Galaxy S7 Edge wifi upload issue

[ungairis]

Hi everyone,

I've recently got a S7 edge. I did factory reset. I flashed the newest firmware with odin so the device should be okay. I got the S7 from my brother and he had no wifi issue with it. The apps didn't work properly with wifi and disabled cellular data. I installed the Speedtest app by Ookla and I learnt what's the problem with my apps. I have simply no upload speed on wifi. I have an older Galaxy S5 which is just working fine. There is healthy upload speed with it. So this is not a router related problem. Any idea? Thanks in advance!

 

[SpookDroid]

Since you flashed software via ODIN you can't guarantee that the phone is 'OK'. I suggest to try factory resetting it (if still possible, haven't flashed in a while so not sure if doing so wipes the recovery partition) and testing WiFi out. If that still fails, check in different networks. Might be a 'problem' with your router (some routers needed a patch installed to play nice with some Samsung phones, or some units would have issues with WiFi in certain channels).

 

[ungairis]

Since you flashed software via ODIN you can't guarantee that the phone is 'OK'. I suggest to try factory resetting it (if still possible, haven't flashed in a while so not sure if doing so wipes the recovery partition) and testing WiFi out. If that still fails, check in different networks. Might be a 'problem' with your router (some routers needed a patch installed to play nice with some Samsung phones, or some units would have issues with WiFi in certain channels).

If this was a wifi channel problem the download speed would be affected too, wouldn't it? I did the odin flash after a few factory reset, trying a different router and even a hard reset. Nothing helped.

 

[SpookDroid]

Not necessarily. Channels still have two 'bands' for upload and download. But if you've already tried a different router then the issue seems to be with your phone. I'd still suggest a factory reset and NOT flashing anything with ODIN (again, not sure that's possible). Run the phone with the factory software, untouched. If it fails then, most likely it's a chipset issue. I'd try running in Safe Mode just in case and rule out 3rd party apps causing an issue (and turn off BT...)

 

[ungairis]

Not necessarily. Channels still have two 'bands' for upload and download. But if you've already tried a different router then the issue seems to be with your phone. I'd still suggest a factory reset and NOT flashing anything with ODIN (again, not sure that's possible). Run the phone with the factory software, untouched. If it fails then, most likely it's a chipset issue. I'd try running in Safe Mode just in case and rule out 3rd party apps causing an issue (and turn off BT...)

There is a new addition to the issue. I found a story with a similar issue on the net. I subscribed to a NordVPN trial. And...voila...I have upload speed on wifi. So I asked my internet provider to enabling the bridge mode (there is no such option in their current firmware) in their crappy technicolor 7200 modem. I will test out my old linksys wrt 54 gl and I if it worked without vpn, I would buy a decent router. Interesting that my mother's router can produce the same thing. I'm waiting for their answer. 48 hours...and they will be examine my complain.