yashsingh1/xdaforums huggingface dataset:
[Xperia Z3 Compact Q&A, Help & Troubleshooting] lecoopsta:
color

Can everyone having issues post what color their phone is? I have orange and mine has the issue. My wifes is green and she has no problems whatsoever.

Edit: Wife's phone had no issues until she did the update about a month ago. Then bam. We both have the issue now.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] doyouwannabuildasnowman:
I have a green and white one and they both have the not receiving texts/calls (mostly on wifi, but sometimes I didn't receive texts or calls even when wifi was off). However, turning off LTE seems to have fixed the problem. Disappointing but at least my phone functions as a phone.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] tchen79:
potential solution?

I have a white z3c.

I posted the other day that I use to see this issue - but, it seems when I turn off NFC, then rebooted, it worked. I've been able to get calls/txts now with LTE enabled, but it does seem strange.

I'll experiment some more to confirm if NFC was the real culprit, but for now, it's staying off.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] doyouwannabuildasnowman:
My NFC on both phones has been off since day 1 and I'm still experiencing these issues. Occasional reboots do allow calls and texts to go through on LTE but it stops rather quickly (10 minutes later)
[Xperia Z3 Compact Q&A, Help & Troubleshooting] Covert:
Same issue here. I found this thread through a Google search...sorry if I'm bumping it, but this is a frustrating issue.

I'm using a trimmed-down Cricket SIM. Calls go to voicemail, texts get delayed if LTE and WIFI are enabled; switching to "WCDMA preferred" seems to "fix" the issue. I emailed Sony...we'll see. :(
[Xperia Z3 Compact Q&A, Help & Troubleshooting] samven582:
is this issues still present?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] cschmitt:
For some, yes - others (like me) have no issues at all on AT&T.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] aaronv20:
More bad news or lack of news.. I sent the Phone into Sony to see if the warranty claim could fix the issue. Nope, it didn't help. I actually had to wait a month to get my phone back on top of my weekly phone calls to make sure they would test for the connection issues. The Sony support team actually never has contact with the actual repair center and so my information was probably not passed on. When I received the phone back there was a receipt in the shipping box showing what was "repaired", not one thing that would have to do with the LTE or 3g radios.

Also prior to sending off my phone for warranty i ran another test. I live in Houston, TX (where im having the problems) but visited San Antonio, TX and oddly enough the phone worked perfectly in San Antonio! Seems the issue must be with the poor reception and or maybe the LTE bands are slightly different in either city. Im curious if running a custom rom with a different kernel would fix this? Im waiting to see if when Lolipop is pushed if that will fix it, if not im trying a custom Rom.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] verbal01:
This is how I fixed my phone which was experiencing the same issue:

1. Download Advanced Signal Status app from play store.

2. Launch

3. Click additional info button, agree to warning.

4. Click phone information

5. Click menu button in top right

6. Select radio band

7. Click USA Band.

8. restart phone

Not sure if it will work for everyone but I have had LTE and Wifi enabled for an hour have been sending test calls and SMS and they are coming in. I could not receive calls or SMS while having LTE enabled previously.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] sublimnl:
Please update us tomorrow to let us know how that's working out for you.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] verbal01:
Didn't seem to stick, missed several calls this morning. For what it's worth this is what my signal status shows when I'm not receiving calls:

ttp://imgur.com/IQv3E1j

This is what it looks like when I am able to receive calls:

ttp://imgur.com/tzmx0xA

Can't post links yet so add an H
[Xperia Z3 Compact Q&A, Help & Troubleshooting] APayne:
Plus 1

Add another to the list. D5803 on AT&T in Austin, TX.

Anyone found any answers other than disabling LTE?

This sim trick of activating a nano sim on a different ("legit") AT&T phone and then popping it into the Z3C--Has this been verified?

I have done some bloatware blocking using ADB on my phone and have caused some unintended side effects before. I'm wondering if everyone that has the issue has done this as well. So the question is--Is anyone having this issue that has NOT used ADB to eliminate some bloatware?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] cschmitt:
Yes, the first image shows LTE connection only, no 3G. Is the problem specific to certain locations where 3G signal is low?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] mtilson:
I went through this process on 1/7/15 and have yet to have a missed call or delayed SMS. I've even rebooted a few times and have still had good luck up to this point. Don't really know if it's just a coincidence or this procedure has had a positive effect, but I'll take it. Anyone else try it? Verbal01, had any luck trying it again?

I have not used ADB and was having this problem.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] bruce7373:
I'm with AT&T and will be receiving my new Z3c in a couple of days, so this thread caught my eye. It sounds like the exact same problem I had with a BB Q10 last year. It was an unlocked TMO version on AT&T's network. As soon as I switched phones to an AT&T branded one, no more problem. From this I suspected a firmware, not hardware, issue. Maybe the same here. Even if one has an unlocked Z3c, since its firmware isn't from AT&T, the problem comes up (substantiated by the fact that those on TMO's firmware don't have an issue). So, until and unless AT&T carries the Z3c, a workaround may be the only viable solution.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] cschmitt:
But some on AT&T have no issues with LTE and SMS / missed calls. If it's truly a firmware issue due to a non-AT&T device wouldn't you expect it to affect every Z3c?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] Snarflebits:
I have a Z3c on AT&T with no issues on LTE. no root, stock ROM. Dallas Tx
[Xperia Z3 Compact Q&A, Help & Troubleshooting] bruce7373:
That's great to hear. I was only speculating at any rate.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] Snarflebits:
I wonder if it's geographical. If I remember correctly, someone experienced the LTE issue in Houston Tx but not in Austin Tx.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] sublimnl:
Yes we have had the problem on two separate z3c's in Houston on Cricket wireless.

One was imported from the UK upon launch and the other was bought from B&H just a few weeks ago.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] aaronv20:
Im one those who found that LTE works when in San Antonio, TX but not in Houston, TX (on ATT) . However ive ran some more tests and found if when Im running LTE with the wifi toggled off it seems to work just not toggled on. I will still get a delay sometimes on my Text messages but im not 100% if this isnt partly cause of the Textra app. I dont have any more 2 rings and straight to voice mail issues either. Lastly i did run the "Advanced LTE trick". So to recap I can use LTE with little problems at home and in Houston area when i make sure to toggle off WIFI (connected or not). If at home connected to wifi i have to remember to toggle the LTE back off. Still hope Lollipop will fix this issue permanently.

My phone is an unlocked international model D5803, pick up off Ebay, FYI
[Xperia Z3 Compact Q&A, Help & Troubleshooting] bruce7373:
[MENTION=3076756]aaronv20[/MENTION]: so if at home on Wi-Fi with LTE off, any problem with incoming calls or texts?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] aaronv20:
Yes sir, no issues when WiFi on but Lte off, home or otherwise. Just an issue between WiFi and the lte radios, I guess
[Xperia Z3 Compact Q&A, Help & Troubleshooting] bruce7373:
Just got my Z3c and I'm happy to report no problems yet with text or calls, with LTE and WiFi both enabled (for the record I'm using the SIM from my Moto X). I had trouble setting up VVM (it couldn't connect), but I don't care much about that anyway. Does anyone use the answering machine option rather than voice mail? Does it allow screening?

Oh, and by the way, incredible phone. :)
[Xperia Z3 Compact Q&A, Help & Troubleshooting] lecoopsta:
No SMS or Calls either

I also have this issue. I've noticed that it depends on how good the LTE signal is. It's almost as if the phone is having a hard time auto switching into WCDMA/GSM if the LTE is not strong enough. I live in Little Elm, Texas, just outside of Dallas. My parents live in Denton, about 20 minutes from me and my LTE signal is great at their home and I have no issues getting texts or calls with both LTE and WIFI enable at their home. Come back to my house though, where LTE signal is low, and if I forget to toggle it off manually, I don't receive texts. I too feel like there is some sort of glitch. Can anyone confirm what colors of phone they have. Both my wife and I have this issue, mine is orange and hers is the green. I'm wondering if maybe it has something to do with the colors.

Really hoping Sony recognizes this issue and does something about it soon... Otherwise I'm gonna have to sell the phones, take a huge loss of money, and move to something else. Maybe the new Asus coming out soon.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] cschmitt:
Can you install Advanced Signal Status app and check 3G vs LTE signal when you aren't receiving texts? Another user reported no 3G connection and that's probably the cause.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] tumbler1:
Great news. I just bought my Z3C and tried to switch my LG G3 sim (after requested a Nano sim from ATT) into my Z3C, it doesn't even recognize the sim card (No bars at all), so I took your advise and took my wife's iPhone 5s Nano sim to try it out, it works great, so, now I know it's the sim card programing issue within ATT. Thanks.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] jerflash:
This is what I was saying from the start. If you program a sim with an iphone then put it into the Z3C it work perfectly
[Xperia Z3 Compact Q&A, Help & Troubleshooting] Snarflebits:
I just took my phone with me to the AT&T store. They programmed it for free and gave me the micro sim. Is this not an option for everyone else?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] APayne:
Sorry for the delay. I followed the steps below with advanced signal status and am currently receiving texts and calls with LTE and wifi enabled. So it's all good right now...

It's too early to call it a success, but I'll post back if it stops working.

I have an orange z3c in Austin, TX to answer another person's question.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] APayne:
Well, that didn't last long. Advanced Signal Status app doesn't work for me, so I'm back to 3g (phone says H or H+ so I'm guessing that's the same thing).

Sigh...
[Xperia Z3 Compact Q&A, Help & Troubleshooting] doyouwannabuildasnowman:
I think you are misremembering. I went through the thread and there are at least 4 phones with issues in Austin, and 3 in Houston. There is someone from Dallas who's phone works in Denton but not Little Elm. I wonder if seems geographical because of the strength of the LTE connections in various places?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] Snarflebits:
It's totally possible, I drove from Dallas to Beaumont this past weekend and I spent 3 days in the woods with LTE about 1/2 mile from the Sabine river. I streamed music the whole way there and back. Something weird is going on for sure. There may be too many variables to narrow it down.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] nopain9nogain:
Im form Houston and just got the phone yesterday. Unfortunately, I've got the same problem. But sometimes I still can receive TXT and CALL with Wifi and LTE on, and sometimes not. Sometimes a bunch of SMS arrive at the same time... Hopefully someone will find the solution for this problem soon.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] TmD73:
Add another one from Austin with the same problem.

I tried all the tricks from this thread, including swapping sims with an IPhone 5 on the same account. My sim in the iPhone worked with LTE, the iphone's sim in the z3 did not work with LTE.

Turning off LTE seems to be working but too early to call it a success.

Seems Houston and Austin are seeing the most issues here. Is it possible these areas may have a different "backend." Have these areas always been At&T or did they buy out another regional carrier? Just a thought.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] sublimnl:
Houston has been ATT since the Cingular days (late 90s)

It will be interesting to see if the Lollipop update includes a fix for this. I have my doubts.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] aaronv20:
Just upgraded to Lollipop (D5803_23.1.A.0.690_Customized_NCB.ftf) still had issues with LTE and Wifi both on (2 rings and straight to voicemail, and delayed sms messages). Using the Advanced Signal app the "bug" shows that the 3g or voice radio is still off when LTE and wifi are active. Is there a seperate radio/modem app or script that can be used to force the voice signal to stay on?! Otherwise, off to Ebay goes this phone..
[Xperia Z3 Compact Q&A, Help & Troubleshooting] mtilson:
Has anyone experienced this issue while on the US version of the 23.0.1.A.5.77 firmware (Android 4.4.4)? I bought my phone on ebay from a distributor in Singapore and had never bothered to switch over to the US-specific firmware until a few days ago. So far, I haven't experienced delayed SMS messages or missed calls with LTE and Wifi both activated since the switch. I'm sure the solution can't be this simple, right?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] mtilson:
Scratch that - received a batch of delayed SMS messages late yesterday. Definitively still a problem on my device even with the US firmware. Bummer
[Xperia Z3 Compact Q&A, Help & Troubleshooting] smcg2:
I have a white Xperia Z3 Compact on ATT and I have had missed calls and delayed text messages since I bought it (in both Florida and Ohio), as long as I have LTE enabled. With LTE disabled everything is fine, but it's ridiculous to have a smartphone in 2015 without LTE.

I've tried the solutions posted in this thread and anything else I could find while googling and nothing has worked yet (although I haven't tried the iphone sim trick).
[Xperia Z3 Compact Q&A, Help & Troubleshooting] lecoopsta:
Anyone have an update on this? I'm receiving text and calls what seems like regularly now, but I hardly ever get MMS. I'd probably guess less than 10%. Group messaging is a mess! Hangouts is always telling me I have MMS messages that need to be downloaded. When I press download, it just spins and spins and eventually stops trying.

I want to try the iPhone Sim trick, but I have a question regarding this. If I use someone's iPhone, is it going to screw with the IMEI #s? I don't want to get somebody's phone blocked/shutoff. If the IMEI stuff isn't going to be an issue, do I just go into the store, tell them I lost my phone and that this is the new phone I will be using, they'll set up my phone number to the new SIM card inside of the iPhone I'm borrowing, and then voila? I just take it home and put it back in my Z3c?

Man this is such a hassle. I wish Sony would fix this.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] XperiaLTE:
The iPhone sim card trick doesn't work.

I went through the process of programming a new Nano sim card on an iPhone 6 then moved it to the Xperia and same issue. This problem follows the phone.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] gman737:
FWIW- I have the same problem.

Xperia Z3 Compact

Latest US Build (Android 5.0.2)

AT&T

Houston area
[Xperia Z3 Compact Q&A, Help & Troubleshooting] PuffDaddy_d:
No Issues Here:

D5803

4.4.4 KitKat

AT&T

Kansas City
[Xperia Z3 Compact Q&A, Help & Troubleshooting] lecoopsta:
Still having this horrendous issue. Decided to test drive T-Mobile. They sent an iPhone 5s. I used iPhone on T-Mobile for a couple days, no service problems with texts or calls. Decided to test z3c with T-Mobile sim. Thought it was working fine until this morning, I put the T-Mobile sim card back in the iPhone and the iPhone buzzed off the hook. 10 plus texts and a voicemail I had missed on the T-Mobile sim while it was in my z3c. So... Issue isn't tied just to att. It's the phone, period. Gonna complain to Sony. It's my last option. If they can't do anything, I'll be selling the phone and taking the loss.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] HashBrownJM:
So, I certainly hate to be a thread necromancer, but I'm also in Austin and also having the same issues.

I've currently got the phone flipped to not using LTE (the WCDMA/GSM option), but I was really wondering if anyone had any advice.

Another thread suggests using the SIM in another registered LTE phone then popping it straight in, but I don't have another AT&T phone to register the SIM to!

Anyways, it's pretty disappointing/frustrating, especially since it JUST arrived from Amazon today.

Any help would certainly be appreciated!
[Xperia Z3 Compact Q&A, Help & Troubleshooting] dog77k:
Does this issue happen on non-stock based ROMs like CM12.1? I'm considering testing it out, but I haven't unlocked the bootloader yet, and maybe someone has been down this road already.

D5803 in Houston area
[Xperia Z3 Compact Q&A, Help & Troubleshooting] sillieidiot:
iono about that. because i use it on tmobile with no call/texting problems that you guys are describing. the only time i have issues, it's actually a tmobile issue with like the tower and everyone is affected.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] lecoopsta:
I don't know what to tell you, because that's exactly what happened. Literally as I stuck the T-Mobile sim back into the iPhone, ding ding ding. Tons of missed messages.

---------- Post added at 05:53 AM ---------- Previous post was at 05:49 AM ----------

If I was you, I'd return it while you still can. GREAT phone except this one major issue... That oddly isn't with all phones.... That has no explanation... But I still haven't found a fix.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] sillieidiot:
Well the only way I can explain that is because the iPhone uses Imessage and that number is registered to it. There were reports of people not getting texts when they previously had used an iPhone (and switched to some other device) since it was still connected to the Imessage server. It's a test drive device. Even if you didn't activate Imessage, it's probably already been entered in the system by someone else. Other then that, maybe you have a faulty phone?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] madridfan85:
This is also happening to me in Boston on T-mobile. I bought the unlocked version. I use google's Messenger app (not hangouts). I regularly miss MMS (group messages) and SMS messages. Sometimes it says it was unable to download a message (for MMS group message) but this message is hidden way in the individual contact thread. There is, annoyingly, no warning saying that the download failed. Also, I consistently get duplicate messages. Totally unacceptable in 2015 (or 2014 when I bought it).
[Xperia Z3 Compact Q&A, Help & Troubleshooting] PuffDaddy_d:
So, I'm quoting myself here, but the strangest thing has happened:

I traveled to a different city for work yesterday and had no trouble sending or receiving MMS messages in the new city; however, later that same day, I suddenly couldn't send or receive. I get error messages every time I try to send and NOTHING seems to fix it. I've rebooted numerous times, tried every combination of APN settings, and even prayed to the cell phone gods - nothing works. What in the world could have caused this suddenly loss of MMS ability?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] doyouwannabuildasnowman:
I'm still in Austin, still having trouble w/ it on 2 of our phones. I think you should return if LTE is super important to you. When I travel to other places, it doesn't seem to be a problem (CA, TN, FL). While there are a few others in this thread from other places, the majority (like 6/10) are from Austin and 1-2 from Houston.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] doyouwannabuildasnowman:
Like someone else said, it may have something to do with iMessage. First link is most relevant. Other 2 are just for fun.

https://selfsolve.apple.com/deregister-imessage

https://support.apple.com/en-ng/HT204270

http://www.ibtimes.com/apple-releases-deregister-imessage-page-users-switching-away-iphone-1721391
[Xperia Z3 Compact Q&A, Help & Troubleshooting] erraz:
A little off topic but is anyone having trouble connecting to the WAP. Cingular apns?
[Xperia Z3 Compact Q&A, Help & Troubleshooting] PuffDaddy_d:
So, I've finally figured out why I suddenly lost the ability to send and receive mms. It was caused when I used a mod to increase the brightness of the LED flashlight. I don't understand how they're connected, but simply editing the brightness value kills the mms. All is working again after I restored the setting to stock.

Sent from my Xperia Z3 Compact
[Xperia Z3 Compact Q&A, Help & Troubleshooting] sillieidiot:
the duplicate messages is actually a tmobile problem. it happens on every phone i have tested, some less frequent then others,
[Xperia Z3 Compact Q&A, Help & Troubleshooting] rvhuynh01:
Just wanted to post my 2 cents and see if anyone else can test this on their end.

Within the last few weeks, I started receiving delayed text messages through Textra. It would even show them as being sent out 15-20 minutes before they I received them in the timestamps. I tried switching to other text apps to my dismay, since I loved Textra's quickness. I experienced similar problems and couldn't figure out the issue. The only solution I found that has generated some measurable results, as in less delay, is switching my mobile networks under 'Settings > More... (under Xperia Connectivity) > Mobile Networks > Network mode > change 'LTE (preferred)/WCDMA/GSM' to 'WCDMA (preferred)/GSM'.

Has anyone tried this? Any luck? or Can anyone try this and let us know how it works for you?

Thanks!
[Xperia Z3 Compact Q&A, Help & Troubleshooting] dog77k:
Turning off LTE as you mention has been the workaround people have been using for this issue. It seems to have something to do with LTE paging not switching the phone back to 3G to recieve the SMS/MMS/call. And keeping the phone on 3G avoids this.

I'm hoping this is fixed in the 5.1.1 update that is rolling out.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] dog77k:
Nope, no luck with 5.1. Just got a flood of late texts after disabling LTE.

WTF Sony
[Xperia Z3 Compact Q&A, Help & Troubleshooting] dog77k:
I think I found a good workaround. I started to realize that, for me, the issue of missing texts/calls only happened when on wifi and lte (at the same time...i know lte isn't being used for data, but it's still the active cell connection). But I don't need the fast data of lte when I'm on wifi, so auto toggling the network mode from lte to 3G when in wifi coverage and vice versa might work.

It turns out that this is already part of gravity box, under phone tweaks / smart radio. Set normal mode to lte and power saving mode to 2g/3g. It's been working for me for about 4 weeks.
[Xperia Z3 Compact Q&A, Help & Troubleshooting] ul49:
Any updates here? I'm actually experiencing the exact same problems on my new z5c (at&t).
[Xperia Z3 Compact Q&A, Help & Troubleshooting] huludical:
I have had this issue on cricket, t-mobile, and now att. I'm about to sell this phone. It's ridiculous. It is definitely NOT network specific. It is the phone.