Questions tagged [wi-fi]

For questions specifically about issues with WLAN network connectivity (via a wireless router) as opposed to questions related to cellular connections (2G/3G/4G, etc.).

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60
votes
8answers
96k 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 ...
59
votes
8answers
256k views

How do you import CA certificates onto an Android phone?

I want to connect to my University's wireless using my Nexus One. When I go to "Add Wi-Fi network" in Wireless Settings I fill in the Network SSID and select 802.1x Enterprise for the security and ...
42
votes
4answers
90k views

Can I automatically log in to open WiFi that requires web login/password?

There are lots of wifi hotspots that are open, but require a web-based login to use. Hotels, coffeeshops, workplaces. For password-protected wifi, it's easy to set up Android phones to remember the ...
37
votes
4answers
217k views

Can I use my Android device as Wi-Fi Adapter for my PC (i.e. Tethering to PC through USB, but using Wi-Fi not Phone Network)?

I want to use my Android phone to connect a desktop (windows 7) PC to the internet via Wi-Fi (ie, not muching though my Data plan). Is this possible with the various tethering options out there? The ...
35
votes
3answers
101k views

How to disable captive portal detection? How to remove exclamation mark on Wi-Fi or signal icon in Lollipop?

When connected to the Internet, the system checks if it's in a walled garden, which is simply trying to connect to Google. If it fails, in Android 5, there'll be an exclamation mark on the WiFi icon ...
35
votes
6answers
137k views

What does “avoided poor Internet connection” mean?

The connection to my work wifi just failed and below the network my phone is saying "Avoided poor Internet connection". What does this mean exactly? Has the phone detected that it can't get out to the ...
33
votes
6answers
84k views

Can we use an Android phone as a Wi-Fi repeater?

Can we use an Android phone as a Wi-Fi repeater? Imagine situation when you can access a weak Wi-Fi signal from a free hotspot (coffee shop) signal near window, but want to work in the middle of the ...
29
votes
3answers
114k 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 ...
29
votes
6answers
28k views

Disable a specific WiFi network from automatically connecting to in Android

I have several WiFi networks setup on my android device. I want most of them to automatically connect, but one specifically I don't want to automatically connect to. I want to manually connect to it ...
29
votes
6answers
82k views

Why does my Nexus 5 keep forgetting all wifi passwords after a reboot?

A month ago I got a Nexus 5. It's running Android 4.4.2 (kernel:3.4.0-gadb2201). I noticed after using it for a while that it constantly keeps forgetting all saved wifi passwords after a restart. In ...
28
votes
3answers
158k views

How does WiFi in android detect if the device has to sign in or not?

When the device tries to connect to an access point or router, it has to sign in on the captive portal page with the message saying "Sign in to Wi-Fi network". How does the access point/router ...
28
votes
10answers
57k views

What is the fastest way to transfer huge files beween two android powered devices?

What is the fastest way to transfer huge files (e.g. 500MB) between two android powered devices? Bluetooth? WiFi direct? Beam? or maybe USB on-the-go?
26
votes
3answers
9k views

Remember wifi password but never automatically connect

I have both my wifi password and my friend's saved. Since they live nearby sometimes it will automatically switch to theirs if the signal is stronger. I don't ordinarily want to use their connection ...
25
votes
2answers
36k views

Android Smart Lock: Why is there no option to use WiFi?

My Android device (v. 7.1.2) offers several options to use the "Smart Lock" feature. This feature uses some rules to automatically disable the lockscreen. Available rules are: Trusted place Trusted ...
25
votes
4answers
22k views

How can I tell my device to ignore a public Wi-Fi network?

The city I live in has city-wide Wi-Fi available for a subscription, but the Wi-Fi access point is public. This means that everywhere I go in the city I get a notice that there is public Wi-Fi ...
25
votes
4answers
3k views

Automatically connect to Wi-Fi nodes, but route everything through encryption

Related to my question about VPNs, is there any way to get my phone to automatically connect to unencrypted access points, but route all my traffic through my home network? This would be kind of like ...
24
votes
11answers
19k views

How does power usage for data over WiFi compare to data over 3G? (Ignore LTE for now)

If you have unlimited data over 3G so that cost is no option, which is more power efficient? Using the WiFi or 3G connection for data usage? Extending battery life being the goal
24
votes
5answers
21k 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 ...
23
votes
12answers
189k views

How can I stream audio from my phone over wifi to a speaker or receiver?

I have a Galaxy Nexus and would like to be able to send music from it to speakers or a receiver. Since I use a few different apps to listen to music (Spotify and Pandora mostly but sometimes also ...
22
votes
9answers
141k views

What Android phones are ANT+ hardware enabled?

I'm trying to gather information regarding ANT+ hardware support in Android phones. Basically, what Android phones have ANT wireless hardware? ANT and ANT+ ( http://thisisant.com/ ) as wireless ...
22
votes
2answers
23k views

How can I stop Lollipop ignoring my wifi network?

Android 5.0 has a new "feature": If a wifi network has no connection to the internet, it will remain connected to it but route traffic over mobile data instead. A small exclamation mark shows in the ...
22
votes
3answers
7k views

WiFi high packet loss at home network

I have a mind boggling problem which I have been trying to solve for the last few weeks. I am new to Android and recently bought Huawei Ideos X5 (Android 2.2.1). I haven't found anyone else having ...
21
votes
2answers
2k views

If I use free WiFi in a hotspot, can data be easily sniffed?

If I use my mobile device in a Wifi hotspot, can I take it that it bears the same risks as using a laptop in that data can be easily sniffed and that the mobile device is also open to man-in-the-...
21
votes
2answers
9k views

A rather complex wifi issue (android tablet)

Straight to the point. My wifi has not been working properly since after a few days after upgrading its firmware and android version. Issue description The issue is rather inconsistent. Wifi will ...
20
votes
3answers
39k views

How do I turn off the cellular radio without disabling bluetooth?

I have an old Motorola Droid that is no longer subscribed on any Verizon service. I still use it for things like web browsing, ebooks, and along with some wireless stereo headphones, music. I've ...
20
votes
5answers
26k views

Wi-Fi connection dropping

Lately I've been having trouble keeping a connection to Wi-Fi, first at home and now at work. What happens is that after a while I'll notice that my phone is using 3G. If I go into my Wi-Fi settings,...
19
votes
8answers
10k views

Can I turn off wifi, GPS, etc. on Android phone overnight?

I'd like for my Android phone to automatically turn off some features overnight to save battery, and re-enable them in the morning. Among the things I'd like to turn do: Turn off wifi Turn off the ...
19
votes
9answers
5k views

Can I use a modern Android phone with no phone plan?

I'm new to the Android platform, but am looking into doing some development for Android 2.x, with the hope of publishing an app to the Android App Market eventually. I'd like to be able to test my ...
19
votes
4answers
42k views

How to reach local computer via machine name instead of IP?

Developer here prototyping a mobile app, somewhat new to mobile: I have a simple HTTP service running (currently) on my main laptop with machine name latitude. Another laptop named vaio sharing the ...
18
votes
6answers
39k views

Using SMB server without root access

I'm looking for a way for my HTC Hero (Android 2.1) so I can share the contents of my SD card and phone memory over the WiFi network like a regular Windows file share. I'd like one that does not ...
18
votes
2answers
3k views

How do I keep my wi-fi on in sleep mode

When I am downloading large files I need to stop my phone from sleeping , how do I keep my wi-fi on when the phone is in sleep mode.
18
votes
4answers
13k views

How may I submit a WiFi hotspot to Android's database for a better triangulation?

As we know, in order to locate our position indoors, Android utilizes the nearby Wi-Fi Hotspots' location for triangulation. But how may I submit the Wi-Fi hotspots in my neighborhood to Google's/...
18
votes
2answers
3k views

Restrict market updates to WiFi network

In order to save some volume on my data plan, I'd like to limit updates from the market to the times when I'm connected to a WiFi. And as every good geek, I want this to be automated, in other words, ...
17
votes
7answers
26k views

Is there a way to enable WiFi-tethering without root access?

Is there a way for WiFi-tethering without root access. I mean before Froyo. I have HTC Hero 2.1, and frankly, I don't want to root it for security reasons.
17
votes
7answers
37k views

Access Android device's file system over Bluetooth or Wi-Fi

I'm looking for a way to access the file system of an Android device (Nexus S) wirelessly, as its USB port has become unfit for anything but charging. Ideally, I'd like the same functionality as ...
17
votes
5answers
21k views

Turn off vibration for 'Sign in to WiFi network' notification

Since the Android 6.0 update on Nexus 5, everytime I get the notification 'Sign in to WiFi network' the phone vibrates. Any idea where I can turn this off while keeping the vibration for calls, SMS, ...
16
votes
9answers
89k views

Can Android switch to the Wireless AP with the strongest signal

I have a Wireless Router (D-Link) in my living room and a repeater (TP-Link WA750RE) in my kitchen. Sometimes when I go to the kitchen and back into the living room, my Nexus 5 (Android version 4.4.3) ...
16
votes
3answers
51k views

How do I connect to a wifi ap and 3g network simultaneously?

When I turn wifi on my 3g connection shuts down, which is fine in most cases however I need to connect to a LAN at work that is not connected to the internet and I'd prefer not to lose my data ...
16
votes
1answer
3k views

SSH (and SFTP) server on Android discoverable through avahi/bonjour

I would like for my Android device (a Samsung Galaxy) to be discoverable through avahi/bonjour when it is connected to a WiFi network, and then to be able to access its filesystem via SSH (SFTP). For ...
14
votes
2answers
50k views

How to copy wireless networks list from one android device to another?

I got a very long list of free hotspots and friends/family networks on my phone. Recently I bought a tablet and I'm trying to find a way to copy the wireless manager list to this new device. Any idea ...
14
votes
3answers
31k 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 ...
14
votes
4answers
14k views

Moved out with my router : Location services don't get it

So I moved out, carrying along my WiFi router. I set it up at my new place, but now, every time I use a location service, it recognizes my router and places me at my old address... Any way I can force ...
14
votes
2answers
128k views

My phone stopped remembering wifi passwords!

For some reason that completely escaped me, this here Samsung S3 mini stopped connecting automatically to my home network, always requiring me to re-type the wifi password. Since then, I noticed that ...
14
votes
1answer
2k views

Force all WiFi traffic through VPN?

Is there any way to force Android to route all (but only) public WiFi traffic through a PPTP VPN? My phone basically has three connectivity scenarios: AT&T's HSPA+ or LTE. I don't want to use a ...
13
votes
4answers
14k 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 ...
13
votes
5answers
61k views

How to set HTTP proxy and proxy authentication credentials in wifi?

I have set up wifi, I installed HTTP proxy and configured it, but where I put the proxy authentication credentials?
13
votes
5answers
69k views

How do I find out what wifi chipset my phone has?

I've got LG Optimus One phone (model LG-P500h). How do I find out what wifi chipset my phone has? Is there a general mechanism that will work for all phones?
13
votes
5answers
40k views

Is it possible to force an app to use cellular data instead of WiFi? [duplicate]

Our local office provides free public WiFi for phones and tablets, but blocks access in ways that means that some applications (like WhatsApp) are unable to connect. Is there any way to configure ...
12
votes
11answers
54k views

How to transfer files over WiFi without a hotspot?

I'm looking for a way to transfer files between an Android phone (Samsung Galaxy S2, rooted) and any computer system I may need to interact with (this means preinstalled software on the computer, ...
12
votes
4answers
22k views

Is there any WEP cracking application available for android?

Is there any WEP cracking application available for android? If not is WEP cracking technically possible with the API's and hardware available on your average android phone? This is a purely ...