iOS 4.1 - Calls failing when connected to WiFi - 3G is fine

Same problem, first call always fails. Call again works

Same observation here! Every second call attempt failed when connected to WiFi.

I have been using a iphone since the 2G and it seems the operating systems are getting more and more problematic & unstable. Seriously considering my options for my next phone.

I also experience this problem even when both Wifi and 3G reception are good.

The first time that you make a call it fails. If you redial immediately the call is successful every time. I have only noticed the problem since iOS 4.1

I am experiencing the same fault of 3g 16. I think the problem is better described like this.

It's not possible to call out using contacts or number links or even directly dialing at all. Once the call fails you can then dial out by pressing the Call Back button. This give the impression that every second call fails where in fact you can only call having failed first to get the call back button.

Please try calling contact twice in a row from Contacts to verify you will not get a valid call until you press Call Back button

Only started happening with 4.1 evrything works fine when not connected to WiFi.

Big fat Bug

I have some similar issues that I think that I might have just solved with the help of a fairly cryptic fix...

I've got a iPhone 3GS that wouldn't take incoming calls/texts, make outgoing calls/texts on either Wifi or 3g - until I turned on & off the Airplane Mode. Then, at best, it might work for about 30 minutes - and at times, within 5 minutes, it was dead - again.

Then I found this website:

http://www.alvinpoh.com/cant-call-out-with-the-iphone-fix-to-the-call-failed-pro blem-with-iphone/

I took the advice (admitted, it's quite a dated solution for iOS 3) and now I'm actually able to USE my phone!

After doing this, I've already been up and running for the last two hours with only a single dropped call (which, admittedly, could've been from coverage). I've made 5-6 calls, been able to check email and use web-heavy apps - both of which I couldn't do before (without turning Airplane Mode on and off). I hope this helps someone out there!

Message was edited by: gimpi

Thanks for the tip. I am having some issues with my Iphone 4 as well with calls once in a while. Just tried your tip.

Another one getting this problem which coincided with V4.1, my colleague is also very annoyed at it. Tried the tips above but to no avail 😟 Why are iPhones getting worse???

I have started another thread unrelate to this about my wifi connecting but not displaying the symbol. Although yesterday I received a call and after about 15 seconds the call failed but I couldn't ring back. I tried pressing all back. The only way I could return the call was by turning wifi off? Incitement the wifi symbol also appeared at the top again to show I was connected but I just got the safari couldn't connect to the server

Same here. Updated my 3g from 4.0.1 which was unusable to 4.1 which now drops calls. I had no problems at all up to 3.1.3, but its been a disaster since then. I wish I'd stayed at 3.1.3, after all it doesn't give 3g owners much extra functionality.

Similar problem here:

before the 4.1 update this was not occurring:

9 times out of ten now:

First call fails
Second connects

I have an iphone 3GS and it work perfectly until i upgrade to IOS 4.1
the first call always fail. I wonder if Apple will listen to his loyal customers and try to fix the problem. I pay full price for this phone and I did not jailbreak or unlock.

Its same with my phone. First call always fails and this is happening only after iOS4.1 update. Never used to have this problem before.

I am quite disappointed to know that Apple OS / updated are turning into Microsoft updates.

It is unvelievable, but same problem is also happening in Mexico, the only change I did to make it work (iPhone 3Gs 32GB) was change the time settings, from automatic to manual, and MAGIC!! It works!! Apple team, will we have a real solution to what i can qualify as a BIG BOG!!!

I'm getting this problem: iPhone 3G from O2 (in the UK), running iOS 4.2. First time I try to make a call, I often (always?) get "Call failed". Prodding "Retry" connects the call.

Never noticed the problem when on 3G, only when on wifi.

BUT...

Phone already has manually set location, and "Show my caller ID" is already
on. So the suggested fixes don't

This is really pretty poor...

Robert.

I want to thank you guys for your posts and helping me solve this problem.
When I turn WiFi off on the phone, it does indeed solve the problem.
I also am not sure if it started with the 4.1 update. But it certainly could have, as it's only been happening recently. Every outbound call fails on first attempt.
I have been through all the fault diagnoses with my provider o2 - taking the SIM off the network in settings then back on again, full reset and restore, visit to o2 store to change SIM (which they didn't as it worked fine in another phone), then Genius Bar appointment at my local Apple Store, where they did a fault diagnosis and gave me a new phone. Interestingly the report says replacement due to a crack on corner of back plate, which there was (the oleophobic coating had worn off in a section of the screen too; no mention of that either), but no mention of the call fail fault.
The new phone worked fine before I backed up in iTunes to my previous settings where the problem has returned as before. (I obviously have WiFi set as on). If I'd known the cause of the issue I could have checked wifi with the software of the new phone which was 4.0.2 and then I could have determined it to be a possible bug in the latest software. But hey, I had to update my software first to do a back up onto my new one.
Thanks again guys. You've been a great help. I hope this problem has been picked up and resolved in the next update, (along with the app update greyed out hang on install issue).
All the best.