Automatic switch between WLAN & 3G - Galaxy S III Q&A, Help & Troubleshooting

Hi,
I have noticed something quiet strange on my i9300: Whenever I lose WLAN connectivity and try to get online, as long as the WLAN is on, the i9300 says it cannot connect. It is only after I switch WLAN off, that the phone connects via 3G. I always thought the device would switch automatically? Seems not to be the case - or am I missing something??? Can you confirm or maybe tell me what setting I have to make in order to get that right?
thank you

Related

Keep wifi awake during standby?

I tried to enable this feature in KaiserTweak and although it says the wifi is still on, it often cuts out and then does not function properly until I do a soft reset. Does anyone have a solution for keeping the wifi on during standby that works a little better?
Thanks!
DCD3.2.2
Radio 3.42.02
Pocket Toolman has that feature and it works.
I tried it and it appeared to be working for awhile but I've noticed that if I press the power button to put the phone into the standby when I resume the wifi says it is still connected but is in fact no longer functioning. All my internet-enabled applications disconnect and the browser doesn't work. Even when I move out of range of my access point the same access points remain in the available networks list. If I turn my wifi on and off and try to connect to another access point it never connects and an error pops up saying so. The wifi doesn't work until I do a soft reset.
If I do NOT enable the option to keep wifi active during sleep then all my internet-enabled apps disconnect when the phone is put in standby but the wifi continues to work properly when I resume the phone from standby...
I am running phoneAlarm. Could this cause some issues with it?
My current profile is set as "Do not change" for wifi though so I wouldn't think it would cause any issues...

Wifi switching itself off

HI all i have a G2 Touch unlocked running Modaco's latest rom and i cannot get the wifi to stay on longer than about 5 seconds. It does search and find networks and i have managed to put in the key for my orange box but in settings/wireless controls/wifi the box stays ticked and underneath the words WIFI it says disconnected. Ive gone to advanced and told it to never switch from wifi and this is remembered but as i said it lasts all of 5 seconds then disconnects and i have only once seen the wifi icon in the task bar once for 5 secs then it went !! Any advice would be much appreciated thanks.
Maybe the signal's too weak and it looses connection?
No it doenst actually ever connect, the wifi program on the phone cuts out way before it ever finds a connection.
Just making sure you've done this:
Go to Settings -> Wireless Settings -> Wi-Fi settings -> Add WiFi network. Then enter the SSID and necessary security information. After all that turn WI-FI on
Thats what i do still just cuts off after maybe 5 secs !! I give up looks like i have a Hero that doesnt like wifi
Hmm, it seems that I had a similar issue, but I had enabled the Y5-Battery Saver and it continuously switched off my WIFI when I was in place where I had not been connected before. Just wondering if you have enabled the same app...
Yiannis
No i havent, but thanks for the suggestion

[Q] Wifi tries to connect on wakeup even when wifi off is this a 'feature?'

When I deliberately turn off wifi cos there is none available I can use at work, on wake up my phone seems to always drop the 3G connection and attempt to connect to wifi, if there is a known one nearby it says connected to ' xxx hotspot' this happens when wifi is off and the connection doesnt actually get made, it then takes a while for 3G to come back on again, this is annoying as I dont have instant on data as it faffs around trying to connect to wifi when it is meant to be off.
I have a Stock phone, UK Vodafone on XXELLA version.
Is there a setting I have missed as this is starting to really annoy me now.
I wish I had kept my SGS2 as the freezing issues I keep getting and now this wifi make this a poor performing phone for the costs/specs..

[Q] Wifi won't reconnect

Say I'm connected to my home wifi after I flash my phone. I'm connected and everything is great, I don't loose signal. Now I go to work, where I have the wifi profile saved in my phone. It wont connect automatically nor will it connect if i select it. This goes for all saved wireless profiles on my phone.
I've checked the tpyical settings under the wifi itself. (sleep/power settings)
I've tried different roms, all with clean/full whipe's prior to install.
CROM
Hyperdrive - seems to work but having issues with the rom itself performance wise.
ChaosROM
Under wifi > Advance, make sure Always Allow Scanning is enable else it wouldn't know you are within the range of a network

WiFi Reconnection issus

Anyone else having problems reconnecting to a WiFi connection, or even seeing WiFi SSIDs after disconnecting from WiFi?
This happens to me intermittently. I have 5 WiFi SSIDs in my house. 2.4G and 5G from the FIOS router, and the same from a WiFi access point on another floor at the other end of the house, and a Guest network from the AP. I can normally see all of them from any point in the house, as well as half a dozen from nearby neighbors. And my s9+ normally connects, automatically, to my primary 5G connection without any problem.
But occasionally, after being out and coming back home, or after the phone has been asleep for a while, it won' see any SSIDs. Not mine, or the neighbors. I've tried scanning for WiFi networks, turning WiFi off, waiting a few, and turning it back on, but it doesn't see anything, and won't connect. I've even tried manually inputting the name of one of my access points, but the phone won't find it.
Turn on WiFi automatically is on, WiFi power saving mode is off (although I've had the same issue with it turned on), Keep WiFi on during sleep was set to While charging. I've changed it to always, but it will be a while to see if that helps.
The only way I've found to get it to see WiFi networks again is to reboot the phone.
Oh, and other devices, including other Android phones, see all the SSIDs without issue.
Any thoughts or ideas?
I have te same issue here, I can't find a fix.
Mine will not connect to mobile date after I turn my wifi off. I have to reboot the phone in order to be able to make a call or use data. It all seemed to happen when a pop up came on to enable wifi calling. I can't figure out how to turn that off.
I don't have acupp1's issue with mobile data, but I seem to have resolved the WiFi connection issue by not letting the phone turn WiFi off during sleep. Haven't had the problem since I changed that setting.
I got the same problem since I rooted
Been trying to figure out if its a VENDOR Firmware problem or what. I do know that every developer says its a bug with the s9 when rooting. I've personally watch the live log on TWRP when flashing and seen where it mounts the VENDOR Firmware and then unmounted at the end. So it could possibly be a problem between TWRP and the s9 ROMs idk know exactly yet but I'm looking for a solution also. But I'm going to try what you did with your WiFi then report back here.

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