Problems with Pay Monthly iPhone 4

[Anonymous]

Hello All,

I am hoping that someone might be able to shed some light on a problem that I have with my iPhone 4. Over the last couple of weeks (I have had more than 1 year of trouble free service), I have been told by the people who call me that when they call me, they hear a very short ring tone and then my voicemail cuts in - I have no ringing on my phone. If they call again, then my phone rings and they get through no problems. 

I have contacted O2 Customer Services who first told me to turn voicemail off. After that, instead of one ring and then voicemail, callers heard one ring, then a beep and then nothing. Still no ringing o my phone.

A follow-up call with O2 resulted in a new SIM, but I still have the same issue.

Now, the real oddity is that if we go through the above process of the first call that does not get through to me, the second one that does, thereafter, calls get through first time. If I move my position (I am guessing to another mast) then I am back where I started. So it seems that the network does not know where I am until it has dumped the first call on a new mast, but thereafter it is fine until I move to a new mast.

Also, this is the situation irrespective of where I am, so it is not specific to my home and a specific mast.

Can anyone help me make sense of this and possibly give me some clues how to fix it.

[Anonymous]

Hi,

Have you tried lengthening the length of the rings before voice mail kicks in ?

How to do this is within this thread http://community.o2.co.uk/t5/Pay-Monthly-and-Pay-Go/How-to-Lengthen-Ringtime-on-any-O2-Mobile/m-p/36...

Also check your Service Status by inputting your postcode here http://status.o2.co.uk/ just to ensure your masts are working fine where you live, work and commute.

Try the known resets.

Settings > General > Reset > Reset All Settings and or Reset Network Settings.

Press the top power button and home button together until the Apple Logo appears and then let go.

One last resort would be a diagnostic at your most local Apple Store Genius bar http://www.apple.com/uk/retail/geniusbar/

[Anonymous]

Hi - thanks for your reply.

I have looked at the local service status and there are no issues. Also, I have now turned my voicemail off so it will now never kick in.

[adamtemp64]

This could be signal related.

Are you in a strong 3g area or a 2g area ?
Or has 3g become week and only 2g available ?

I ask as if in 2g only area and the phone is using data on 2g what you describe is normal behaviour!

[Anonymous]

We have a 3 out of 5 3G signal at home and generally good 3G coverage in the Bracknell area.

[Anonymous]

It's a shame you have had to resort to turning off voicemail to get round this issue.

Personally I dont use voicemail but at least thats my decision.

[MI5]

I don't believe turning VM off has solved the issue ?

[Anonymous]

Right - turning off voicemail has not solved the issue. The first call doe snot go through and does not record as a missed call. It is almost like the network does not know where I am until an incoming call. Once that first call has been dumped, it seems to be OK until I move (my guess to a new mast) and then the process repeats.

[Anonymous]

Is your iphone unlocked so you could try another networks sim in it.

Or try your sim in another phone.

Process of elimination !

[Anonymous]

Just tried a SIM from a Vodafone HTC - it seems that the iPhone is locked to O2 as it would not connect to the network. I have booked an Apple Store Techi Genius appointment for Saturday and will hopefully rule out issues with the phone then.