iOS 8 T-Mobile WiFi Calling iPhone 5S : Outgoing calls fine, incoming calls go directly to voicemail.

Joe Streno wrote:

The Router itself needs nor takes any sim cards.

Well, to those of us who took advantage of T-Mobile's offer of T-Mobile@Home services some years ago, we have up to two additional phone lines for use at home through the internet at $10/month each (a bargain when first offered). I took them up on both!

The Linksys router supplied by T-Mobile is only a wireless "G" so at least now I will get faster wireless coverage, but I will not be able to "retire" my Linksys, so that I can continue to access and use both phone lines.

Joe/ Michael

I had the exact same experience that Joe described in the first post. Except that I am using iPhone 6 Plus with iOS 8.0.2

The only way I could receive calls was to reset the phone and reinstall through iTunes.

I am presuming that I have a 3GG SIM card since this is the latest model phone obtained through T Mobile. Is there a way to tell?

I am too apprehensive about trying out WiFi calling again after what happened the first time around.

By the way there is a post on the T Mobile forums where a person has posted detailed specs of how the WiFi calling may mess up the VPN connection which also causes the phone to heat up more than usual - it is the post by reader "ryanhu"

http://support.t-mobile.com/message/424581#424581

Hi

At the advice of the Apple and T Mo tech people I backed up my phone and tried W Fi calling again and it worked! - even receiving calls

Interesting that one has to enable WiFi calling before putting the phone in airplane mode as this action precludes going into the Phone menu.

I turned WiFi calling off and can still receive calls

The Apple person told me to reset my network setting but I am thinking that when I did my reset from the first time around it may have fixed the flaw.

Thanks again for all your advice and good luck with the new devices!

I have an iPhone 5s with ios 8.02 and t-mobile. The issue was incoming Wifi calls went straight to voicemail. I called t-mobile support. The tech reviewed the settings for my phone in the network. She corrected some settings in the t-mobile system. Then I reset Network settings on my iphone. Went through the restart process. I can receive incoming Wifi calls now.

The tech is also performing the same system changes for my wife's phone. I will go home and perform the Network reset on her iphone.

I will follow-up in a few days to confirm a permanent fix or whether the issue continues.

Hi

I'm from Australia and had the same problem with my iPhone 5S after updating to iOS 8. I didn't want to lose data by resetting through iTunes, so I reset my phone by going to <Settings>, <General>, <Reset>, <Reset All Settings>. It's now working fine. 🙂

The t-mobile tech support resolution regarding network settings lasted less that 24 hours. Using Wifi calling, Incoming calls are still going directly to voicemail.

As has been stated by the OP and myself, the actual solution is to get a 3GG sim for wifi calling to work properly.

I have called T-mobile support and then transferred to Apple support. So far when I mention the 3GG Sim, no one has heard of it. Do you have a recommendation regarding how to request the 3GG Sim. I tried the local T-mobile store with no success regarding the 3GG Sim. I searched T-mobile 3GG Sim with no definitive search results.

Try another T-Mobile Store or just puchase a new SIM card for $10. They will be happy to sell iit to you.

This is what I did in the failed hope that the 3GG SIM card would activate WiFi calling on my iOS 8 iPhone 5!

Last night we went to a T-mobile store. My iphone already had a 3GG Sim card but the sim card in my wife's iphone was a 3G. The phones were ordered and delivered together last October. Both Sim cards were replaced for free. I did not plead my case and still received two Sim cards for free.

Yes, I was foolish to the extent of $10 to not debate more vocally and get the updated SIM card for free as well! 😁

try this. At top of IPHONE do you see a crescent moon figure next to or close to battery life? If so, swipe IPHONE up from bottom. If crescent moon is turned on, tap on it to turn it grey. When Crescent moon is "white" IPHONE is in do not disturb mode.

I've had this problem since switching to T-Mobile. I have gone through months of dealing with customer service. I've had my sim card replaced, wiped/reset my phone several times, reset network settings, changed other settings, and of course made sure to have the Do Not Disturb feature turned off. I'm still missing calls and only being notified of them if they leave a voice mail. I've lost out on several jobs because of this, so for me it's beyond an annoyance.

T-Mobile did offer to send me a replacement iPhone, which I first accepted. However upon receiving it I noticed it was a refurbished iPhone and had scratches and scuffs all over it. Being that mine was in pristine condition and I needed it to be when I sold it that was unacceptable to me. I also would have been charged over 200 dollars if they found that the moisture indicator on the phone I return showed that it got wet. Being that I live in Southeast Texas that's a ridiculous condition to be okay with. Maybe that "new" phone could have worked, but I didn't feel comfortable losing out on hundreds of dollars on resale value as well as probably having to pay a couple hundred more because they find my phone to have water damage.

What's worse is that there doesn't seem to be anyone who clearly knows why this is happening or how to fix it. Once I pay off this phone I'll be switching providers and, unless I can get better answers/results or know this doesn't happen with the iPhone 6 (Plus), I'll be turning away from the iPhone 😢