Android Question Designer/Deployment/Debugging Over USB - Unreliability

I'm testing on a S4, too with WIN8.1. No problems so far but I'm testing via WiFi. I just plugged in my USB cable for some compiles but I cannot see a problem. Take a look in the WIN8's logs if there are general USB connection problems.

Did you see this thread: http://www.b4x.com/android/forum/threads/fail-to-connect-b4a-to-phone-by-usb-cable.42520/

I did not install any drivers from Samsung, except KIES for an update. Maybe the drivers came with it. Maybe there is a newer version coming with KIES.

since Vista or Win7 you should be able to make a hotspot from your laptop which should allow you to connect to the S4 via wireless network connection (bridge)

you could try another (short) usb cable, I've seen a lot of complaints about the cables.

Note that USB connection (unlike B4A-Bridge) is managed by ADB, a tool from Android SDK. From my experience USB debugging is usually very reliable. You can try Tools - Kill ADB server if you encounter any issue. It might help.

For Samsung don't use driver include into KIES program, you need to install special samsung driver.
I had the same problem, here is Erel's solution: http://www.b4x.com/android/forum/th...-b4a-to-phone-by-usb-cable.42520/#post-257210

Sergio

I believe I had Samsung USB driver ver 1.5.33.0 which is later than the one above (1.3.1500.0). I tried both and found no difference between them.... the problems persist. Both the Android ADB interface (2.11.70) and the driver for the Samsung Mobile Composite Device are the latest available.

Eventually I am drawn to the conclusion that the S4 is very fussy about USB leads. I bought some cheap ones a while ago and although they were fine with other devices when I connected the S4 some would not connect as a device at all. I have a theory that when an S4 is connected via USB that it draws all it's power from that connection. If the voltage drop across a substandard USB lead is too much it will perform unexpectedly. A charge app I use says the S4 discharges at around 450mA when active so if the device is soley reliant on USB power when connected a standard USB2 port (500mA max) might struggle to support the higher demands during operations such as r/w. Incidently the misbehaviour is not confined to cheap leads.... an nice blue Belkin one I purchased also does the same thing.

Using the B4A bridge over a a Peer-to-Peer network with seems to be the only way ahead. Unfortunately in Win 8.1 the prompts to set this up have been removed from the Network & Sharing centre so...... Idiots Guide.....

Check your adapter is capable. Open a command prompt as an administrator and execute:

If the string: "Hosted network supported=Yes" Is present then you are good to begin.

The following two batch files will switch the Peer2Peer capability on/off. You should change the filenames to .bat and edit the SSID and password to suit your purposes. The B4A bridge should then work perfectly over WiFi in Peer2Peer mode.

I was the LAST version of KIES (but I don't know driver version) and it don't worked !!
Then I have change with 1.3.1500.0 version and now it works very well.

Sergio

Just took a look for my S4 ADB drivers. I have 2.11.9.0 (April, 3rd 2014). I did some tests with it (original Samsung cable). No probs. I kicked the the newer version by chance because I wanted to get rid of the crapy KIES.

I am not drawing any conclusions over USB or ADB driver versions in Windows 7/8/8.1 the ADB driver seems to be automaticly updated by Windows and different driver versions are found in different Windows versions.

In the previous version of Kies (not Kies3) a USB driver was included in the Kies package so having installed it you found the Kies package AND the USB driver as separate uninstall options. With Kies 3 it is all one install/uninstall package.