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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246 views

How can I change preferred network type through a script (or terminal command)

I'm currently attempting to create a workaround for a problem that is plaguing a ROM that I'm using. While my phone and ROM are capable of using LTE, and use it perfectly fine, the "preferred network ...
2
votes
0answers
2k 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 ...
2
votes
0answers
673 views

“Data roaming” unchecked but connected to foreign network for data anyway

I am using a Galaxy Nexus LTE running Jelly Bean 4.2.2 with service from Verizon Wireless in the U.S. In Settings > Wireless & Networks > Mobile networks, I have: Data enabled: on Data roaming: ...
2
votes
0answers
2k views

My Google Nexus S won't connect to network

I have a problem with my Google Nexus S. Yesterday I was out in the city and my battery meanwhile died and the phone shutdown. The next day when I charged the phone, I noticed that it is showing no ...
1
vote
0answers
76 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 ...
1
vote
0answers
95 views

How to lock network operator or to never go on roaming, or get out of roaming as soon as possible

I work really close to a country border, and I do NOT want my phone to connect to other operators than mine. Sometimes the operator from my home country will be unavailable for a brief period of ...
1
vote
0answers
28 views

How does Android perform Data-Wifi Switch

I am trying to learn from Android source on Data-Wifi automatic switch. The closest I can get is DataCommand and WifiCommand, they seem to switch network preference (through ConnectivityManager), by ...
1
vote
0answers
66 views

How can I keep my mobile data connection up when establishing a non-internet capable WiFi connection?

I'm using a Raspberry Pi to stream music wirelessly inside my car. The Pi has a wireless network without real a exit to the outside world. I want to connect to that 'internet-less' network and still ...
1
vote
0answers
45 views

Changing the default ports for an application

I have to use a public WiFi service that blocks a number of ports related to online games (Clash of Clans mostly). On a pc this wouldn't be a problem to get around, on a phone though, I'm not so sure. ...
1
vote
0answers
919 views

Lollipop update on MotoG causing no service for sim card

I was using Moto G(1st gen) phone for the past 1 year. I was using 2 sims and I didnt face any problem for 1 year. After getting lollipop update, I frequently get 'no service' for one of my sim. ...
1
vote
0answers
86 views

Network not changed from 3G to 2G on Xperia L

I am using Xperia L, If i used 3G connection in one place then i moved to other place if 3G connection is not available means my phone not changed to 2G connection, i set network setting mode is ...
1
vote
0answers
45 views

Change how a phone identifies itself on the network

I currently own a Nexus 5. My mobile carrier just now begun providing LTE, but my Nexus 5 apparently isn't in its "list of compatible devices". Is there a way for me to change how the network ...
1
vote
0answers
140 views

Installing CyanogenMod changed phone number, no voice service

A few days ago, I installed cyanogenmod on my phone (From here), and I noticed that my phone couldn't get or send calls or texts. When I went to Settings>About>Status, the phone number and MIN showed ...
1
vote
0answers
88 views

Listen to Address Resolution Protocol (ARP) packet

Can an Android application generate or listen to ARP packet without root privilege ? Thank!
1
vote
0answers
1k views

Tasker (switch off mobile data automatically) causing trouble under CyanogenMod

I used to use this Tasker profile for nearly a year now already and it used to work fine, until I recently switched from the Samsung default UI TouchWiz to CyanogenMod on my Galaxy Note. The Task ...
1
vote
0answers
200 views

my samsung galaxy w doesn't register on 2g network

I've tried factory reset and manual search but no solution for the problem it works on i have flashed this rom: I8150JPLM7_I8150OJPLM4_I8150XXLMB, and no solution.
1
vote
0answers
376 views

Losing network connections when using GPS

I'm having the same kind of problem as described in these threads, using a rooted HTC One S with Dark Jelly S rom: Thread on XDA-Developers Thead on CyanogenMod Forum When activating GPS while using ...
1
vote
0answers
2k views

Samsung Galaxy S3 “Not registered on network”

It had stock 4.0.4 -> could call. I've flashed FoxHound ROM -> after a while, when I try calling, it says "Not registered on network" . Tried GalaxSim, but everything looks ok. Restored back to ...
1
vote
0answers
750 views

Android 4.0 - cannot set preferred network type

I want to change the preferred network type from the current setting of 'unknown'. I go into the tablet using the *#....access and it lets me see all the various info sections. When i go into Tablet ...
1
vote
0answers
1k views

Galaxy S Advance Network Issues

I recently bought a Galaxy S Advance GT-I9070. Its not even a week since I've bought the phone. When this phone goes into an area with low or no network coverage it loses coverage and never regains ...
0
votes
0answers
163 views
+50

How to change “Preferred Network Mode” using adb without reboot?

I'm trying to change my phone's (CM 12, Stock 4.2, both rooted) preferred network mode from "GSM/WCDMA" (0) to "WCDMA only" (2) and vice versa (there can be other modes too), using command-line only. ...
0
votes
0answers
29 views

Traffic logs on android

Very noob question here, but I was wondering if there is a simple way to look at how much traffic I've sent or received on android (not rooted, no specialist apps installed for it). I burned through ...
0
votes
0answers
132 views

How to reset network settings on android?

I recently reset my phone to factory settings and now i am having network issues,I can't make or receive calls even when signal of my sim are full,only occasionally i can do it.Its not a problem of ...
0
votes
0answers
75 views

Moto G 2nd Gen can't connect to the Internet when switching from 3G to 2G

I got a new Moto g2.When using the device with 3G, it works great. But when I switch to a 2G network, the internet connect stops working after a few seconds. Why is this happening?
0
votes
0answers
104 views

How to diagnose network connection issues?

My phone never connects to the 4G network, despite me being on a 4G plan (it at most connects to H+) and very frequently it'll lose the connection - can't use mobile data, receive SMSs or make phone ...
0
votes
0answers
77 views

ZTE Blade G lux - no network

I have a problem with my brand new ZTE Blade G lux. I bought it from Mexico (from authorized distributor, so that shouldn't be the problem) and it worked well with my mexican sim. When I got back home ...
0
votes
0answers
34 views

How to use mobile data just for one application when connected to a specific WiFi network?

My company offer a open wifi, but its proxy blocks one of my application data (Whatsapp). I'd like to use wifi to all apps with only one exception (Whatsapp). My phone is not rooted (Galaxy Note 4). ...
0
votes
0answers
26 views

Automatic Network Searching

In motog2 I am unable to but my phone on automatic network searching when I am in roaming the phone is unable to search the network automatically please help
0
votes
0answers
36 views

Will Micromax A1 work with a US SIM card

I have a Micromax Canvas A1, model No. AQ4501, Android Version 4.4.4 with Connectivity as follows. Can I get a SIM card in the US that will work on this mobile? Does WCDMA work in the US? Frequency ...
0
votes
0answers
196 views

Checking for SIM card defects

Short question: How can I obtain detailed information about my SIM card, using Android apps and/or adb (possibly root)? I'd like to diagnose mobile data connection problems possibly caused by SIM ...
0
votes
0answers
122 views

Configuring ssh reverse tunneling on Android 5.0 installed on the Nexus 10

I'm connected to the campus of my university and I know for sure that there is a firewall that blocks a lot of ports and the server does not support the IP forwarding and for this reason I can't give ...
0
votes
0answers
127 views

Disable automatic network operator switch

I have a dualSIM phone with Android 2.3.5. The problem is that it automatically changes the network operator instead of warning me that there is no service. I was selected the operator with "Search ...
0
votes
0answers
70 views

Nexus 5 - Network/Antenna problem

I am using a Nexus 5 purchased from google and running lolipop OS on Wind network in Canada. Had the service running for 6 months without issues and suddenly it is unable to connect to the Wind ...
0
votes
0answers
26 views

find which app sync data in roaming

i am facing some issue in Nexus 5. In my phone some apps that used Mobile-Network for syncing the data in background but i don't know. Every 1 hour message is coming with data usage. But i don't ...
0
votes
0answers
159 views

Recovering lost or stolen phone (security and feasability considerations)?

I am trying to understand a little bit about security in case my phone goes stolen. I have read that even if a phone is stolen and the SIM card is removed, it can still be possible to find your phone ...
0
votes
0answers
186 views

SIP an Android: How does it work, how do I set it up, and how do I use it?

I am running Android 4.3 Jelly Bean on a Samsung Galaxy SIII. I've seen various posts on this site and on the Internet concerning SIP (Session Initiation Protocol). I've read a little bit about this ...
0
votes
0answers
208 views

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

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 ...
0
votes
0answers
210 views

Call log not displaying missed call when Network Data reenabled?

Sometimes Network Data is off. This could happen because the user intentionally disables it for some purpose (such as to decrease exposure to radiation), or because the user is on a plane and when ...
0
votes
0answers
110 views

How to check for supported wireless network data protocols?

Is it possible to check which of the following wireless network protocols are supported on an Android device by installing an application rather than by checking the device's specifications on the ...
0
votes
0answers
96 views

Why is there Infinite UDP broadcast traffic on tethering my android phone to computer?

I have a android samsung galaxy chat b5330. When I connect it to my Ubuntu Linux computer using usb tethering, an infinite sequence of similar UDP traffic is noted by Wireshark. The summary of the ...
0
votes
0answers
133 views

Some applications on my xperia z1 mobile won't be able to use internet over Mobile data where the other apps use it normally

Some applications on my xperia z1 mobile won't be able to use internet over Mobile data where the other apps use it normally. For example I can't use "Facebook" neither "Gmail " where I can use ...
0
votes
0answers
91 views

not registered on network and seems the imei is changed

I have an international version of galaxy s3 gt i9300 it had android 4.0.4 working fine when i bought it(second hand) then i upgraded it to 4.3. Since then it performs as a normal device would but can ...
0
votes
0answers
48 views

networking problem in huawei and phone often disconnect

my maxis network/bars often disconnect. anything wrong with the phone? I have tried to format but still the same.
0
votes
0answers
25 views

Force Galaxy Nexus to always login to one network

My (Polish, Play) carrier has signed internal agreements with probably all of top carriers in my country. This allows their SIM cards to login and us both mother network and all other networks ...
0
votes
0answers
184 views

Samsung Galaxy disconnected from network

My GTS5300 Samsung galaxy shows mobile network disconnected. How do I connect? What are the settings?
0
votes
0answers
131 views

What could explain duplicate network operators being listed on Nexus 5 with Kitkat 4.4.4?

I have recently purchased a Nexus 5 phone using Videotron as my service provider (Quebec/Canada). Videotron has recently launched its LTE network, and ever since I have switched my SIM so that I could ...
0
votes
0answers
105 views

Limited mobile network connectivity with cyanogenmod 11 on HTC

I am facing network connectivity problems on a HTC Desire phone running cyanogenmod 11. While not connected to any WLAN I do receive mails via IMAP, can send mails via smtp but cannot connect to any ...
0
votes
0answers
21 views

how to reset the PGW connection

My mobile phone on T-Mobile US seems to stay on a given PGW for days on end, having the same external IPv4 address. Very often, their PGWs get stuck after a while, or, they reboot all of them, and I ...
0
votes
0answers
235 views

Sudden surge in network usage by unknown processes

Phone Details: Model: Nexus 4 (mako) Current ROM: Paranoid Android 4.3-BETA2 Xposed Present? Yes I flashed the new Paranoid Android 4.4- BETA1 today and noticed my phone downloading something. I ...
0
votes
0answers
1k views

Galaxy S3: I747UCUEMJB upgrade - baseband unknown

Last night I updated my Galaxy S3 from Cyanogenmod 9 to CM 11. One of the steps was to upgrade the bootloader. Everything went fine, and I'm now on CM 11-2014-06-02-d2lte. The problem: can't connect ...