[Galaxy S II General] ispartacus75:
Not sure what numbers I should give you so Im going to give you everything.

Current firmware version : PDA:LPD / PHONE:LPB / CSC:LPD (TMU)

Model number : GT-I9100

Android version : 4.0.3

Baseband version : I9100BVLPB

Kernel version : 3.0.15-I9100BVLPD-CL364024dpi@DELL126#3

Build number : IM74K.BVLPD

The phone is a UK SGS II, has not been rooted. It is running the official T-Mobile ICS Rom.

A couple of days ago I noticed an intermittent but significant loss of data. I could be in the same place for hours and it would happen, I could be on the move and it would happen. I decided to use Samsung Kies to see of there was a firmware upgrade and would reset the phone. This was done yesterday.

Today I have had lots of issues. Data again will come and go at will, the data icon in the taskbar will disappear intermittently. I have also lost SOME audio. By some I mean the following:

No audio from media via the speaker, either stored on the phone or over the internet. Tried BBC iPlayer, Youtube, Samsung Music Hub. Audio on the phone played through headphones was fine.

Ringtones work fine, but when I answer a call there is nothing from the earpiece. Switch to speaker and I can hear the caller.

Notification tones seem to be working fine.

No keypad tones from phone screen. I have checked to make sure that keypad tones is activated.

No 'system sounds'.

I have been into the menu for volumes (Menu, Settings, Sound, Volumes) and:

if I move the media slider I hear nothing (though I do get the 'harmful' warning when the slider is pushed all the way to the right

if I move the Ringtone Slider I can hear the ringtone playing back in relation to the slider position

if I move the Notification slider I can hear the notification tone playing back in relation to the slider position

if I move the System slider I hear nothing at all

The odd thing is that earlier in the day it was working, then part way through the afternoon I got nothing.

I have spoken to T-Mobile who were less than useless. First of all they said that T-Mobile did not recommend upgrading from Gingerbread to ICS, this is despite the rom in the phone being the official T-Mobile branded ICS rom that they released and I upgraded to through Samsung Kies. Their only answer was to take it back to the shop and they would send it away to be downgraded back to Gingerbread.

Is this likely to solve the problem? I am sceptical. The phone has been running fine on ICS for maybe a month, or since the official ICS rom was released anyway, its only in the past couple of days that I have had a problem.

I cant see it being a hardware issue as the speaker is obviously working for me to hear ringtones and be able to hold a phone call on speakerphone (though that doesnt rule out a hardware issue with the earpiece). I was originally thinking more a software conflict somewhere, so thats why I decided to try a reset and firmware upgrade. I have run it with just a couple of apps from Google Play, Facebook and Tunein Radio to be precise and it still had the same issues, and then tried it without installing anything from Google Play, just transferring a single music file from my PC to the phone and that didnt work either. The track played, but there was no audio to hear via the speaker. If I connect headphones to the 3.5mm socket I can hear the audio perfectly fine.

Im hoping someone has some input on this before I go to the store with the phone tomorrow. Has anyone experienced similar issues?

Cheers in advance