Contstantly have to reboot iphone 6 to obtain data connection

My replaced iPhone 6 is now having the same issues as my original iPhone 6. At first, the replacement was functioning normally. Over the past 24 hours I have had to reset the phone several times to reconnect to LTE and/or WiFi.

Starting to think this is a software issue since it would be ridiculous to think both phones have had the same issue. Or are these iPhones just really ******?

I'm having the same problem. My wife and I ordered iPhone 6s through AT&T at the same time, received them the same day. They started having problems where the data connection would just stop working, and the "4G"/"LTE" logo would be there sometimes, sometimes not. Rebooting, restoring, network connection reset -- none of it was helping. So I sat on the phone last night with an AT&T tech support rep --- she resent our activation codes, and that immediately solved the problem for my wife and I's phones. I was happy, because the last thing I wanted to deal with was replacing hardware on phones that are in this short supply.

Now tonight my iPhone's data connection drops, just as it did yesterday. My wife's continues to work. I reboot, and it comes back, but only says 4G. I go into the settings and toggle airplane mode on and off -- LTE logo comes back. Great -- when will this break again?

This is just a horrible impression I'm having of these new phones. I don't know whether its the hardware, AT&T's network, or what, but the net experience is very anti-Apple. And that's for someone like me that has been using Apple computers since .. oh ... 1980? I tend to give Apple a pass on a lot of things, but this is just a horrible experience.

The worst part is not having the tools to determine what is wrong, like I could with a desktop computer. I can't go to a shell and look at logs, or look for a stuck process, or crashed process/driver, or what have you. I just have to think, "this is a buggy piece of hardware/software and was rushed out the door."

My best guesses are either (1) it's a software issue, and the data handling process is crashing -- maybe IOS 8.0.2 didn't complete resolve the issues in IOS 8.0.1 with regards to connectivity; or (2) it's a hardware issue, and AT&T is shipping phones that have flakey SIM cards.

I don't know if this will help you, but while I'm waiting to swap my ATT sim, I went to settings, cellular, then turned off LTE. Forcing it to stay in 4G land. I'm not an expert but it seemed like it was losing connection when trying to aquire the LTE network. Instead of dropping back to 4G, it just dropped everything. I was constantly toggling airplane mode to fix It. So far it seems to work. Unacceptable that it won't work, I'm paying for LTE service but not able to use it.

I'm located in the Midwes, USA.

Thanks for the suggestion. I'll give that a try.

Having the same issues on my iPhone 6 Verizon 64GB. I had to restart my phone 7 times yesterday due to it randomly dropping out. Definitely hurting my feelings on it...

***UPDATE 1***

Just an update on what I've experienced so far after switching LTE off.

I've had NO data connection issues with LTE off and being strictly on 4G. It alleviated the need to constantly reboot or toggle airplane mode. I gathered I wasn't getting an LTE signal anyway via the low performance on my speed test program. (4-5 Mbs).

But... I'm wasn't getting any LTE....

Monday Apple issued me a new sim card. Apple told me to take it to a AT&T Company Store. He emphasized "company". I guess there's a difference? I made an appt for today and the tech helping me said its a common complaint people are having. His belief was that it wasnt a sim card issue. He thinks it has to do with the new feature of VoLTE. That the Apple software and the AT&T carrier software aren't working right yet. He also said that there is a huge back log of activation work AT&T needs to get thru of which included activating the LTE capability. It could take a month to catch up according to what past launches have shown, according to him. His recommendation is to set the LTE to "Data only" since there are bugs in VoLTE (the "Voice and Data" setting) Is this all conjecture? Could I get a different story at a different store? Perhaps. I had him replace my sim anyway, and rest the network settings. I set my phone to just "data" as I dont envision using VoLTE, especially in the next 30 days. I usually go 30 days without making a phone call anyway (sorry mom) (there's a phone on this thing? 😉) I am seeing it connect to LTE now. Shows up on the status bar. I did a speed test with 5 "bars (dots?) and got 22Mbs. way better.

I have a business trip coming up and I'll see how it behaves flying to the east coast. I'll update after I get back.

Hope this helps anyone who is having similar issues.

BTW, I live in the same town you do Ben.

Update on my situation for everyone following along... everything is still working for me on the third device and new sim card I was given Saturday night. I waited a few days to sign into my icloud and itunes to isolate hardware from software issues, signed into them both about 24 hours ago and still no issues.

At this point I think my issue could be caused by one of three things.
1. Bad batch of iPhone 6's and I was unlucky enough to get two bad ones in a row. (unlikely)
2. Bad sim card given to me with first device, the second device experienced the same issue and it was using the same sim.
3. Software issue, the first two devices were both activated with my AppleID. The third device was activated with no apple ID and I waited a couple days to sign into it. Perhaps the activation with the apple ID was importing some bad configuration.

I will update the thread if this issue comes back.

BTW I am still on 8.0, I am going to wait on updating.

iPhone 6 64GB Verizon

I had the same problem and went to Verizon. They replaced the SIM card and my phone has been working great - no reboots required for past three days. Based on how quickly the Verizon rep understood the problem and how to fix it, plus he brought out two SIM cards from the back of the store, I would say this is a common problem.

I also tried to restore the phone and several other fixes via a chat with Apple Support, nothing helped until the SIM was replaced.

Replace your SIM card.

I had the same issue with two different iPhone 6s and as soon as I replaced my Sim card At Verizin (they will do it for free) it has worked without dropping.

I tried all of the reboots on both phones and the only thing that worked was replacing the SIM card.

Hope this helps.

UPDATE: I also went into the Verizon store and replaced my SIM. All my issues seem to have passed. It works great now. Also under Settings->Cellular->LTE I can now select Voice+Data for the Verizon Advanced Calling 1.0 which only was Enable LTE before.

***UPDATE 2***

Back from my trip. Went to 4 different cities in SC and experienced no failures. Had LTE most of the time, except in rural areas. Like others have stated over the last couple of days, it seems the new sim card and activation has done the trick. I don't see the logic in it, as it would seem that it's a software issue more than a "hardware" issue. Or perhaps the new sim card forces a new activation and that is what truly fixes it. SMH.

An update on my experiences. Summary -- all had been working well after upgrading to iOS 8.1. However, in the last 24 hours in the Twin Cities, MN, the problems have returned.

While I waited for iOS 8.1, I switched my phone into LTE for data only. That mitigated the problem. After installing iOS 8.1, I switched it back to data/voice on LTE. All seemed to work well for me.

Sometime within the last 24 hours, all the old problems have returned. This time, I can only mitigate it by turning LTE off entirely.

The only explanation I can come up with is that either I have flakey hardware and truly do need a new SIM, as others in this thread have needed. Or AT&T has recently made an upgrade in the Twin Cities of their LTE software and managed to screw things up again.

Looks like I'll end up needing to go to the Apple Store and get this sorted out.

I wish it was easier to determine what is at fault: the SIM card, the operating system, or AT&T's towers/network.

Ben,

To me it sounds like a new sim is the next thing to try. If you suspect it, it would be a good idea to eliminate that possibility.

I've had no issues after replacing mine, even after 8.1 in the twin cities on the ATT network.

Thanks for the suggestion -- I'm going to give that a try.