0
votes
1answer
28 views

Nexus 9 - How do I change the cellular band?

I've got an international edition 32GB Nexus 9 LTE. It appears to be unable to connect to 3.5G / HSPA+ networks, as a result, I get poor data speeds (3G is pretty slow for my requirements). I've got ...
3
votes
1answer
4k views

No Service on Galaxy SL GT I9003

I have a Samsung Galaxy SL running Android 2.3.6. I bought a new battery and it was working perfectly until I put on recharge. Immidiately after I put it for recharge, it started showing "No ...
1
vote
1answer
2k views

Power Efficiency: Network mode 4G LTE vs 3G GSM/WCDMA?

Firstly I think this is the right place to post this, sorry if it isn't - and please let me know! Which network mode is more power efficient: LTE 4G or GSM 3G? I assume using a 4G network uses more ...
0
votes
2answers
7k views

Micromax Unite 2 A106 updated to Lollipop version and no network or sim detected

Using Micromax Unite 2 A106, updated to latest version of lollipop, after finalization and restarting my phone is not able to detect any SIM/network. Also no display of selection of Mobile network is ...
0
votes
1answer
4k views

No option for “mobile network” on Dell Venue 8

My friend has bought new "Dell Venue 8 3830" tablet with Android JellyBean 4.3. Now we want to connect a 3g dongle (D-Link) via a micro-usb cable which came with it. When i connect the dongle to the ...
16
votes
2answers
48k views

What does the “Aggressive Wi-Fi to Cellular handover” option in Developer Settings do?

In Android Lollipop 5.0, I noticed that "Developer Options" features a checkbox for "Aggressive Wi-Fi to Cellular handover" that is unchecked by default. Does anybody know what this setting does and ...
1
vote
2answers
14k views

Losing network operator on Samsung Galaxy SIII mini

For some time now (I think it's from the latest Android update) I have this problem, that time to time (on daily basis) people can not reach me, like I would lose connection to the Network. I get an ...
1
vote
1answer
8k views

Which modem firmware for Samsung Galaxy S (GT-I9000) works best with the mobile networks in Russia?

Trying to use a Samsung Galaxy S device coming from China or Korea in Russia lead to the observation that the quality of the connection to the mobile network is much worse than on Samsung Galaxy S we ...
2
votes
4answers
51k views

Can't download apps from Google Play store via mobile network

I have a Sony Xperia sola in Egypt. I bought it with Gingerbread, then I upgraded to ICS 4.0.4. After the upgrade, I became unable to download any apps from Google Play using my mobile network, and ...
1
vote
2answers
9k views

Signal problem with Samsung Galaxy Y GT-S5630 mobile

I am using Samsung Galaxy Y GT-S5630 phone with IDEA network provider. I am having signal loss problems many times a times. When I try to make a call, it says "Network unavailable". I though this ...
4
votes
1answer
2k views

DNS blocking on mobile networks?

I'm using my HTC One phone on Sprint's network in NYC, and noticed that my phone cannot access Imgur. On Chrome, when using mobile data (3G/4G): http://i.imgur.com/TDvhBMA.jpg Fails to resolve ...
4
votes
1answer
4k views

3g network connection Problem while using data

For last two months or so, the situation in my two years old international HTC One X is that the data is not connecting when it is on 3g network but it is working absolutely fine with 2g network. when ...
4
votes
2answers
4k views

Android lollipop Nexus5 mobile network exclamation mark

I am using nexus5 and I have never had problems using mobile data network. Some days ago I updated to 5.0.1 and problems started occuring, exclamation mark on mobile network icon, internet stopped ...
3
votes
2answers
375 views

Why does my phone say I am roaming when connected to my “home” network?

I recently got a new phone, the Elephone P7000 and it runs stock android 5.0. Everything seems to work perfectly apart from the fact that most of the time the top status bar says I am roaming. When I ...
1
vote
0answers
30 views

Port forward tethered usb device to external network?

Alright, basically I have my nexus 7 set up to tether my local internet connection to my raspberry pi. I want to be able to ssh to my raspberry pi from devices on my local network. Because my tablet ...
2
votes
1answer
46 views

Can cellular network providers detect the phone model/make when their sim is activated?

When the user inserts the sim card and activates, can the cellular network provider detect what phone the user uses? Like say Motorola Droid. Or at least the phone is a smartphone or not?
1
vote
0answers
41 views

Dual active LTE + multipath tcp + VPN

I travel a lot and having a constantly reliable Internet connection is high on my priority list. Tethering from my phone is often times spotty. Different carriers are good in some areas and poor in ...
2
votes
2answers
5k views

4G mobile data being used even when mobile data setting is off?

I have a Motorola Moto G, the 4G version, with the original ROM upgraded to the latest version (4.4.4 official from Motorola). The first thing I did when I got it was the same I have done when I got ...
1
vote
1answer
274 views

Cannot connect to Network - EMERGENCY CALLS ONLY

I was trying out some ROMs which I downloaded from needrom.com. At first it was fine. Then when I flashed a particular ROM, I started getting "INVALID IMEI" and could not connect to the network ...
2
votes
0answers
30 views

Nexus 4 3G not working

The phone is running AOSP Marshmallow, it is rooted and has Xposed installed. Mobile operator is Latvian Mobile Phone with working data plan. I can send and receive calls and texts and use WiFi. So ...
3
votes
3answers
4k views

My phone not registering to 2G (GSM only) network

I am using a Sony Xperia Neo L (MT25i). After updating the OS, my phone not registering to 2G (GSM only mode) network. It works perfectly with 3G (WCDMA only or WCDMA proffered mode) network. While ...
0
votes
0answers
54 views

Why is my LG G3 receiving text messages with the wrong words?

I am using the LG G3 on AT&T's network. When receiving messages from a Galaxy S5, also on AT&T's network, the last part of the message shows words that the other person did not send to me. If ...
0
votes
0answers
394 views

Micromax A106-Network Issue after System update

Mobile Model- Micromax A106 I am facing some problem when I try to connect Internet after System update. When I switchon the Data Connection, the internet Symbol "E" is not appeared at the top and the ...
1
vote
3answers
4k views

Is it possible to set DNS for mobile network

I live in Canada and use an unblocking service to access US Netflix content, Pandora and Hulu. I would like to be able to use this service while not on my WiFi is there a way to set the DNS server to ...
0
votes
2answers
77 views

Will it work if I set up a http/ssh/ftp server on my android phone using the cellular mobile network?

I can set up a ssh server on my android phone, by running SSH Server by Ice Code App on my Android 4.4.2 phone over my home WiFi network. So my laptop can access the my phone via ssh in the same WiFi ...
24
votes
3answers
49k views

How can phone companies detect tethering (incl. Wifi hotspot)

Mobile network operators (also: telephone companies, telcos, providers) sometimes offer low cost data packages that are usable only on the phone. Or so, they say. How can they distinguish between a ...
1
vote
2answers
10k views

No mobile signal after installing CyanogenMod

I have a Samsung Galaxy S 2 (GT-I9100) and baseband version I9100XXMS3. As far as I understand from this page it's a UK modem, which is where I am. When using the latest stock Android I was still able ...
0
votes
1answer
108 views

LG G2 not picking 3G and GSM Signals

I just bought an LG G2 32GB Version from China. The problem is it does not pick up any network connection, it keeps saying Searching for service. I just noticed the box is written 100%LTE. Is there ...
1
vote
1answer
13k views

Moto G2 internet connection switch from 3G to 2G network

I am using Moto G2 with Lollipop 5.0.2. And I am having this trouble that whenever I am using 3G service, it automatically switches to 2G and in between it gets back to 3G. This keeps on going and ...
0
votes
0answers
348 views

I can't connect to a device that is connected with GPRS

My android 2.3 phone is connecting to the internet using the GPRS network and I get a new IP everytime I reconnect. So now I try to connect to my phone which is connected to the internet - the ...
1
vote
1answer
864 views

Will my new Xiaomi RedMi Note 2 prime work for LTE network?

I just bought this smartphone, and I am confused if it will work in my area and if it will work for 4G and LTE. I called the support of T-Mobile, and they said if it configured correctlly, it will ...
0
votes
0answers
29 views

Samsung Galaxy Nexus running Android 4.3 shows “no network” after doing factory reset

I got my Samsung Galaxy Nexus with Android 4.3 from my mum, just yesterday. I factory reset it before using it and afterwards I inserted my SIM card and it shows "no network ". I manually searched, ...
0
votes
0answers
30 views

Experiencing frequent network[operator] disconnects on Nexus 4

I frequently find my nexus 4 showing "Emergency calls only" as the network gets disconnected, and 90% of the times it does not automatically connects. Whenever i am travelling, this problem is more ...
-1
votes
1answer
233 views

Is it possible to adblock while on mobile data?

I can use AdBlock Plus to block ads on wifi. Is there a way to do it while on mobile data? I'd like to use it in Chrome, if possible.
0
votes
1answer
284 views

Mobile network sign disappears, replaced by “stop sign” icon

I am using Samsung Galaxy Note 10.1 N8000 device. I have SIM card inserted for mobile data usage. First time, it is working as I captured status bar image as shown with mobile data sign :- but ...
1
vote
0answers
163 views

GPS is not getting fix signal

I have a couple devices (Moto e XT1021, Moto e 2nd gen). Suddenly the app running on these devices stopped working, due the device stop receiving gps changes updates. I did some research and tests, ...
0
votes
0answers
108 views

Galaxy s5 network mode disabled

I recently bought a Samsung Galaxy S5 (SM-G900R7) from Swappa.com and as per the seller the phone has a clean IMEI (which is true as per multiple website checks) and is unlocked**(I have a doubt ...
2
votes
2answers
31k views

Enable Location Services via Remote Control

I always disable (Google) Location Services on my phone because they are always drain a lot battery (probably because my mobile Internet is very slow). But in case I lose my phone I can't use any ...
-1
votes
1answer
681 views

Why are my call settings disabled (and which settings require operator support and which settings are normally included in service plans)? [closed]

As shown in the screenshot below, on my Samsung Galaxy SIII, when I go to Phone -> Call Settings, almost everything is disabled/grayed out. I have a SIM card inside my phone but have not topped up ...
4
votes
6answers
17k views

Some app keeps turning on mobile data

There is some app that turns on mobile data. I turn it off but on sleep or power up it is back on. It is very annoying and potentially costly since I do not have a data plan. (this seems like an ...
1
vote
2answers
16k views

What is the difference between dual sim active and dual sim stand-by?

I am Using Sony Xperia Tipo Dual, which is Dual Sim Smartphone, but When i use internet from SIM 1 using Network Mode = GSM only or WCDMA/ GSM the another SIM's says NO NETWORK. When i deactivate my ...
1
vote
0answers
131 views

“com.android.phone has stopped” after reboot, cured by changing Preferred Network — how to make permanent

Phone info: "Google Play Edition" Galaxy S4 - GT-I9505ZWG Android 5.1, build number LMY470.S008.150802 AT&T, Philadelphia After rebooting the phone, I get the "com.android.phone has stopped" ...
0
votes
0answers
159 views

What is my cellular network connection status?

I am using wifi and have disabled data on Android 4.4.2. My phone status shows that my mobile network type is somtimes 1xRT and somtimes EVDO but not both, while both voice and data are in service. ...
0
votes
0answers
168 views

“No Service” after device shutdown - software or hardware issue?

I own an LG P880 (Optimus 4X HD) device running cm-11-20150824-NIGHTLY, which was installed about a month ago and worked fine so far. Followed by low battery the device was automatically turned off. ...
0
votes
0answers
50 views

Port forward in external ip

How to forward ports in external ip. I tried port forwarder but it forwards my internal ip ports like 10.xxx.xx.xxx to 192.168.0.1 How to actually forward ports To my external ip? so that i could ...
1
vote
0answers
70 views

Private communication over wifi but internet over 3G

I have a raspberry pi which creates an WiFi hotspot and I want my android app to communicate with the pi over that connection. The big problem now is that the pi has no internet access so I would like ...