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Happens in Chicago on Verizon regularly, but reverts back to 2G (circle indicator, dial-up modem speeds). If you're lucky, it'll eventually go into 3G.

I have been having this same issue around Chicago with Verizon. Happens a lot in the loop, out by bolingbrook, up by Schaumburg and along the i-80 corridor. Sometimes it'll take 20-30 minutes for it to switch back to LTE.
 
Having this issue too

I'm having the same issue. But worse. I have areas where there is no service. My iPhone 5 will sit there with the "No Service" message well after I'm in back in cell range and in a known good service area. Sometimes upwards of 4-5 minutes - unless I toggle on airplane mode and get the phone to initiate search again.

Other times, it settles on 4g and does not bump up to LTE without toggling.

It appears the phone does not poll for better service at frequent enough intervals. My guess is that this is an attempt to improve battery life/drain.

ATT - North Shore Boston
 
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I'm having the same issue. But worse. I have areas where there is no service. My iPhone 5 will sit there with the "No Service" message well after I'm in back in cell range and in a known good service area. Sometimes upwards of 4-5 minutes - unless I toggle on airplane mode and get the phone to initiate search again.

Other times, it settles on 4g and does not bump up to LTE without toggling.

It appears the phone does not poll for better service at frequent enough intervals. My guess is that this is an attempt to improve battery life/drain.

This is EXACTLY what I've experienced in certain areas. I do agree it seems that maybe to save on battery, the polling interval is not realistic for normal use. As I said, I did just replace my nano SIM about an hour ago so I'll see how it holds up. Not holding my breath though seeing as how wide spread the issue is.
 
I just went to ATT and got my nano SIM replaced. I will let you guys know if the problem continues.

Please don't forget to post back I'm having the same issue sometimes having to toggle airplane mode after a phone call to get LTE back. (Sometimes goes back after a min, sometimes I've waited up to 20 min and still nothing until I toggle airplane mode)

On a side note I feel like battery life could be better on iP5 (not that its terrible about 6hrs usage 16hrs standy by) but I've exhausted every other troubleshooting option and I'm starting to feel like it could be a network issue (trouble switching towers? idk). So I'm very curious to see if a new SIM helps with this as well.

Thanks in advance for keeping us posted
 
I have AT&T in Rochester, NY. Last night I was in the basement of a bar with less than optimal signal. Everytime I took my phone out of my pocket it was either no service or 1 bar of edge but quickly, I'd say in less than 10 or 15 seconds it would then connect to 4G or LTE with no issue.

I haven't had my SIM swapped, I've just had to reset my network settings once or twice since Launch.
 
Same here. Kansas VZW. Have to toggle Airplane mode when I'm at work. Only occasionally though.
 
VZ

In certain areas of LA, will drop to 3G and not go back to LTE unless LTE toggled or give it a good amount of time.
 
VZ

In certain areas of LA, will drop to 3G and not go back to LTE unless LTE toggled or give it a good amount of time.

LA here, same deal. After I leave the parking garage at work, I get stuck with no data on 4G. I'm wondering if we all should replace our sims.


Quick update again: extremely fast switching back and forth from LTE to 4G and back to LTE. Looks like problem solved :)

Was it easy getting your sim replaced? Might try and do it tomorrow, I never have good luck with getting an in-store rep that isn't dumb as balls.
 
I have been having this same issue around Chicago with Verizon. Happens a lot in the loop, out by bolingbrook, up by Schaumburg and along the i-80 corridor. Sometimes it'll take 20-30 minutes for it to switch back to LTE.

I've also had this issue in Chicago w/ Verizon.

I take the red line often and normally would get 3G or good 2G in the underground stations. The iPhone 5 will switch to the 2G circle, while showing 4-5 bars, and then get no data.

For me, most noticeable in the Chicago, Grand, Clark/Division, and North/Clybourn stations. My Verizon iPhone 4 would pick up data service when passing through there (or waiting for the train). iPhone 5 gets nothing.

On a related note, have any Verizon iPhone 5 users had their nano-SIM's replaced?
 
Happens to me both with my AT&T iPhone 5 and my Verizon new iPad. I'm thinking its an ios6 issue. My iPad never use to do it with ios5.

I'm in Denver.
 
take back your phone to at&t and tell them their inferior "LTE" is garbage and youre going to verizon. then actually go to verizon and you will be all set.
 
I've also had this issue in Chicago w/ Verizon.

I take the red line often and normally would get 3G or good 2G in the underground stations. The iPhone 5 will switch to the 2G circle, while showing 4-5 bars, and then get no data.

For me, most noticeable in the Chicago, Grand, Clark/Division, and North/Clybourn stations. My Verizon iPhone 4 would pick up data service when passing through there (or waiting for the train). iPhone 5 gets nothing.

On a related note, have any Verizon iPhone 5 users had their nano-SIM's replaced?

I catch the red line every morning for work. I get off at north/clybourn and while in the stretch between there and Chinatown (the underground bits) it fluctuates between 2g and no signal (was the same on the 4 and 4s) and it changes over to lte by the time I've crossed the street to the vitamin store. If you want it to change soon just airplane mode that sucka but it does change. I'm on verizon.

Now ask me when I'm down in the station and on full bar 2g why it takes forever to get any data at all and we have a discussion lol
 
I catch the red line every morning for work. I get off at north/clybourn and while in the stretch between there and Chinatown (the underground bits) it fluctuates between 2g and no signal (was the same on the 4 and 4s) and it changes over to lte by the time I've crossed the street to the vitamin store. If you want it to change soon just airplane mode that sucka but it does change. I'm on verizon.

Now ask me when I'm down in the station and on full bar 2g why it takes forever to get any data at all and we have a discussion lol

Right, that's exactly what mine does as well. I don't mind that it takes it a few moments (~30 seconds) once above ground to pick up LTE -- that's fine.

The real problem is that it shows 4-5 bars and 2G and the data doesn't work at all. The iPhone 4 would show 1-2 bars and 2G in those same underground areas and would still be able to slowly transfer data.
 
Right, that's exactly what mine does as well. I don't mind that it takes it a few moments (~30 seconds) once above ground to pick up LTE -- that's fine.

The real problem is that it shows 4-5 bars and 2G and the data doesn't work at all. The iPhone 4 would show 1-2 bars and 2G in those same underground areas and would still be able to slowly transfer data.

It does connect eventually. Just give it time.
 
Have the same problem in NYC on lirr
Verizon people seem to be able to talk in the tunnel, but with AT&T I have to flip airplan mode on and off when I get out of the tunnel
 
This happens on my Verizon iPhone 4S. When I'm inside a building with low service, I go from 3G to "2G". Then when I go back outside, it remains locked in "2G" service even though I'm within a 3G area.
 
iPhone 5 cannot hold LTE signal

I am having the same problem with my iphone 5--it cannot hold the LTE signal

But seems like a hardware problem, not a etwork problem My wife's 32gb iPhone 5 (on AT&T) holds the LTE signal all the time. My 64gb iPhone 5 (also on AT&T) constantly switches from LTE to 4G. In fact it always drops to 4G when I use the Maps app. Same iPhone 5s, and on the same network. But only one has a stable LTE connection.

I called AT&T and they reset a number of settings, but the problem is still there.

Also resetting network settings has no effect. Neither does restoring to factory settings.
 
Yeah my iPhone 5 will Completely lose service when I toggle lte on .. I can only use 4g now .where as before today everything was fine ..I would get 56mbs down or more on lte (I live in San Francisco ) ... Now "no service" when ever I toggle it on. Made an apt at the apple store for tmrw .ill stop by AT&T also to swap my sim before I go .. Just in case .. This sucks though
 
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