iOS 6.0.1: Loses LTE/4G when off Wi-Fi - no internet

Hi. Since yesterday's update, which I did over the air, my iPhone has lost LTE/4G connectivity 3 times since moving from Wi-Fi to a cellular area. No internet at all. Airplane mode toggle does nothing. A reboot seems to fix it, but then it happens again.

I am on AT&T in Chicago. I had no issues of this kind in iOS 6.0.

So to clarify:

1. I'm on Wi-Fi at work. No issues.

2. I leave the Wi-Fi area and go to a cellular signal where there is enormous LTE (middle of downtown Chicago).

3. There's no LTE/4G icon. Airplane mode toggle does nothing. Toggling cellular data does nothing.

4. Reboot seems to correct it until it happens again.

Is anyone seeing this? And does anyone have any ideas or fixes? I'm pretty sure this has nothing to do with Sandy or anything on the network simply because a reboot fixes it and it started right after the update.

Thanks to anyone who can help.

Scott

MacBook Pro (15-inch Late 2008), OS X Mountain Lion (10.8.2)

Posted on Nov 2, 2012 9:50 AM

23 replies

sfearnow

Level 1

0 points

Dec 11, 2012 9:02 AM in response to ScottKleinberg

I work in a company that supports 80 iPhone users. We are having this same issue on ALL of our AT&T iPhone 5's that are running iOS 6.0.1.

We are not having this problem at all with our Verizon iPhone 5's that are on the same OS release.

We have a case open with AT&T but have yet to hear anything... Glad to hear we're not the only ones. I was beginning to worry that it was just the repeaters in our building.

Dec 11, 2012 12:04 PM in response to sfearnow

Sorry that this is happening to you, but the AT&T vs. Verizon comparison is wonderfully helpful.

sfearnow

Level 1

0 points

Dec 11, 2012 1:07 PM in response to sfearnow

Also in downtown Chicago, I should add.

Tjo4

Level 1

0 points

Dec 18, 2012 11:42 AM in response to ScottKleinberg

Same things happens on my iPhone 5 on 6.0.1. The phone has also had difficulty maintaining a LTE connection and switches between 4G quite often. I'm also in near suburban Chicago.

BanditoB

Level 1

82 points

Dec 18, 2012 12:30 PM in response to ScottKleinberg

Hmm, this is all very interesting. I've been having this same problem since I got the iPhone 5 and was hoping that 6.01 would fix it, which it did not. I too am in the Chicago area where LTE coverage is really good.

The next time it happens, I'm going to call AT&T to report it. The more they hear about it, the sooner we'll probably get a fix.

eROCK1

Level 1

31 points

Dec 18, 2012 11:33 PM in response to ScottKleinberg

UPDATE: Release 6.0.2 came out today. I'm having much better wifi connection, and so far there have been no incidents of missing LTE or 4g data. I'm still watching this though...my problem was always intermittent, so I never knew what would trigger it. I recommend that everyone upgrade today!

sfearnow

Level 1

0 points

Dec 28, 2012 6:01 AM in response to eROCK1

Update: iOS 6.02 appears to have fixed all the issues we were seeing in our environment as well.

4dfish

Level 1

0 points

Jan 4, 2013 6:25 AM in response to sfearnow

I have iOS 6.0.2 and experienced the same problems on my iPhone 5. Issue persisted in New Orleans and Dallas areas. I previously had not experienced this issue, but it now persists every time I change from a wifi network to the cellular network.

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iOS 6.0.1: Loses LTE/4G when off Wi-Fi - no internet