'Internet Unavailable' Wifi problem - G4 Q&A, Help & Troubleshooting

Yesterday my phone started losing internet via wifi. yet my wife's phone, and my laptop use it fine.
It drops away completely a lot, as it does, the phone says 'internet unavailable via [wifi name]'
I tried going to Apps>System>Wifi, force stopping it and clearing data. that didn't fix it (The phone still remembered my wifi passwords, so it couldn't have cleared everything!)
Any more tips what I could try, before a factory reset?
Any help appreciated!
Thanks

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Keeps disconnecting from cellular network

Hi, my phone keeps losing connection from cellular network.. I've had my phone for about a week and I keep disconnecting from cellular network, or sometimes when I'm picking up a call from home the reception is really bad this has never happened to me from my previous phone, Apple iPhone 3G
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I had this issue as well. I know you won't like what I did, but it's the only way that Samsung knew how to fix the issue (I had tried things like disabling the LTE antenna to no avail). I did a complete factory reset, and it helped. What Sprint has you do is go into Settings, then Backup and Reset, then Factory data reset. What I did, however, was using Odin to flash the PALEN firmware to my phone, then do a factory reset as Sprint said above (using Odin will not erase data), and lastly doing OTA updates until I got back to LI3. I will post a video from QBKing below on how to do this. From there, I reinstalled all of my apps and re-synced my music.
I did this about two weeks ago. Since then, my phone has only disconnected from the network once, which it did so to switch from 3G to Wi-Fi.
Video:
http://www.youtube.com/watch?feature=player_embedded&v=ypmqJbZqOaU
This video shows you how to unroot your device if it is already rooted. However, you can use this video to know how to flash back to PALEN (just ignore the part about unrooting at the beginning).
Good luck!!
Disclaimer: I am not responsible for any loss of data.

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Wifi data stops after a while but strong signal

Hello,
I'm getting very annoyed at my phone. If I pick it up to check apps there is no connection. I have to turn wifi off and on to get data again. I've tried deleting and recreating the wifi profile and tried compatability mode but to difference.
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I have to restart my phone every time to get mobile data turned back ON. The phone say, no internet connection after switching from Wifi. Anyone experiencing similar issue ?
Never had this issue here, but try to reset all settings(not factory settings). Try first with 'Reset Wi-Fi, mobile & Bluetooth' , if doesn't help try with 'Reset all settings' .
This usually solve that kind of issues.
Good luck!

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