This tag is meant for issues with the mobile data connection. For other connection issues please use the tag relevant to those, e.g. 'wifi', 'usb' or 'bluetooth'.

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55
votes
2answers
32k views

What does it mean when the connectivity icons in the status bar go white/gray?

The connectivity icons (Data, Mobile Signal, Wifi) in the status bar on my Nexus S are normally green, but sometimes they go white. I can't seem to figure out what this means, as I still have a signal ...
1
vote
3answers
15k views

Why can't apps connect to the internet?

Running on both WiFi and mobile connection, the browser can connect to the internet ok but apps can not connect. What can cause this? Samsung Galaxy S
32
votes
6answers
16k views

Can I use 2 android phones as walkie talkie? (without internet!)

I want to use 2 (or more) android phones as walkie-talkie (i.e. they talk each other without needing internet/voice call). Of course this should work with WiFi, because it doesn't make much sense a ...
9
votes
2answers
2k views

Preventing mobile data use for select apps on non-rooted phone?

I have a number of apps that are fairly chatty on the network, and with a limited data connection I would like these apps to not use the 3G connection (WiFi is fine). I know that rooting the phone ...
7
votes
3answers
3k views

How can I disable cellular data on an Android device?

Can I easily disable cellular data on an Android device and just use Wi-Fi? Does this change based on whether or not I have root on the device?
12
votes
1answer
4k views

How do I enable Mobile Data only for select apps on a rooted phone?

Unfortunately my carrier charges €0.10 per MB of data -- and I've found out the hard way that Android is a data hog. As a result I keep my mobile data almost exclusively off. Is there a way, perhaps ...
10
votes
4answers
4k views

How can I prevent my phone from using any kind of internet?

I have a weird plan and my phone went over its bandwidth usage this month... mostly just syncing up with Gmail, Twitter etc. So right now, every 5 minutes or so, my phone is telling me that it has ...
11
votes
2answers
2k views

Restart data connection when stalled?

Occasionally the data connection of my mobile will stall, i.e. it still looks like it does have a data connection (either "H" or "G"), but no server can be contacted. (In particular, my ROM being a ...
5
votes
2answers
14k views

Allow only specific apps to use cell data, only when on 3G

I use Tasker to sync every 30 mins when on 3G. I'm on a limited data plan, and the only apps I use constantly are browser, a Twitter app (Echofon) and Whatsapp. Is there a way to allow only these apps ...
13
votes
3answers
2k views

Can I use an Android phone without an Internet access plan?

I'm interested in buying an Android phone for Xmas. Currently my pick is LG Optimus One. I will be using it without any Internet access plan, only using Wifi wherever possible. Some questions that I ...
4
votes
4answers
3k views

Is it possible for my mobile carrier to track my wifi usage and bill me accordingly?

I watch a lot of inspiration videos from TED (www.ted.com.au) on my new Galaxy S2 phone. However, I only do this when I am at home and can access my home wifi network. My home wifi and the phone's 3G ...
3
votes
1answer
5k views

Is it possible to selectively limit background data usage?

I have a sufficient data-plan so I've never worried about this... tomorrow though, I'm travelling abroad. Due to this, I will have restricted 3g usage. Are there any apps or Android settings to ...
6
votes
2answers
7k views

How to disable cellular when WiFi is present?

I perform all my communication via the internet (Jabber, SIP), so I only need cellular as a backup. Additionally, coverage at my home is near to nonexistent and as a result, battery drains in a few ...
8
votes
3answers
12k views

Do I need internet/3G to use GPS?

I have a Samsung Galaxy S2 that has some problems with the GPS: If I use internet my navigation works but when I turn the 3G off, GPS does not work. Do I need internet/3G to use GPS?
6
votes
1answer
2k views

With Android 4.4 (KitKat), my notification icons are always gray. Am I in trouble?

With Android 4.3 and earlier, gray/white signal icons in the notification bar informed about connection trouble concerning the Google Services (see e.g. What does it mean when the connectivity icons ...
5
votes
2answers
2k views

Why does Android disable HSDPA/EDGE communication while calling?

My ISP currently has a severe outage, which is why I'm tethering my Android phone and a MacBook over WiFi. The Android phone is a HTC Desire GSM running Cyanogen 7. I have a stable HSDPA/EDGE ...
5
votes
1answer
11k views

How to force network operator selection once and for all?

I'm using HTC Desire running stock Android 2.2 (with HTCs enhancements). There's a network operation selection in Settings / Wireless & netwokrs / Mobile networks / Network operators, which allows ...
8
votes
4answers
5k views

Which consumes less battery: Wi-Fi or 2G data?

I just want to know what consumes less battery Wi-Fi or 2G Data. My battery last long for 12- 16 hours only. I know there are lots of application which continually running and fetching data from ...
5
votes
1answer
2k views

Should I disable mobile data while I'm connected to WiFi?

If WiFi is activated, the phone expends energy trying to find WiFi connections, even if I'm not using the internet. Is the same true for mobile data? Does the phone expend any energy trying to keep a ...
5
votes
3answers
568 views

Minimal Internet usage on an Android phone

I am considering buying an Android phone and hence the question about Internet usage. How much Internet bandwidth can I expect to use if I want to enable syncing of contacts, calendar, email, etc. ...
3
votes
1answer
3k views

How to force phone to switch to faster mobile data network during file transfer

For some context, I am downloading Dragon Mobile Assistant which is a 40+ mb apk from the Google Play Store. I have an unreliable connection to Verizon Wireless' 3G mobile data network. If I am a few ...
3
votes
2answers
382 views

Minimizing data usage for users with data caps

To reduce my phone bill, I recently switched from an unlimited plan to a prepaid plan which only has a 50 Mb data cap per month. I think that should be adequate for email, google voice, and ...
1
vote
1answer
8k views

Data connection problem with my galaxy s3

Hi I have a peculiar data connection problem with my Samsung Galaxy S3. Cellular connections work fine at first however when the mobile loses signal and then reconnects after sometime, the data ...
0
votes
0answers
3k views

After rooting my verizon Galaxy S3, I have no data or cellular connection?

So, when I first rooted my phone, everything worked fine. I had used CM 10.1 (Or at least some version of Cyanogenmod). Being curious, I wanted to try other ROMs. I then installed MUIU v5. Didn't like ...