Total Commander

- test equipment
both routers has usb port with usb stick as a NAS
tcandroid350d-universal
tcandroidftp248


router 1 wifi 4
smartphone 1 android 10 test OK
smartphone 2 android 13 test OK


router 2 wifi 6 with 2.4G & 5G (both tested)
smartphone 1 android 10 test OK

smartphone 2 android 13 test OK only for upload
the issue is
- when i download i face the follow issue. After 3-5 seconds the bar of progress pause (not moving). I wait ... and when the transfer of files has done, the transfer window of wincmd dissapper. The files are OK.
- if i press "cancel" to stop the transfer, there is no stop. I press many times to stop
If .... i press the android home button and after 2 seconds or more return to totalcmd ... the transfer has terminate with an error massage
If .... i close the device screen durring transfer, when i open again the transfer has fail.

How big is the file you are trying to download?

Hi,
it is folders. From 1.5GB up to 20GB. For files up to few MB there is no issue. The transfer rate is from 50-60MB /sec. Write is 15-22MB. But the write can work with no problem, even with screen off

Thanks, I will test it. Btw, if you download to an SD card formatted with FAT32, the maximum supported size per file is 4GB-1 byte.

Hi,

- both routers have USB sticks with exfat

- both smartphones have only internal storage
smartphone 1 has ext4 format
smartphone 2 has f2fs format

new test with the tcandroidftp249

now the window with transfer progress bar freeze after 18-20 seconds. It has copy 3GB of data

I have tested with a 3GB file (large ZIP), but had no problems both uploading and downloading it. It could be your vendor-specific Android version putting the plugin in sleep mode after 15-20 seconds. Especially Chinese brand phones like Xiaomi or Huawei are extremely aggressive with app "optimizing". I'm starting a foreground service to prevent that, but it's not sufficient for some devices. Sometimes it helps to turn off the battery optimizer for the Totalcmd-FTP app in Android settings.

maybe my device has problem, maybe router has problem, maybe total commander has problem. The only sure is I don't have the answer to this.

what i know so far
- both devices has ALL the battery optimizations at OFF
- both devices advertise that they have almost pure android version

with router No2
last tests with android device No1 shows that when i close the screen, the transfer stops at once. With screen ON, there is no issue
i don't remember with tcandroidftp248 what it was going on. Maybe i haven't test it. I don't remember.

anyway, now i know all the possible combinations of what is going on. I can accept all the file transfer issues but it would be nice if everything worked properly

thanks