I am developing an app with React Native. Thus far, Ive been testing on a iPhone, but naturally I want to test on an android device as well. I borrowed a OnePlus 6t, but I am having troubles connecting this device to my Macbook (pro 16" 2019). I've enabled developer mode and switched USB debugging on. Still my Mac does not recognize the device, even when I do adb devices. Any experience with this?
One sidenote is that the USB-C socket of the phone seems to be worn out, since my cable will not "click" into the device. The device is charging when sticking the cable in the phone though, so there seems to be some kind of connection.
Thanks for thinking along!
I asked for the original cable, and using that it worked. Seems that USB-C is not as universal as I thought.
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My MacBook computer battery is broken and somehow it has not enough power to power device by usb-c adapter so I cannot connect anything and only have to use android emulator. But I need to debug on real device while testing some ocr sdk that obviously don't want to recognize anything in android emulator virtual scene. I asked other question about that but still I am puzzled by this inability to use WIFI for usb debugging because sdk runs fine on my phone but to debug using fabric and APK deployment is really horrible dev experience and productivity.
Is there some way I can setup WIFI debugging without cable at all... Maybe I need to root my device but again how to do it without cable, it seems impossible either way. I feel in like in dead and but still asking question here. I have computer and phone but cannot connect them for debugging by wifi.
Afraid I don't have an easy wireless solution. The closest thing I could find is that android wearables may have a debug over bluetooth feature, but it's built to route through another (wired) android device.
There is likely a feasible wired solution though- you can hook the device to a powered hub and the hub to the computer.
You could also use an adapter of sorts. They were built for printers and such before everything came with wifi and could get a proper wireless setup going without either side realizing they aren't directly connected over USB (OS still knows that some funky usb drivers are loaded and a separate application may need to run to connect), but again more hardware. A decent Wireless "USB Device Server" seems to run ~$100 while wired ones are cheaper, but not as cheap as a powered usb hub.
If you have another machine, you can use it to enable wireless debugging on your Android phone. See https://developer.android.com/studio/command-line/adb#wireless. Once wireless debugging is enabled, you can connect to it from your Mac without using USB. You still need USB for enabling wireless debugging though, but you can do it from a different machine. This should work on all Android phones, root is not required.
Update [2021]:
Things have developed since this question was asked. WiFi Debugging is a first class option now on newer devices. See https://developer.android.com/studio/run/device.html#wireless for details.
I have a Samsung Galaxy Tab A 10.1" that I want to use as a second monitor with my PC. Spacedesk works great for my needs so long as I'm on a network with lots of bandwidth -- but more frequently I want to use second-monitor functionality in other environments, e.g. at a coffee shop, where the number of users bogs down network traffic and makes Spacedesk unacceptably slow.
Spacedesk doesn't natively support a wired connection, but for those who want one they suggest using USB tethering, presumably so both devices are on the same network. Problem is, my tablet is the Wifi-only version, so USB tethering isn't enabled. I rooted the device and used adb to run the commands enabling USB tethering as an option. It didn't take - the option never appeared under Settings / Connections. Then I installed ClockworkMod Tether as a 3rd party usb tether app. The PC tether software said it connected successfully to the tablet, but Spacedesk couldn't connect. Next I tried "gnirehtet", a reverse-tethering app. Got it working fine, but again Spacedesk on the tablet couldn't find the Spacedesk server on the PC.
How can I get both devices to be on the same network, without an intermediate connection (e.g. a router), in a way that preserves my PC's ability to connect to wifi, and that will allow Spacedesk to connect?
Turns out there's this thing called "Mobile Hotspot". Of course I couldn't use this on my tablet, as it had been disabled (thanks Samsung). But you can set it up on Windows easily -- in Windows 10 it's under Settings / Network & Internet / Mobile Hotspot. Connect your tablet to that hotspot and Spacedesk works like a charm.
Huge thanks to SpaceDesk customer support, who were extremely helpful in troubleshooting this apparently rather unusual situation. 5 stars both for the product, which I can now use anywhere, and the customer service.
Wifi tethering is possible with the tab A but only on android versions 6.x and below. it can be turned on via usb tethering enabling apps found in the app store that take you to the options in the settings of your device, these options appear to just be hidden in versions lower than 7 but removed in android 7 for whatever reason as the same apps just take you to an empty screen when used with 7.
If you have already upgraded to android 7.0 or above, and having spacedesk work with minimal lag is important to you, then I suggest you roll back youre tablet android version using Odin. This is what I've had to do after updating my tablet today (google it, there's plenty of guides out there)
TBH spacedesk is just poop over wifi. With USB you can watch video no problem
I tried the advice suggested here of using the mobile hotspot on my Windows 10 PC and used an old android tablet to create the extended screen to my PC using the suggested SpaceDesk app and it worked great! The download for Spacedesk for your Windows 10 PC is at https://spacedesk.net/ and the android app is in on the Google Playstore. Give it a try; it worked great for me.
I was connected to the internet over the LAN on my WIFI so I had difficulty in connecting the tablet (Samsung Galaxy Tab 3) over USB. My solution to this problem is disconnect your Laptop from the WIFI router from LAN cable as well as WIFI and use the tether option in tablet and connect it to the laptop and now it will work. Now for using the inter connect your Wi-Fi or LAN cable after this.
I tested the #Twiffy solution "Windows 10 hotspot" and worked for me. I disabled the tablet (Galaxy Tab A7) WiFi and the lag ended.
I've made all the steps to become a developer on the cellphone, and also enabled what is necessary.
I also have already used this samsung galaxy to debug on another computer, and worked just fine.
However my Mac (10.7 El Capitan) does not even recognize my cellphone when I plug on the USB.
So, I've looked for in a lot of sites to install the necessary drivers for the usb port. However, all of them recommend to install SmartSwitch or Kies3, which I've also downloaded.
But, both need the cellphone connected on the computer to install all the drivers I need. But, I can't even make my Mac recognize my samsung S6 edge.
Does anyone had also the same problem? What should I do to make this work? Debugging using the emulator does not solve my problem! I need to debug on the real device.
Do not to use the fast charge cord for this purpose. Buy another android cord to debug
When I run adb devices there are no devices showing as connected. My device is a LG Optimus Exceed 2 running 4.4.2
There are many of these posts around, so here's what I've done:
I'm using the cord that came with the phone. It charges and tries to sync photos, so it isn't an issue here. Switching usb ports and trying a powered usb hub doesn't affect it either.
I've added the vendor id (0x1004) to ~/.android/adb_usb.ini
Restarted and unplugged any combination of things you can think of
USB Debugging is on. And has been restarted. Same with Unknown sources.
I have never used EasyTether, nor is it installed anywhere on my computer.
Updated adb, updated my sdk.
Restarted adb server
Tried installing LG's drivers: http://www.lg.com/us/support-mobile/lg-VS450PP (They say they don't support Mac S/W upgrade, yet they have a package to install. No help there)
I have a Nexus S running 4.1 that works, and an old LG phone running Gingerbread that connect.
Any wizards out there who've already struggled with this who have advice?
I tried all of the connection types (charge, MTP, PTP) but perhaps not "Internet Connnection, modem"? You can change it by pulling down the system-wide drop down menu and touching "USB connection".
This is how I fixed it, but I thought I'd tried this already, so I can't guarantee it wasn't this in conjunction with one of the things done above.
PTP seemed to do the trick. Never had to do that on any other device...
I had the exact same problem. Selectin Internet Connection and then Ethernet as the USB connection type fixed it and everything is working as expected now.
I know this sounds like a stupid answer, but the same thing happened to me. It turns out the micro USB cord was just bad - which is weird, because it still charged the phone perfectly fine. After testing the bad cable unsuccessfully on a phone that had been recognized on my mac before, I switched to a different micro USB cable, and that made all the difference.
This is late in the game but I had an additional step to all the other suggestions. The phone was showing up in the System Profiler after I switched the usb mode to 'MTP' mode, but I didn't see any usb tethering options. After adding the phone's vendor ID to the usb ini file, enabling the developer and usb debugging, killing and restarting adb, I still didn't see my device in adb devices.
I finally had to download the Mac driver for the phone directly from LG.com. After installing and rebooting on the computer, the device showed up in adb devices.
I'm just starting on some development using the android accessory protocol. I have sourced a starters kit (microchip) to get familiar with the environment. I should note that I' have a solid background in embedded C, but not really in Android / Java.
The kit connects using USB, so I have configured my phone to use ADB over Wifi, which works great. I compile the app and can debug in the phone just fine. However, it will not recognize when the accessory is connected to the USB port. When I stop the wireless ADB, the app will recognize the accessory just fine and works as it should.
I have a hard time finding out whether this is expected behavior or not, but as it would stop any debugging on an app communicating with a USB accessory I doubt it and suspect I am doing something wrong.
I use a Galaxy S3 I9300 rooted, and microchip's Accessory Development Starters Kit and provided samples.
ADB-over-wifi does disconnect after an accessory is connected. To mediate that, switch the phone to accessory mode and after that connect the ADB-over-wifi. That way eclipse can reconnect to the debugging session.
Another way is to run a shell a shell script in the background that will infinitely connect the ADB-over-wifi.
I did not find more elegant ways to solve this problem.
Ok. it seems to be related to the "USB Debugging" option in the developer options. When I disable it, it works as expected.
I have not been able to try it on lots of different phones but on the 2 I have access to this seems to be consistent (Galaxy S3 and HTC One).
I can't find any specifics on this behavior on the net though.