Q: Iphone 4s - 3G connection disappears after using wi-fi

Update: If the 3G does not kick in after leaving my home WiFi zone, I only have to go to Settings and turn on Airplane Mode, and then turn Airplane Mode off again, wait about 5 to 10 seconds, then the 3G appears.

Not a fix, but better than having to power off and reboot.

Well the new phone was restored and up and working Saturday night. It worked all of Sunday and just this morning it quit working this morning. I am now on call again with at&t since the new phone did not solve the issue.

If the phone would work with just switching air plane mode on and off then I wouldn't care but having to totally reboot the phone is too inconvenient. I need either at&t or apple to take responsibility for this issue and neither have taken responsibility.

Please keep submitting feedback as the more reports the quicker the issue will get raised.

I have same problem with my Iphone 4s and 4. After using a wi-fi connection at home and going out I've noticed that the phone doesn't switch automatically to 3g connection. Instead it states that there's no internet connection available at all. But if I'm switching fort and back in the airplane mode, after 10 sec the problem is solved. I have this problem with an iphone 4 and iphone 4s with two different providers (Mobistar en Proximus). I am Belgium based. It is only the switch from wifi to 3G and not the other way around.

Guys, keeps "spamming", ehr I mean feedbacking Apple with this issue.

http://www.apple.com/feedback/iphone.html

Ok. So I called at&t and then they transferred me to Apple who then transferred me back to at&t but both remained on the phone to talk about the issue.

Both reps were helpful and I currently have an open ticket with at&t engineering to monitor my phone and report back to me this week with what they find.

I am just looking to resolve this issue and the first step is to correctly identify whether the issue resides on the phone OS or carrier. 

The apple person did acknowledge they don't have lots of this reported issues but I am figuring that people are all classifying this bug under many names.  You can see two main threads between some who think wi-fi contributes and other who don't.  Also, when I talk to people they sometimes think it is a specific app until I have them do some tests and they realize they don't have network service.

I just hope we find out whose issue it is to resolve, at&t or apple.

Well, I think it has clearly something to do with Apple. Other people with other carriers have the same issue. Like thismit must have something to do with iOS.

Apple should fix this god **** fast! I feedback this weekly. Apple can't say that they have nomother reports like this!

I made this complaint back in February. About 3 weeks later, the problem was gone. I did not update anyting from iOS. I do believe it is a telco issue and suspect they may have changed their settings somehow. My wife has an iphone 4 and I have and iphone 4s. Both of us do not have the problem anymore and both are from the same telco provider. However, another friend of ours still has the problem and she is with a different telco provider.

So, go figure.

I am having this same problem.  I have to reboot my phone multiple times a day in order to restore internet connectivity.

I am particularly interested in hearing what Apple determines after monitoring your iPhone for a week. 

Please do report back your findings, JedWare!

My details: 

• I had set up my iPhone 4s using a backup from my previous iPhone 4.
• Can't get to internet, iMessage, etc.  Just sits there and doesn't receive/send any data.
• Phone still shows FULL BARS.
• I use AT&T.
• Not related to WiFi.

I heard back twice from at&t. They are still monitoring and have escalated the ticket up to another level. I guess that is a positive sign.

They must be doing something because there was one day where I had to reboot like 6 times and multiple times in the same location with no more than 30 minutes between reboots. I suspect some sort of testing was occurring from their side.

Given the long weekend they told me they would contact me early next week. I will keep you posted.

Hey guys! Which Acces Point you use? I use a Linksys WAP610n (v 1.0.04, build 7) with WPA2 password. Maybe it's due to the access point. My friend, who also has the 4S (iOS 5.1.1) doesn't have this bug. He uses a different access point.

i too have this problem and have been sent from pillar to post between apple and vodafone over the bankholiday weekend. apple exchanged the phone today, as they seem unaware of anyone having the same problem ( i wish i would have found this thread earlier). it is definitely a glitch/problem with 3G, as soon as i switch it off the phone works fine, receives calls and texts and i can actually use it.

will try luck with vodafone and a new simcard tomorrow, but not too impressed. why doesn't everyone have this problem though?

does it maybe depend on the mobile masts in th area? very good signal here in central london, but maybe there is some sort of corruption going on transmitting?

really dull this whole scenario.

Folks, I agree with Stema001.

PLEASE Keep sending feedback to Apple with this issue !!

When you call Apple Cust Service, the act like they don't know anything about it, that no one has complained about this, then they say to try to 'Reset Network Settings', which doesn't work (then you have to reload all your saved WiFi passwords cause they get wiped out).

We can see that it is not our local cell providers, if its happening only on my 4S phone, and not my 4 .

Stema, I doubt that it has anything to do with the Access Point, cause I'm using the same Access Point for both phones, and its only doing it on the 4S phone.

Use this link to provide feedback:

http://www.apple.com/feedback/iphone.html

Guys, feedback it weekly!

http://www.apple.com/feedback/iphone.html

Guys I thing in my case it's the access point! (Cisco Linksys WAP610N)

The issue is only appearing with my access point. If I use the main router (FritzBox Fon WLAN 7390) or the router at my girlfriends' house (also FritzBox Fon WLAN 7390) to access WiFi the issue does not appear! Next monday I get a replacement access point (an other than Cisco Linksys WAP610N) to check if the issue reappears!

Stay tuned!

P.S.: My PC shop told me that they had a lot of complains about this access point!

Update - OK, AppleCare put me through another couple of rounds of 'try this' and 'try that', i.e. we did a 'RESET ALL SETTINGS' (but first we did an iTunes backup), we restored the phone as a new phone, then tested to see if 3G kicked in automatically after being in my home WiFi zone, and it did ! Cool right ? Wrong. Afterwards, I reloaded the backup, first with all the music, then tested (still OK), then the photos (still OK), and then the apps, and then activated SIRI.  It worked OK for 2 days, then reverted back to the same problem. Applecare suspects that there was an app I loaded or something that is corrupting the iOS software.

They finally agreed to exchange my phone for a brand new one. And this is where it gets really weird.

I restored the backup of the old phone to the new phone a couple of hours after picking it up from the Apple store. Then about an hour later, I go to use my phone, and it's completely dead ! I thought it might need charging. It wouldn't even charge. I called Applecare, they said to try to Reset All Settings while plugged in to iTunes on my laptop , and it would even do that, some kind of failure message.  Apple said they could not understand.

So I went back to the Apple store, and got another new phone, restored the backup from the old phone to this new phone again, and voila ! IT WORKS ! Have had this new phone for over a week now, and it's working fine, even the automatic 3G connection after leaving my home WiFi zone !

If it fails again, I'll keep you posted.

note: the phone(s) was replaced free under AppleCare.