Xperia S Mobile Data Network Connection Not Working

[#1]

I have been experiencing this for months already. I am honestly not sure how and when this problem started but I am sure that when I bought this phone last March/April 2012, my data  network was working. And then an update became available (not the ICS update), problems started to happen. Data network became limited to certain apps only. And then the ICS update happened. 98% if the time, the data network never worked. I only get notifications, for example from Facebook,  but when I click on the notification, it always never gets to show me what the notification was about.

I asked my provider about this a couple of times so they can check if their services are running properly and they always confirmed that this service on my account is working well. And I doubt they will disable this or what since I've been using this service since forever! Unless there are any problems with their services, which I am not aware of...

Now, contacting Sony directly seems to be my next (if not my last) best option.

Help, anyone? I'd like to be able to use all features of my phone everywhere and anytime but this problem is preventing me to do so. I love my phone but so far, it's not loving me back.

Would appreciate any assistance on this.

Thanks.

[Johan]

Is data enabled?

Menu > Settings > Wireless & networks > Mobile networks > Data enabled.

Have you tried another SIM card?

[#3]

Yes. I've been using my data connection since my Xperia X10. When I switched to S, it was also working until after a few months.

[#4]

Yes, data is enabled. I haven't tried another sim. I will do so when a spare sim is available. But I'm doubtful this is the problem since, as I've mentioned earlier, I have successfully used this after I bought it.

[MarlonUk1]

how about this. http://www.coolbuster.net/2010/07/how-to-setup-smart-mobile-internet.html

[MarlonUk1]

To enjoy internet browsing, download services, and send mms photos & videos, follow these easy steps to configure your phone:

STEP 1: Text SET to 211
STEP 2: An SMS will be sent to you for the instructions along with the settings. Save the configuration settings.
STEP 3: Key in 1234 as the PIN when prompted

.http://go.smart.com.ph/internet/article/view/312/

[MarlonUk1]

make sure you have at least P30.00 worth of load.:smileywink:

[MarlonUk1]

go to access points in the settings, select SMART Internet something simillar, not SMART MMS.

[#9]

Hi Nolramlb,

Thanks for your suggestions but I've tried everything you said above plus I am a postpaid subsricber with an unlimited data plan -- which is currently being wasted.

[MarlonUk1]

I used to be a smart user, and I've never had problems with setting up internet connection since the settings are stored in the sim. have you tried changing your network settings to just WCDMA?

[#11]

Actually, everything was working well with my data connection that's why I switched to an unlimited data plan. It was, I think, after my first ever update on my Xperia S that problems started to happen - I could not use any browser but some apps were working. This was before the ICS upgrade. And then after the ICS upgrade, I'm only able to get notifications that I have emails, updates, facebook and twitter notifications, etc. That's as far as it goes. I won't be able to view those notifications any longer. I've also tried setting it to just WCDMA. Didn't work.