B4A Server IP OK, WIFI signal OK, no connection

[mc73]

Continuing from a previous post, here's what's going on:
I have b4a bridge showing the right server's IP, the signal of WIFI is full, yet, when I am trying to connect my device with PC (inside b4a) I receive a 'disconnected'. NOT all the time. Periodically, when I know from my service module that I use for other purposes, that I cannot connect my device with other devices.
Now, I suspect the router for causing an interruption of communication, with a 'stand-by' parameter which I haven't found yet, or even the specific device I am using is harmed or malfunctioning, but still I would like to know if this happened to anyone of you, and if you found anything to do with android OS causing this misbehavior. I know that sleep-mode does such things, but now I see it also happening with screen on, and perfect signal. It's like a mysterious sleep-mode, cause it's happening after an hour or more, with device active and screen on.
I know that perhaps this subject is not strictly related to b4a, yet, I imagine that there can always be a programming solution, be it in high-level, or in deep low-level, thus, I decided to post my question here, instead of a more generalized android forum. Thank you

 

[vb1992]

Do you tend to work on multiple projects opened at once?

 

[mc73]

Do you tend to work on multiple projects opened at once?

Nope. It's a behavior which I face not often. In reality I used b4a bridge as a 'testing' utility. It's just so weird: you see wifi on, you see your android having an IP, but nothing. This thing happens only after an hour or more passed and usually AFTER device 'wakes' from sleep.

 

[Erel]

Not sure why it happens. You can also try to "ping" your device from the command line. It is a good test for network problems.

 

[mc73]

Not sure why it happens. You can also try to "ping" your device from the command line. It is a good test for network problems.

tried that too, erel. no luck. its just strange. last night putting again a fixer and a cpu locker, gave improvement. still, nothing to celebrate about