I've searched throughout the web and I find people reporting this occasionally but no solution published.
When on 4G LTE (everything works fine on WI-FI) my Samsung Galaxy S3 recently started not connecting to web sites recently through many apps:
- Internet browser: returning HTTP Error 504 Gateway Timeout
- Youtube - Can browse channels but can't watch videos - Connection Failed
- Weather widget - can't search locations.
- Netflix - Can browse but can't watch videos
- Play - can browse apps but can't download anything.
All this time it does show a strong 4G LTE signal. Phone can still make and receive calls and texts. When attempting to access any internet the arrow indicators blink suggesting that it is trying.
I tried everything including a complete hard reset of the phone to factory settings. No change.
I got on the call with tech support. We did safe mode, re-preovision, remove/insert sim, etc. No significant improvement. Occasionally a website would start working. Once it started working it tended to stay working, even after the phone was restarted.
I went in to the store to get a new SIM card. No change. They thought the phone was bad and said that the new SIM is good and would work on any phone. When I got home I put the new SIM into my old RAZR and I got the exact same errors - so even though I got a new SIM card the problems followed the SIM card to another phone. I tried it again and moved the SIM card to my wife's Note 2. The Note 2 wouldn't even connect to 4G LTE. Now here's the kicker (or some completely unrelated random bad luck) when I put my wife's SIM back into her Note, it STILL wouldn't connect to 4G LTE.
After 40 minutes on the phone with support again, we were stuck and they recommended switching out the SIM on the Note 2. There was nothing they could do to fix the S3 and recommended getting another SIM card. Well about an hour later the Note started connecting to 4G again and appears to be working normally.
But my S3 is still not working on the internet. I also enabled the hotspot on the phone and tried using the browser from my laptop. Same problems appeared on the laptop - the sites that worked on the phone continued to work on the computer but all other sites gave an Error 504 when trying to browse to them. It's been nearly 6 days now that the S3 has had limited internet. My three other smartphone lines on the same account were all working fine (except for the Note 2 after my SIM switch.)
I will make another run to the store today but I wanted to know if anybody has experienced this recently and how it ended up getting fixed or if the problem got fixed by itself.