No se reciben llamadas y los mensajes de textos se demoran

Yeah this sucks. I was primary on-call tonight. Because I've missed calls in the past I added all my family's numbers to be called on Pager Duty. Tonight I got paged. First two phones didn't get called but the third did. Only problem was the 3rd phone was 2 miles away. And since the 3rd phone couldn't forward the call to 1st or 2nd phones, I didn't acknowledge the page. Thanks T-Mobile. I don't remember this being a problem on other networks. Will advise others about this issue until it's resolved.

Same problem with my phone.  It just started 2-3 months ago for me.  Delayed texts, phone won't ring when someone calls, no missed call notification, long delay when i try to call out.  I thought maybe i need a new phone... maybe i need a new phone service carrier.  It's terrible!  My wife works across the street from our house and today she tries to call me... I'm at the house... no call received!  So she tries to text me... got the text 1/2 hour later!  NOT COOL!

I have been experiencing this issue today all day. Multiple people called my wife to see why i was not answering the phone nor replying back to texts. I restarted the phone multiple times, removed the sim, reinserted sim, restarted the phone and the issue continues. I call myself from my landline and i am not able to receive the call. I went to the T-mobile site, had to reset my password to get in, and texted myself a temp password to test. It was 10 minutes before it came in and i received the message 6 times.  Same password - same timestamp.

I powered down phone, inserted sim into a different phone that i have and although I could make calls, i still could not receive calls on a totally different phone. No text messages either. Working for almost 30 years in telecom, i am now certain this is not a phone issue and feel pretty confident that this is a network issue. It cant be my account because all other phones in the account work properly.

T-Mobile, can you advise if there is a network issue or if there is an existing ticket open to your network engineers?

I moved from AT&T to T-Mobile and the same issue has persisted since the move to T-mobile. Me and my wife have One Plus 3 and One Plus One and caller often complain that they reach our voice mails directly without any ring. We do receive voice mails sometimes, but not always. It;s really annoying and despite communicating with the tech guys no resolution so far. Note that we used the same phones with AT&T and never cames across this issue. I have tried switching bands, choosing only 3G and 2G networks, but the same issue persists. My wife has not been able to setup banking alerts as she would never receive authentications codes from her bank. Not sure how long I would continue with this, but I wish i hadn't made the move from AT&T.

Same thing happening with me for the last 9 months.

Is it only happening with non T-Mobile phones (phones purchased else where )?

I thnk you are correct in believing tha it i only happening on non-Tmo branded phones

I believe it is happening on phones that do not have all the bands T-Mo is using now. I suspect they changed them in expansion of the network.

Had an Honor 6x which worked fine up until ealier this year.

Honor bands: LTE: 2, 4, 5, 7, 12, 17 Bands

After no resolution, I filed a complaint with the FCC to see if that would escalate the issue. Was contacted immediately by a nice lady supposed to be connected with the president's office. She said the engineers asked if I could switch the sim from the Honor to another phone. The only other phone I had was a several year old Lumia 950xl (Australian Model) I did the switch and the problem did go away on that number. Unfortunately, the Honor still has the problem even tho it has a different number now, as does my wife's.

Did some checking on the Lumia to see what the difference was. The Lumia's bands are:

LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20 (800), 28(700), 38(2600), 40(2300)

The additional bands on the Lumia are 17(700), 20 (800), 28(700), 38(2600), 40(2300).

As somethin0g of a consolation, TpMo sent me an LG Stylo 4. It only has 2GB ram but is nevertheless pretty fast and has the latest version of Android, plus more bells and whistles, e.g. wifi calling and some android thing that sounds like Apple Face Time.  I have tried setting it up for my wife, but she still wants her old Honor even tho it still has a problem 😥  The Stylo bands are:

LTE: 1, 2, 3, 4, 5, 7, 12, 13, 20, 38, 41, 66, 71

Comparing the Lumia, Honor and Stylo, it looks like the bands missing on the Honor and present on both the Lumia and Stylo are 20 and 38 so I suspect lack of those bands are the cause of the problem. Can others check their phones' bands for comparison?

There seems to be something magic about 20 and 38 which eliminate the problem.. 66 and 71 get the latest T-Mo features, but they don't seem to be required to eliminate the problem we are discussing as the Lumia 950XL doesn't experience the problem  and doesn't have those bands.  I wish the engineers would be a little more helpful it figuring this out. It has to be hurting T-Mo's reputation as some of the people in this thread have switched. My daughter was on our plan and left.

I myself was thinking of trying Consumer Cellular as they got good ratings on Consumer Reports and supposedly used the ATT network. But then I read that they had started using the T-Mo network also, so that wouldn't help.

I'm only still here as we have 4 lines for $100 and have two phone without the problem. Others might not be so lucky

Thanks a lot for detailed summary of your findings. I have Honor 6x then I bought Note 8 (international dual sim model). Both are problematic.

Can't claim to know that much about cell phone bands, just the comparison I posted. Possibly you could check the bands on you Note to see if consisten with what I've found.

Confusing part is that models for different areas of the world have different bands. I used this site plus the Honor  and Lumia support site

https://www.frequencycheck.com/

Because of different varieties of the same phone,you need to find the model number of the phone, e.g. Honor 6x is BLN-L24. For most phones it's in settings/about phone

There's also this page listing the phones with latest TMO bands  T-Mobile B71 Phones

Nope, I have a T-mobile branded SGS6e (bought directly from T-mobile), and still have all the same symptoms as described.

I purchased the Alcatel Go flip from Tmobile earlier this year and noticed right away calls would seldom ring through but go to voice mail, even when I had a good signal.  I thought maybe it was the phone itself as there are reviews for this model indicating others having the same problem.  Maybe it's not the phone after all.

I've also received voice mails but had no missed call notifications.  Yesterday I had a voice mail notice show up but the message had actually been left the day before, at a time when I had my phone with me and it was turned on but didn't ring.  I had checked my phone periodically the day of the message and there was no indication of a voice mail until the following day.   So far texting seems to be working ok but I don't use it all that much.

Another odd thing is I used to get a full set of signal bars at my house but now find myself having to walk around to get two or more.  Strange.  I've been with Tmobile since 2007 and rarely had any problems until this year.