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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4
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530 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
29 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 ...
2
votes
0answers
767 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
3k 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
26 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 ...
1
vote
0answers
39 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 ...
1
vote
0answers
158 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, ...
1
vote
0answers
130 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" ...
1
vote
0answers
69 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 ...
1
vote
0answers
756 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
45 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
182 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
897 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 ...
1
vote
0answers
89 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
2k 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
160 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
65 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
209 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
169 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
2k 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
205 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
405 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
873 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
51 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
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 ...
0
votes
0answers
103 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 ...
0
votes
0answers
144 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
158 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
48 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 ...
0
votes
0answers
381 views

Can't connect to mobile network on Sony Xperia Z Ultra

Device: Sony Xperia Z Ultra Carrier: The Peoples Operator (Same issue when tested with EE as well) Android Version: 5.0 Lolipop I recently lost the SIM card tray for my device, and Sony sent me out ...
0
votes
0answers
42 views

Issues when registering to mobile network abroad

I have a Motorola Moto G with Android 5.02, and a subscription for Vodafone and everything is working fine when I'm connecting to the mobile network in my country (Romania), but when I travel abroad I ...
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
103 views

Data network problem: Chrome timeouts while Twitter fine

My OnePlus One cellphone works fine with WiFi. Android 5.0.2, OxigenOS 1.0.0. All apps are updated. However, when on data (3G or LTE), Chrome, Google Play and a few other apps can not communicate ...
0
votes
0answers
387 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 ...
0
votes
0answers
35 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
146 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
178 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
217 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
42 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
47 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
86 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
277 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
307 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
112 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
188 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
176 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
120 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
409 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 ...