Xperia Z1S (T-Mobile US) Issue - Xperia Z1 Q&A, Help & Troubleshooting

Hi there. Hope all of you are enjoying your Z1 as much as I am. I'm very pleased so far... well except for the locked bootloader and no root part. I honestly don't know what anyone is complaining about in regards to the screen. Sure the viewing angles aren't great, but it's not a tv. And the color accuracy is among the best I've seen.
That said there's a couple thing off the top of my head...
The notification bar changes from black to a dull grey when in dialer or settings. Maybe it did this all along and I just noticed but it's bugging the hell out of me. Anyone else experience this?
Also periodically at home I'll lose LTE. The icon will show 4G, but not LTE below it. Not a problem, but when I search the "Service Providers" in "Mobile Network Settings" I will find an LTE network, but there's a check mark next to the 3G T-Mobile network. If I select the LTE network it immediately connects to that. It makes me wonder if it would automatically switch over to LTE later (presumably on a stronger signal). Any thoughts?

POMF2K said:
Hi there. Hope all of you are enjoying your Z1 as much as I am. I'm very pleased so far... well except for the locked bootloader and no root part. I honestly don't know what anyone is complaining about in regards to the screen. Sure the viewing angles aren't great, but it's not a tv. And the color accuracy is among the best I've seen.
That said there's a couple thing off the top of my head...
The notification bar changes from black to a dull grey when in dialer or settings. Maybe it did this all along and I just noticed but it's bugging the hell out of me. Anyone else experience this?
Also periodically at home I'll lose LTE. The icon will show 4G, but not LTE below it. Not a problem, but when I search the "Service Providers" in "Mobile Network Settings" I will find an LTE network, but there's a check mark next to the 3G T-Mobile network. If I select the LTE network it immediately connects to that. It makes me wonder if it would automatically switch over to LTE later (presumably on a stronger signal). Any thoughts?
Click to expand...
Click to collapse
I can only assume it is that there's a stronger HSPA+ signal than the LT signal. Can't comment on anything else - sorry. By the way, the Z was a locked bootloader, right? But, we found ways around that and for root?

POMF2K said:
The notification bar changes from black to a dull grey when in dialer or settings. Maybe it did this all along and I just noticed but it's bugging the hell out of me. Anyone else experience this?
Click to expand...
Click to collapse
This is normal.
POMF2K said:
Also periodically at home I'll lose LTE. The icon will show 4G, but not LTE below it. Not a problem, but when I search the "Service Providers" in "Mobile Network Settings" I will find an LTE network, but there's a check mark next to the 3G T-Mobile network. If I select the LTE network it immediately connects to that. It makes me wonder if it would automatically switch over to LTE later (presumably on a stronger signal). Any thoughts?
Click to expand...
Click to collapse
Your base assumption is probably correct. I haven't seen this problem specifically, but the phone is probably being less aggressive about LTE where the signal is weaker to save battery.
Don_Perrignon said:
By the way, the Z was a locked bootloader, right? But, we found ways around that and for root?
Click to expand...
Click to collapse
It'll come, in due time. :good:

Related

No 3G since FRF83

Any solution?
Only GPRS/EDGE does work, if 3G is available, it disconnects automatically until 3G isn't available.
Solution: Set to 2G-Only :-(
Anyone has the same problem?
I didn't have this problem with FRF 72.
Provider: Sunrise Switzerland
Radio: 32.36.00.28U_4.06.00.12_7
Have you tried going into your phone settings from *#*#4636#*#* and setting it to wcdma only? I did that on mine not too long ago and no more dropping to edge for me!
-------------------------------------
Sent via the XDA Tapatalk App
andi86 said:
Any solution?
Only GPRS/EDGE does work, if 3G is available, it disconnects automatically until 3G isn't available.
Solution: Set to 2G-Only :-(
Anyone has the same problem?
I didn't have this problem with FRF 72.
Provider: Sunrise Switzerland
Radio: 32.36.00.28U_4.06.00.12_7
Click to expand...
Click to collapse
does it lose complete signal? or does it show 3g still but just not doing anything?
Mine was working at first after flash. Then at about 2am it just kept trying to load then times out. Still shows 3g but just dont do anything. Im hoping its just tmobile messing with their towers... I dont see why it would work at first then not now..
The problem is, that i can only have a internet connection, when the phone is logged in into a gsm or edge network.
as soon as wcdma is available, the phone disconnects from the internet.
the signal is always available, but it looses the internet connection when it changes to 3G mode.
when the phone changes from 2G->3G mode, i see for 1s the 3G icon and then no icon will bi there.
when it changes back from 3G->2G, the EDGE/GPRS icon is visible again.
andi86 said:
the signal is always available, but it looses the internet connection when it changes to 3G mode.
when the phone changes from 2G->3G mode, i see for 1s the 3G icon and then no icon will bi there.
when it changes back from 3G->2G, the EDGE/GPRS icon is visible again.
Click to expand...
Click to collapse
ok thanks for clarification. My problem is different. I think related to phone company.. I still show the 3g signal and even have bars, but the pages dont load and eventually gives me the check your service and try again alert....
So Im hoping soon its working again for me... And I hope you as well figure it out.....
Thank you Good luck!
Had the same issue after update, did *#*#4636#*#* and noticed I was set to GSM only. Set it to WCDMA preferred and now it's good.
Thank you very much, thats the solution!!
Andi
ezhangin said:
Had the same issue after update, did *#*#4636#*#* and noticed I was set to GSM only. Set it to WCDMA preferred and now it's good.
Click to expand...
Click to collapse
Sent from my Nexus One using XDA App
ezhangin said:
Had the same issue after update, did *#*#4636#*#* and noticed I was set to GSM only. Set it to WCDMA preferred and now it's good.
Click to expand...
Click to collapse
Thank you. Updated to FRF83 this morning and I've had a full 3g signal, just couldn't pull data all day. Could over edge. Sure enough, GSM only was selected.
AT&T N1.
I'm having the same issue on a non-rooted phone on T-Mobile. No 3G after the FRF83 update. Full bars of service and 3G displayed in the status bar. Dropping to Edge only works but there is no data with 3G.
Lost Dog said:
I'm having the same issue on a non-rooted phone on T-Mobile. No 3G after the FRF83 update. Full bars of service and 3G displayed in the status bar. Dropping to Edge only works but there is no data with 3G.
Click to expand...
Click to collapse
Same issue here.
Switching to WCDMA preferred doesn't work for me though.....any help is welcome
I think it's a hardware problem with a lot of N1's.
Mine was ok the first 2 months, and later, 3g not working. This is driving me crazy ):
I have tried everything. Change the simcard, I did a reset of the data with my telcon, and nothing happens.
I've seen these problems on many N1's.
I hope google / htc release a fix for this problem.
Lost Dog said:
I'm having the same issue on a non-rooted phone on T-Mobile. No 3G after the FRF83 update. Full bars of service and 3G displayed in the status bar. Dropping to Edge only works but there is no data with 3G.
Click to expand...
Click to collapse
how bout checking your bands in the service menu. so *#*#4636#*#* -> phone info -> press the menu key for more options -> select bands -> choose one appropriate for your region (ie "USA BANDS").
If all else fails do a factory reset by going to the settings -> privacy -> restore factory defaults.. of course do a backup/sync/whatever before just to make sure you can get all your apps back.
There's other ways to do a factory reset via the bootloader .. its under recovery and you press up volume or the trackball I think and you can just select all the clear/erase settings there and that should clear out everything on the phone's internal storage.
The factory reset worked for me (via bootloader) when I upped from update-1 to FRF50 and didn't have any data icon next to my signal strength. Could call out but couldn't get data.
Hope that helps.
jasonpich said:
I think it's a hardware problem with a lot of N1's.
Mine was ok the first 2 months, and later, 3g not working. This is driving me crazy ):
I have tried everything. Change the simcard, I did a reset of the data with my telcon, and nothing happens.
I've seen these problems on many N1's.
I hope google / htc release a fix for this problem.
Click to expand...
Click to collapse
Check your APN settings. Do a full factory reset from the bootloader. If nothing works you should call tech support again. Most 3g issues where you have issues with connecting are service/signal level related. I *****ed early about my 3g issues on tmobile and it was the network as they've pretty much gone away with improving the backhaul in my area for HSDPA+ or updates to the phone's radio.
HTC is really really really cool about swapping phones and repairing them. If you feel you have a nexus that has hardware issues call them. I did this 3 times already (one time for minor cosmetic issues with the refurb they sent) and I couldn't be happier about how willing they were to replace/repair the phone. It turns out I really didn't have any issues with them at all.. with any issues with hardware from the second refurbished phone. It was service or software related and I'm happy to say with updates/tmobile service improvements I couldn't be happier with this phone.
blisk said:
Check your APN settings. Do a full factory reset from the bootloader. If nothing works you should call tech support again. Most 3g issues where you have issues with connecting are service/signal level related. I *****ed early about my 3g issues on tmobile and it was the network as they've pretty much gone away with improving the backhaul in my area for HSDPA+ or updates to the phone's radio.
HTC is really really really cool about swapping phones and repairing them. If you feel you have a nexus that has hardware issues call them. I did this 3 times already (one time for minor cosmetic issues with the refurb they sent) and I couldn't be happier about how willing they were to replace/repair the phone. It turns out I really didn't have any issues with them at all.. with any issues with hardware from the second refurbished phone. It was service or software related and I'm happy to say with updates/tmobile service improvements I couldn't be happier with this phone.
Click to expand...
Click to collapse
Thanks blisk, but the thing I don't understand is why Blackberry 9700 with T-Mobile bands, doesn't have problems at all ?
By the way, I rooted my phone , so the thing with the warranty it's complicated
I had it happen last night at work all night, but when i got home i checked my wife's tp2 and it also was doing the same thing so for levity wasn't the phone but tmobile. They started worming the same time also.... I think its tmobile.
Hello, I had the same problem with my imported n1. I'm using the tmobile version non rooted fully stock manually updated to frf83. I did a *#*#4636#*#* and selected wcdma only, rebooted and couldn't connect to my gsm network. Went in again and did a wcdma preferred, rebooted, and I works better, still changes fast to edge and G, but less often, I'm still trying it but I have high hopes its gonna be ok
Mmmm i did have problems with 3G too after pushing FRF83, but i found out that for some reason the APN settings weren't set correctly after the update. In my case the port setting after the proxy of the APN wasn't set, i changed to the correct value and it worked.
In conclusion, check your APN settings.
Just went from FRF72 to FRF83 and it's working fine.
I'm currently set to GSM auto (PRL) in the *#*#4636#*#* and I didn't change it to that after putting on FRF83.

No signal weird letters RSSI

Hey all,
So the issue is gone but still curious. I had no signal one day after class. All I saw was, no signal, even though my carrier logo was displayed. Tried loading internet but nothing.
Shortly after RSSI was displayed on the signal strength tile. I still couldn't place Phone calls or use the internet.
I'm suspect of my carrier AIO - AT&T having several mini outages and not telling customers based on previous situations so I'm investigating. Thanks for the help!!
Image is attached..
Sent from my XT1053 using xda app-developers app
RSSI = received signal strength indicator.
Displaying the letters is a little strange though, sounds like a software glitch of some sort.
I have had exactly the same thing happen on my android mobile on kitkat in the last few days. I have noticed it on at least 3 occassions and it always seems to happen late at night when I have stopped using the mobile. It is very odd! I used Google to find the answer and it lead me here. Would love to know what it is and why it's happening.
BTW my phone is a moto g
my opinion; RSSI is displayed because you dropped your carrier. being a GSM carrier, it's possible you tried connecting to someone else's faint signal but never authenticated. this is all speculation, but hypothetically possible.
in other words, as long as you re-authenticate to your carrier, it's a non-issue.
Very strange, but I have a signal when it is happening to my phone and it is happening a lot lately, especially in the evening and then quite often as soon as I spot it it disappears. Starting to make me think something odd is going on.
well.. your image also shows "emergency calls only" which supports the theory that you've dropped carrier signal altogether. I believe you're right that believing that it has to do with the ATT/AIO service outtage.
but why RSSI instead of any other message... is another question altogether...
640k said:
my opinion; RSSI is displayed because you dropped your carrier. being a GSM carrier, it's possible you tried connecting to someone else's faint signal but never authenticated. this is all speculation, but hypothetically possible.
in other words, as long as you re-authenticate to your carrier, it's a non-issue.
Click to expand...
Click to collapse
aldouse said:
well.. your image also shows "emergency calls only" which supports the theory that you've dropped carrier signal altogether. I believe you're right that believing that it has to do with the ATT/AIO service outtage.
but why RSSI instead of any other message... is another question altogether...
Click to expand...
Click to collapse
Steve-x said:
RSSI = received signal strength indicator.
Displaying the letters is a little strange though, sounds like a software glitch of some sort.
Click to expand...
Click to collapse
I do think it is a software glitch but it's very inconsistent. I feel strongly it's a Moto X or maybe Motorola firmware thing. With AIO I kept losing signal, so I left them and with T-mo now I and I experience the low signal rarely, and low signal here and there.
EDIT: I also still have some MMS issues w/ T-mo & AIO. not working, also inconsistent which I think is another firmware bug. Any of you guys have some clever ideas on how to troubleshoot this? Where would you start?
I'm rooted with R/W access and willing to dig thru system's files! apk's, whatever! Because this def is a problem and I would like to solve it.
drago10029 said:
I do think it is a software glitch but it's very inconsistent. I feel strongly it's a Moto X or maybe Motorola firmware thing. With AIO I kept losing signal, so I left them and with T-mo now I and I experience the low signal rarely, and low signal here and there.
I also still have some MMS issues. Not working also inconsistent. Any of you guys have some clever ideas on how to troubleshoot this? Where would you start?
I'm rooted with R/W access and willing to dig thru system's files! apk's, whatever! Because this def is a problem and I would like to solve it.
Click to expand...
Click to collapse
I would also mess around with manual network selection while I had AIO so that could explain the weird signal stuff, here's the app I used in addition.
https://play.google.com/store/apps/details?id=net.andirc.lteonfoff
Strangely enough I've got this showing up in Airplane Mode on my Moto G as well (Verizon Prepaid activated but never paid for service). Also one night at random I noticed I had 3G showing up instead of just bars and used 250mb of data for free which was weird.
Try to specify carrier
Hey,
Please try to specify which carrier you prefer so your Moto X will not try to connect to alternative carrier with stronger signal.

? Question about Verizon and data roaming

Using my N6 on Verizon, I frequently get messages that I have left my home and dont have data roaming enabled. I don't understand because my note 3 had no problem with Verizon. If I turn on data roaming for data might incur charges from some other provider? On the status bar it used to say either T-CDMA or Verizon Wireless, now it says 3100. My SIM is the same one I used in the note 3. If it matters I am using Liquid Smooth ROM and Franco r2 kernel. Voice seems to work. Any suggestions are welcome.
I'm having the same problem. I have to keep going back to stock to get LTE. I've tried liquid smooth, validus, and bliss pop and all gave me roaming and no LTE. All are their latest builds too. I've also tried popping in and out the sim card with reboots as well.
jerbeck24 said:
I'm having the same problem. I have to keep going back to stock to get LTE. I've tried liquid smooth, validus, and bliss pop and all gave me roaming and no LTE. All are their latest builds too. I've also tried popping in and out the sim card with reboots as well.
Click to expand...
Click to collapse
That is exactly what I am seeing. I'm on WiFi 99% of the time but when I leave the house I have no data.
Good ole Verizon making it impossible to do anything without them approving first. Its probably because Verizon doesn't want people to use the phone on their network before they release it.
They've never been good about nexus though. If you don't recall the whole galaxy nexus debacle
I had the galaxy nexus on Verizon but don't recall them interfering. I do hope that once they offer the 6 that our network access is unfettered, or the community will figure out how to make it work with custom ROMs.
Sent from my Nexus 6 using Tapatalk
Same thing happening here. Goes away after like 10sec tho
Jsuh0 said:
Same thing happening here. Goes away after like 10sec tho
Click to expand...
Click to collapse
Your roaming goes away? I can't run any ROM without roaming on Verizon...
I noticed this issue on CM based ROMs. Any that are stock based are not effected by this bug, for me at least. I have spent a couple of hours trying different things out that people suggest but none of them have worked. I was able to get 3G to work on liquid, but no LTE. and it reverted after a reboot. I sure hope someone can get this fixed soon.
im running cm12 on my n6 and using verizon and it works perfectly. No issues.
on Bliss Pop the Status Bar icon is NOT roaming but if you pull down and check the tiles it says roaming. I dont think its actually roaming though...LTE Discovery tells me I am still LTE and so does Network Signal Info.
So I think its just in the UI.
cmh714 said:
on Bliss Pop the Status Bar icon is NOT roaming but if you pull down and check the tiles it says roaming. I dont think its actually roaming though...LTE Discovery tells me I am still LTE and so does Network Signal Info.
So I think its just in the UI.
Click to expand...
Click to collapse
You think it is still on vzw when it thinks it is roaming. If I enable roaming data I won't get a huge bill from some provider?
almahix said:
You think it is still on vzw when it thinks it is roaming. If I enable roaming data I won't get a huge bill from some provider?
Click to expand...
Click to collapse
Well, I cant swear to it for sure, but I from the apps I have I am still attached to the same cell tower, so not sure how that would equate to roaming.
LTE Discovery also shows as roaming, but all the other info also shows LTE. Same for Network Signal Info.
IANAL , but if your attached to your normal home cell towers, it would be hard for us to be roaming I would think....and hope
It may have to do with LTE vs 3G. When not on LTE it says 3100 (or 31000?) and that bus when I am "roaming". So confusing. I've gone back to stock rather than Liquid Smooth. I will try an AOSP ROM like Pure to see what happens. Although I'm not missing much on stock.
Sent from my Nexus 6 using Tapatalk
cmh714 said:
Well, I cant swear to it for sure, but I from the apps I have I am still attached to the same cell tower, so not sure how that would equate to roaming.
LTE Discovery also shows as roaming, but all the other info also shows LTE. Same for Network Signal Info.
IANAL , but if your attached to your normal home cell towers, it would be hard for us to be roaming I would think....and hope
Click to expand...
Click to collapse
So all I can add is that I just looked at my bill which ended today. I have been using BP for the last several days at least, and I have 0 roaming charges FWIW YMMV all those caveats....I have a Nationwide Talk 450 Min plan with the standard 2gb data.
HTH, but remember I added the caveats, caveat emptor
Any update?
I have same kind of problem too. Im afraid the bill will goes up by this.
Please let us know if there is a fix for this
Yeah same problem... I don't get why some Verizon users agent having the same problem. Would unrooting and doing a factory reset maybe fix the problem? Frustrated that I can't run a custom ROM without roaming...
Go take a look at your bill/usage online and see if things are showing as roaming. like I said mine looked fine. And it seems like an issue with quite a few roms from understanding.
cmh714 said:
Go take a look at your bill/usage online and see if things are showing as roaming. like I said mine looked fine. And it seems like an issue with quite a few roms from understanding.
Click to expand...
Click to collapse
I just tried out Broken and it has working LTE on Verizon! I'll have to look at my bill, haven't been on a custom ROM with roaming in effect for very long though, so I probably wouldn't be able to tell very easily.
I have a Stock Rooted, Unencrypted N6, with a few custom Tweaks. On VZW have not had ANY issues whatsoever with my service or LTE. Perhaps some custom ROM/Kernels might be causing these issues?
Stock seems to not have the issue. It is said herein that AOSP based ROMs don't either but that is not true in my ecperience. LTE Discovery says 31000 is Verizon Wireless so I believe that even though it thinks it is, it isn't roaming from VZW. I enabled data roaming and switched back to Liquid Smooth and I should be alright. Thanks to everyone for the insights.
Sent from my Nexus 6 using Tapatalk

Frequent Random Network Drops

I've seen a number of threads where people post about their device dropping network data connectivity, and needing a reboot to solve it.
My issue is a bit different. Occasionally (I've noticed it 3-4 times today) when I go to send a text (SMS) or to use a data enabled service like Hangouts, that my phone shows no bars at all.. not even just no data, but the bars are grey and there's a red x. I wait about 15 seconds and it reconnects, then another 10 seconds later, the data is live again.
Phone is a private sale and under 1 month old, and all the Stamina functions are off.. I do see that the "Queue background Data" is turned on, but I don't think this should effect, no?
Not sure what digits I should be looking at to know if this might be a hardware vs software issue.. build is listed as .93
Im no stranger to unlocking and flashing, but I've kept this stock cuz it's tight and I adore the battery life.
Suggestions?
sh0nuff said:
I've seen a number of threads where people post about their device dropping network data connectivity, and needing a reboot to solve it.
My issue is a bit different. Occasionally (I've noticed it 3-4 times today) when I go to send a text (SMS) or to use a data enabled service like Hangouts, that my phone shows no bars at all.. not even just no data, but the bars are grey and there's a red x. I wait about 15 seconds and it reconnects, then another 10 seconds later, the data is live again.
Phone is a private sale and under 1 month old, and all the Stamina functions are off.. I do see that the "Queue background Data" is turned on, but I don't think this should effect, no?
Not sure what digits I should be looking at to know if this might be a hardware vs software issue.. build is listed as .93
Im no stranger to unlocking and flashing, but I've kept this stock cuz it's tight and I adore the battery life.
Suggestions?
Click to expand...
Click to collapse
check in settings in network and set your network to the one you use , like gm/wcdma /lte , maybe your phone is strugling to find 3g or 4g , try it , who knows it might solve the issue , ty
Been about a month since I posted, and I'm still experiencing this issue. I often thumb my phone on and it's not connected. I don't really mind waiting for the 30 seconds or so that it takes to jump back on the network, but it often means I miss calls, and since it's my business phone, it kinda bums me out to suddenly get a VM notification of a missed call even though it never rang.
Is there some sort of utility that I can use to monitor the network activity to see how frequently it drops, and for how long? I've looked into ones on Play but they don't seem to have a history, just something that shows what data up and down is currently being reported.
Sadly the only Sony store in my city (and I think the country - Canada) has recently closed for good, so I'm not sure how to go about warranty repairs...
sh0nuff said:
Been about a month since I posted, and I'm still experiencing this issue. I often thumb my phone on and it's not connected. I don't really mind waiting for the 30 seconds or so that it takes to jump back on the network, but it often means I miss calls, and since it's my business phone, it kinda bums me out to suddenly get a VM notification of a missed call even though it never rang.
Click to expand...
Click to collapse
I don't have a solution, but I can tell you that you're not alone. I've been experienced the same thing on my Z3C. I sometimes wonder if it has anything to do with the fact that the MVNO I use doesn't support 4G LTE.
kopsis said:
I don't have a solution, but I can tell you that you're not alone. I've been experienced the same thing on my Z3C. I sometimes wonder if it has anything to do with the fact that the MVNO I use doesn't support 4G LTE.
Click to expand...
Click to collapse
Interesting.. Your issue isn't just data, but a complete network disconnection? Im with Fido which is an MVNO under Rogers, but I thought they supported LTE. The issue also persists even on wifi
sh0nuff said:
Interesting.. Your issue isn't just data, but a complete network disconnection? Im with Fido which is an MVNO under Rogers, but I thought they supported LTE. The issue also persists even on wifi
Click to expand...
Click to collapse
Yes, it seems to be a complete loss of the mobile connection. When I wake the phone I see gray bars and a red X on the signal strength indicator. Within seconds the phone re-acquires and the indicator goes to 2 or 3 bars. I have also seen it happen with wifi active. The frustrating part is that it doesn't seem to do it often enough to troubleshoot. I'll notice the problem maybe a couple of times a month and there's nothing obviously different about my usage patterns in those instances.
Mine does it at least a dozen times a day. I can only assume this as I frequently miss calls and at least 3-4 times a day I see it happen. =(
Same Problem
Randomly I have no connection at all but after a few seconds everything wents back to normal. Did not have this problem with T-mobile in Germany but with with O2 I have. With T-mobile I had LTE but with O2 I don't, so I guess that's the reason.
Interesting... I've disabled LTE and now have it on 3g/GSM. We'll see how it works moving forward, and I'll post again in a week. Stay tuned.
Service Providers
In the mobile network settings one can change the service provider manually. With LTE enabled my provider has three entries: LTE, 3G and 2G. Connecting two LTE fails, because my provider blocked it in my plan. Having LTE enabled, it often tries to connect to LTE I assume. I switched off LTE and set the provider manually to 3G. Maybe that helps. We'll see.
realTobbse said:
In the mobile network settings one can change the service provider manually. With LTE enabled my provider has three entries: LTE, 3G and 2G. Connecting two LTE fails, because my provider blocked it in my plan. Having LTE enabled, it often tries to connect to LTE I assume. I switched off LTE and set the provider manually to 3G. Maybe that helps. We'll see.
Click to expand...
Click to collapse
Interesting.. I have LTE as part of my network and plan... But once I made changes to the settings as I indicated, I no longer receive the network drops I originally experienced.. I might just be missing the alerts, but it seems fixed... #crossedfingers

[Q] Cell reception indicator constantly flips between "no reception" display and bars

[Q] Cell reception indicator constantly flips between "no reception" display and bars
I'm using the Xperia Z3 Compact on TMobile's network in the US.
About 1/4 of the time when I turn on the display the phone indicates that it has no cell reception:
1) The phone shows no bars of reception, and a red X over the bars
2) The lock screen reads "Emergency calls only"
However, within a second or two the phone appears to acquire an excellent signal and I get a full 3-4 bar display. All of the areas in which I use the phone are marked as "Excellent" on TMobile's coverage maps.
This also happens intermittently while I'm using the phone. I'm not sure if it's actually losing the signal or if it's just a software issue. I've never had it drop a call or cut out while I'm talking.
I'm getting only acceptable battery life from the phone (about 25% at the end of the day) despite light usage and conservative app installation, even though this phone has a reputation for excellent battery life. My theory is that this might have to do with the phone constantly disconnecting from the network and then having to re-aquire a signal.
Anyone else had this experience with the Z3C?
Hey mate.. I posted the exact same issue a couple of months back. I was experiencing this exact same issue.
I've had my LTE disabled for about a month now and haven't had a single drop.
Not sure if LTE is a dealbreaker but since my device is a business line, I can "suffer" with better battery life and slower internet if I'm not dropping calls. I've considered trying a ROM with updated radio firmware but figured I'd wait to see what the current Lollipop update does ('ll re-enable LTE once I install it and see if it repeats the same behavior) for my phone before trying a 3rd party system.
Hope this helps
sh0nuff said:
Hey mate.. I posted the exact same issue a couple of months back. I was experiencing this exact same issue.
I've had my LTE disabled for about a month now and haven't had a single drop.
Not sure if LTE is a dealbreaker but since my device is a business line, I can "suffer" with better battery life and slower internet if I'm not dropping calls. I've considered trying a ROM with updated radio firmware but figured I'd wait to see what the current Lollipop update does ('ll re-enable LTE once I install it and see if it repeats the same behavior) for my phone before trying a 3rd party system.
Hope this helps
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Thanks! Really gratifying to know that it's not just my device. Seems like there's a strong possibility this is the issue since I'm on a MVNO that's only been on this LTE network a few months. I've flipped the device into GSM only mode and we'll see if it helps.
Dumb question how do i flip it into gsm?
qylie said:
Dumb question how do i flip it into gsm?
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Settings>More>Mobile Networks>Preferred Connection type> GSM only
Sent from my D5803 using XDA Free mobile app
Thanks!!!
I'm having the same issue as you have described. For now I've set the phone to 3G prefered. Looks instantly better. Signal strength is also better.
Provider: Simyo (KPN network) - The Netherlands
Edit - Issue solved:
I switched from the Lollipop Baltic ROM to the Lollipop KPN carrier ROM for The Netherlands. The switching is gone for me. Battery life drastically went up.
Any update on this? I just started experiencing this issue out of no where about 2 weeks ago. I'm not rooted or anything, can't afford to due to job security requirements and such.

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