dimanche 23 août 2015

S3 wifi not working



(repost this to this section, adviced from xda assist)
I just purchased second-handed Samsung Galaxy SIII GT-I9300 (international ver) to replace my old Samsung Galaxy Mini (GT-S5770). I purchased this cuz the price tag on one of local stores is just too tempting me to buy one, plus, giving me free true leather phone case! (though my target was Acer Liquid Z410, but not available on local stores and i dont know how to buy online as well)

The phone conditions, well, do have some minor scratches at the sides but the previous owner was middle-age man, and im not so picky with that detail.

The phone is great, well, except, the WiFi isnt in good condition in normal uses. (means, i can still uses them. details in below)

The S3 properties,
Android 4.3
International ver, GT-I9300
16 GB ver (which i found out some cases with unbootable S3, with 16GB ver only)
unroot
all related to network setting (includes mobile network, Bluetooth network, WiFi) is in default

The problem is, the WiFi.
The phone does detects WiFi hotspots or access points from far (in fact, it can detect my neighbour's home wifi even though is quite far, well, maybe around 20-30m, well, the signal was weak though).
SInce my home wifi is hidden, i pre-set the wifi. but, it wont even connect or even detect my wifi. My Internet TV with WiFI Direct do detected though (no internet connection since it wont host internet to devices who connect to the TV)
But, when i place my S3 like below 700cm range, my S3 detects my wifi and connects like normal devices. But when it get like further than 1m, the WiFi does not receives any data at all and after a while, the WiFi disconnected.

After i bought this phone, i hard factory reset my S3 (before reset, i didnt test WiFi and also from my uncle's advice cuz my phone seems a bit slow, well, he used to have S3). I didnt had a chance to test WiFi until i got home and tried to connect my WiFi.

I've tried many method i found online, (again, the WiFi only works if i put my S3 side by side with the access point/s)
Reboot router (I always reboot them cuz the router sometimes bugging) = not working.
Forget the network in S3 and preset. = not working
Tied with static IP address (connecting to my hidden network)(with google DNS) = not working
Enabled unhidden, open wifi profile on my router, try connect. = not working)
Connect to my TV's WIFi with WPA security = not working (tried to connect but just fails)
Tried *#0011#, Wifi, turn off power saving = not working

Things i havent tried,
reset again the S3
revert to factory firmware (actually, i tried but Kies 3 just wont work at all... it said that the device cannto be initiated or similar... so, the S3 didnt do anything)
using Odin to revert to stock factory rom
using Odin to update to unofficial kitkat rom


before im going to use Odin, which i dont ever done before, do you think that reset this phone to factory setting will fix this problem?



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