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Questions tagged [usb]

questions regarding connecting an Android device via USB to e.g. a computer's USB interface

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125
votes
7answers
194k views

How to set up reverse tethering over USB?

My HTC G2 phone is rooted and running Cyanogenmod 7 I don't have a data plan. Sometimes I want to connect the phone to the Internet when there isn't Wi-Fi, to update Market apps, backup SMS messages ...
47
votes
3answers
93k views

Android phone “charging slowly”: How to make it faster

When I put my Android device to charge, the lock screen says "Charging slowly": Is it a particular software setting that tells Android to charge slowly? How to make Android charge fast?
37
votes
4answers
219k 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 ...
36
votes
15answers
84k views

ADB constantly disconnects, shows device offline

I'm not 100% sure if this should go here or the main Stack Overflow, but I decided to go with this area in hope I might catch someone with more specific experience with a similar problem. I have a ...
33
votes
10answers
135k views

Why is charging from computer using USB slower than using an outlet?

And what is roughly the ratio of the charging speed in USB vs charger? My phone is Samsung Galaxy S, if that matters.
30
votes
8answers
301k views

Use an Android tablet as a Wacom drawing tablet for a PC?

Since a nice Wacom tablet is a bit pricey, especially for someone like me who doesn't do much graphic editing, I was wondering if it is possible to use a tablet (i.e. my Nexus 7) as a Wacom-esque ...
29
votes
4answers
46k views

Is there a way to see the device's screen *live* on PC, through ADB? [duplicate]

I am a vlogger and after getting HTC Desire HD, found out its camera was all I ever needed. However, I usually have to see myself while recording video, to control my facial expressions, and with a ...
28
votes
10answers
58k 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?
27
votes
4answers
26k views

What is USB debugging? Can I keep it ON forever?

Sometimes I need to transfer some music from my PC to my Galaxy S2 and must always activate USB debugging. Then I think, can I keep it ON forever? I mean, Keep it ON for ever can give me a problem (...
27
votes
9answers
76k views

Drive letter for MTP connection under Windows

In Android 3 the connection to PC as Mass Storage Controller feature was removed. Is there a way to access MTP-mounted phone as a drive letter? I want standard file manager programs (e.g. Total ...
24
votes
2answers
22k views

Can you connect USB devices to an Android phone?

I have an HTC Desire and would like to connect USB devices to it, for example an external USB thumb drive to transfer files or a USB keyboard. Is this at all possible?
23
votes
1answer
88k views

Are there USB settings in CyanogenMod 10? If so, where?

When I shut off USB Debugging in the developer settings I get a USB Mass Storage prompt upon connecting the device to my computer. However, for the life of me I can't find a place to shut off this ...
22
votes
6answers
275k views

Unable to connect Galaxy S3 to PC via USB

I've had my Galaxy S3 for a few months now, and have always been able to connect to my PC via USB. A few days ago, it suddenly stopped working. I've found many other Android.SE threads, but none have ...
22
votes
5answers
70k views

What's the difference between “sd card” and “usb storage”?

Under Settings -> Storage, I see entries for both "SD card" and "USB storage". What's the difference? What should I be using each of those for? In addition, how can I control what data goes where? ...
21
votes
10answers
37k views

Disable USB charging

For some reasons not related to the battery life, I need to disable the battery charging when a USB host is connected to my phone (a rooted Nexus 4). Taking a look around on the internet (link1, link2)...
20
votes
16answers
101k views

Samsung Galaxy S3 not connecting via USB

Since about a week, my S3 doesn't connect anymore via usb to any computer. I don't think it's driver related as it was working before and I didn't change anything on the computers. It now runs Jelly ...
20
votes
8answers
62k views

Mount Android device directly in Mac OS X Finder

I have a Nexus 5 and I have to use Android File Transfert to copy/check my files. It's working but it's not enough for me. For example, if I want to see my picture, there is only a list view, no ...
20
votes
2answers
21k views

Can you read a USB flash drive from an Android phone?

I have a Samsung Galaxy S (i9000) with Android 2.1. I am wondering if it can read a USB flash drive. It will be really useful to copy files across USB drives so you don't have to carry laptops around....
19
votes
6answers
98k views

Using Droid as a computer microphone via USB?

Is it possible to use my Droid as a computer microphone (for Skype, Teamspeak, etc) via the USB cord? If not, does anyone know of a Teamspeak client app? Any help would be appreciated.
18
votes
9answers
204k views

“MTP USB Device” driver error (screenshot) when connecting my Galaxy S to my PC in Kies mode — How can I resolve this problem?

I always got this error when trying to connect my Galaxy S to my PC in Kies mode. I can connect it as "Mass storage" with no problem. But I need to connect with Kies mode to get 2.2 (froyo), but I ...
18
votes
2answers
10k views

Charging over USB can be harmful?

Considering that charging over USB can take around 5 hours (to only 1-2 hours it would take from the wall mounted plug), can it be harmful for the smartphone battery if it's always charged from USB?
18
votes
2answers
6k views

Android USB reverse tethering: How to fool the apps

USB reverse tethering = Cellphone gets network connection from PC via USB. I know how to do USB reverse tethering except for one problem: Many Android apps will check network connection using the ...
17
votes
3answers
90k views

Open command prompt to access folders of a USB connected Android phone

If I connect a Phone with my Windows 7 machine via USB, it shows up in explorer with a name e.g. Nexus 5. How can I open a command prompt and change directory to this device. For lettered drives, I ...
16
votes
3answers
17k views

Are Android chargers universal in terms of power (Voltage, amperage)?

I would like to buy a car charger, wall charger and USB cables for my Samsung Intercept. However, $20 for a charger seems expensive and I want to avoid getting ripped off. The Samsung Intercept Manual ...
16
votes
1answer
474 views

What's the name of the protocol that android devices use in debug mode?

I have a strange Android prototype what we got from a customer. Said customer has forgotten about it, and I'm now fiddling with it to see if I can make it do anything interesting. The device appears ...
15
votes
3answers
62k views

Is it possible to boot an Android phone from a USB drive?

Is there any way to boot an Android phone* from a bus-powered USB drive**? If so, what are the steps to achieve this? * E.g. one with USB OTG functionality. ** E.g. a flash drive.
15
votes
7answers
24k views

Can a device pretend to be a USB keyboard?

What I'm looking for: Is there a way to make the device claim to be a keyboard/HID when plugged into a USB port and "type in" the contents of the clipboard? More accurately; What would it take to ...
15
votes
2answers
123k views

My screen got broken, how to see on the computer what I'm doing in my device?

My Android device screen got broken and I can't see what I'm doing. That's the only wrong thing with my device, the rest is apparently working OK. Is there any way to send my device screen to my ...
14
votes
0answers
15k views

Use USB as network access for an Android device (reverse tethering)? [duplicate]

Possible Duplicate: How to set up reverse tethering over USB? Note I'm not talking about getting my PC network access through my Android device, I'm talking the opposite. I sit in a dead spot ...
13
votes
3answers
23k views

How do I disable the USB Connected notification?

Every time I plug in my phone, I get a notification for USB connected. Is there any way to disable the notification, without disabling USB debugging? Phone: LG Optimus S Carrier: Sprint Android: 2.2, ...
12
votes
7answers
1k views

Can I turn my Android device into a webcam?

If so, how? Could it be implemented via a USB, Bluetooth or Wi-Fi connection?
12
votes
6answers
8k views

Stream Sound from Ubuntu to Android

I got tired of replugging my headset between a desktop and Android when someone calls me. Is there a way to stream sound from Ubuntu (I use Pulseaudio) to Android phone over wifi or usb?
12
votes
1answer
9k views

Recursive adb pull

How to copy a whole directory (and all of its content recursively) over USB with adb pull? For instance to backup the SD card. Attempt: $ adb pull /sdcard backup failed to copy '/sdcard' to 'backup':...
12
votes
11answers
128k views

Galaxy S3 is unable to transfer files over USB: “USB device not recognized”

I have Galaxy S3 with baseband version I9300XXLFB and I'm having problems when it is connected to the PC. I cannot transfer or retrieve any files or data over USB. When I plug it in to my PC, it ...
11
votes
3answers
131k views

Connect an Android tablet to ethernet

I use tablet with Android in a professional environment and the it department doesn't accept to install wifi. My tablet need to synchronise with CSV file on a LAN share. I'm looking for solutions. ...
11
votes
1answer
54k views

My Mac doesn't recognize my Galaxy S2 through USB

My Snow Leopard Mac doesn't recognize my Samsung Galaxy S2 for file transfer over USB, and it's starting to drive me nuts. I've tried the following: Connect Storage to PC Settings > Wireless and ...
11
votes
4answers
27k views

USB transfer speed ridiculously slow

My Android connection to my computer is ridiculously slow. Just previous to this, I used Banshee to transfer some songs to my Android, and it took nearly two hours two transfer 23 songs. (The problem ...
10
votes
3answers
15k views

Micro USB cables that only charge but no data, no mounting etc (Samsung Galaxy S)

Not all cables seem to be created equal but I've never got to the bottom of why so many (cheap) cables I try only charge - no data. Anyone know why? Certain pins not connecting? I do know that longer ...
9
votes
5answers
5k views

Is there a quick-fix for the Galaxy Nexus when it signals “charging” without beeing connected via USB?

My Galaxy Nexus goes into charging mode but when it isn't plugged in. The battery symbol then indicates a charging and when in suspend mode, the display turns on which drains battery rapidly. I am ...
9
votes
1answer
37k views

simultaneous USB-OTG and charging

I'm trying to charge my Nexus 7 2013 while using USB-OTG. I built the widely described Y-cable that does USB passthrough, grounds the sense pin (yellow lead) through a 100 k resistor, and connects ...
9
votes
2answers
5k views

How can I “right click” with a USB mouse on Android 3.1?

I've got a Logitech USB mouse and keyboard plugged into my Xoom, which is running Tiamat 1.4.4 kernel on top of Android 3.1. Both are recognized and provide input correctly, but I noticed that the ...
9
votes
3answers
2k views

Lots of “Input/output error” after connecting Samsung Galaxy S2 via USB

I'm trying to connect my Samsung Galaxy S2 (GT-9100, Android 2.3.4, I9100XXKI1) with my Linux box (Ubuntu 11.10 oneiric). I'm using the USB storage mode (Settings ➔ Wireless and network ➔ USB ...
8
votes
2answers
909 views

Other manufacturer's USB data cable for charging?

Is there any harm in using a USB data cable of any other phone (say LG) for charging up a Nexus S? "Any harm" here means will it adversely effect my battery life or the Nexus S device in any way?
8
votes
4answers
4k views

Can I recharge my Android smartphone at any USB port?

My girlfirend has just installed a new CD Player on her car that comes with a USB port to connect external devices(Flash card, external hard drive, etc). My question is based due the fact that I told ...
8
votes
1answer
31k views

How can I use my android GPS in my notebook through USB?

How can I use my Android GPS in my notebook through USB? My notebook doesn't have bluetooth, and the wireless is not working.
8
votes
1answer
114 views

Plugging phone into laptop charges laptop instead of phone

When I plug my father's Xiaomi 5X into my MacBook Pro, it shows up as a charger on the MacBook and I don't get the usual USB options on the phone. Tried it on two Macs with same result. Also tried my ...
8
votes
10answers
47k views

Galaxy S2 not recognized by computer

When I try to connect my Galaxy S2 device to my computer via USB, I get an error saying that the device has malfunctioned and is unrecognized. It appears as "Unknown device" in device manager. I'm ...
8
votes
3answers
70k views

How to use an Android device as bluetooth USB dongle?

Is there a way to use my android device as a bluetooth USB dongle without rooting it?
8
votes
2answers
4k views

Forcing higher USB current

The big problem: Like a lot of people, we are finding that our tablet does not maintain charge when connected to USB (PC or other device, not AC jack, we need data and charging simultaneously). What ...
8
votes
5answers
192k views

How to backup broken screen phone when USB debugging IS NOT enabled?

I dropped my Samsung S3. Now I cannot see anything, just a white screen with purple, black, and green lines. Before it blanked out, it wasn't recognizing my finger touch. Any idea on how or what to ...