E6553 T-Mobile Band 12 support - Xperia Z4/Z3+ Q&A, Help & Troubleshooting

According to the whitesheets the E6553 is supposed to support band 12. However mine never seems to use it. It's always on band 4. I'm in the Houston area, and its supposed to have rolled out here already. Does anyone else have a E6553 and actually have used band 12?
Oh and I'm using LTE Discovery to check.

Kabbage said:
According to the whitesheets the E6553 is supposed to support band 12. However mine never seems to use it. It's always on band 4. I'm in the Houston area, and its supposed to have rolled out here already. Does anyone else have a E6553 and actually have used band 12?
Oh and I'm using LTE Discovery to check.
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Click to collapse
mine says band 12. I'm on t-mobile in the north Philadelphia area

pikeylfc said:
mine says band 12. I'm on t-mobile in the north Philadelphia area
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Thanks, I was driving around and noticed it use band 12 finally. I guess only a fraction of the towers have band 12, and at my house and work there's only band 4. I wish they had it at work though, our lunchroom has really bad signal penetration...

Kabbage said:
Thanks, I was driving around and noticed it use band 12 finally. I guess only a fraction of the towers have band 12, and at my house and work there's only band 4. I wish they had it at work though, our lunchroom has really bad signal penetration...
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Ya sadly where I've moved to in NJ has horrible LTE coverage

It only switches to Band 12 if you are inside a building where it can't pick up a Band 4 signal or if you are in an area where there is only a Band 12 LTE signal.

Related

[Q] Verizon Bands 4 & 13

Has anyone had issues with their Nexus 6 not wanting to stay on the stronger band? Using LTE Discovery I'll reset the radio, it will connect to band 13 usually between -90 and -94dBm, then after a couple of minutes it will jump to band 4 and sit at -105 to -108dBm. Is the phone making the decision to jump to band 4, or does the tower make that decision? I currently have the phone set to the LTE only mode, would I be better off in the Global mode?
You can leave the phone in global mode, and LTE discovery shows I am connected to band 13, and stay connected.
From what I have read band 4 is AWS aka XLTE . AWS is capable of higher speeds so I'm curious why would you want to switch to the slower band?
Because the slower band has poor reception.
I leave mine in global as when I am at home I cannot get band 4 and signal at my house is not good however when I am at work i'm on band 4 all day.
Omen87 said:
Because the slower band has poor reception.
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Click to collapse
Do you mean better reception?
zetsumeikuro said:
Do you mean better reception?
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Haha, yes I did. Sorry about that.
Omen87 said:
Haha, yes I did. Sorry about that.
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Click to collapse
Lol, I figured. Hope it works out for you!

Note 4 - TMobile 700Mhz LTE Band 12 Question

I live in the Twin Cities and according to the 700Mhz map, T-Mobile has deployed Band 12 in my area. Is band 12 supposed to be faster and better? Or is band 12 just to help penetrate buildings and cover rural areas?
I'm debating if a phone upgrade is in order based on Band 12 feature.
Thanks!
PowerMan572 said:
I live in the Twin Cities and according to the 700Mhz map, T-Mobile has deployed Band 12 in my area. Is band 12 supposed to be faster and better? Or is band 12 just to help penetrate buildings and cover rural areas?
I'm debating if a phone upgrade is in order based on Band 12 feature.
Thanks!
Click to expand...
Click to collapse
To my understanding Band 12 is suppose to just help penetrate building so that you can maintain a signal. I would have posted a link for those also wondering about this subject, but since my profile is new on XDA, I can't post links yet

T-Mobile LTE signal

I just got the phone on Monday. With the original ROM and after taking several OTA updates, my LTE signal strength at home and at work was horrible. I'd get around -120 dBm and it would frequently change to HSPA and even EVDO.
One thing that I noticed is that on LTE, it was using band 4, which is 2100 MHz. On my Note 2, it always used band 14, which is 700 MHz. The lower frequency penetrates buildings better and gave me a better signal at work and home (not great, but useable).
I just updated to the latest T-Mobile ROM from the developer site. The LTE signal strength is a bit better at -116 dBm and so far, it isn't changing to HSPA or worse. However, it is still using band 4.
Does anyone know why my old phone used band 14 and this new phone uses band 4? I would think that the phone would use whichever band gave it the best signal, which would certainly be band 14. Is there any way to force this?
Thanks.
I didn't look up the Note 2's specs but I'd guess it didn't have band 4. What are you using to see your band? OpenSignal?
Powell730 said:
I didn't look up the Note 2's specs but I'd guess it didn't have band 4. What are you using to see your band? OpenSignal?
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I just looked up the specs on Wikipedia. It says that the T-Mobile version uses band 17, but I know that the phone said band 14 before I swapped SIMs.
Wikipedia says the Nexus 6 uses bands 2 / 3 / 4 / 5 / 7 / 12 / 13 / 17 / 25 / 26 / 29 / 41.
This is from the T-Mobile Support site: "TMO uses bands 2 and 4 on LTE/4G & 3G". Also from Support: "LTE band 4(1700/2100), 17(700)". I'm not sure what to believe, or what is in use around here. Like I said above, I know that the Note 2 said it was using band 14.
On the Nexus 6, I'm using an app called LTE Discovery.
T mobile only uses band 2,4,12 for LTE. The note 2 doesn't support band 12. I never heard of band 14.
Sent from my Nexus 6 using Tapatalk
mojoehand said:
I just looked up the specs on Wikipedia. It says that the T-Mobile version uses band 17, but I know that the phone said band 14 before I swapped SIMs.
Wikipedia says the Nexus 6 uses bands 2 / 3 / 4 / 5 / 7 / 12 / 13 / 17 / 25 / 26 / 29 / 41.
This is from the T-Mobile Support site: "TMO uses bands 2 and 4 on LTE/4G & 3G". Also from Support: "LTE band 4(1700/2100), 17(700)". I'm not sure what to believe, or what is in use around here. Like I said above, I know that the Note 2 said it was using band 14.
On the Nexus 6, I'm using an app called LTE Discovery.
Click to expand...
Click to collapse
I'm by no means an expert when it comes to bands/frequencies, however, if the app told you the Note 2 was on band 14, I think it was lying to you. I'm pretty sure there isn't even a band 14 in the U.S., and almost positive T-Mobile does not run LTE on that band.
When (if) band 12 reaches your neighborhood receiption indoors should improve drastically. On band 4 I usually get -109 to -101 dBm. On band 12 I get around -89 to -94 dBm.
I have tried different ROMs and different radio modems. Nothing I do gets me a decent signal. Very occasionally I have had a moderately strong LTE signal, but even then, the download speed is only usable and the upload speed sucks.
The phone doesn't stay on LTE for long. It switched to HSPA and even EVDO most of the time. On HSPA, my old Note 2 got at least 2 Mb downloads. This N6 can't even get a kilobyte down on HSPA.
I don't know if it really affects things, but I read some comments that a bad SIM could possibly cause this. Is this true? If so, I'll drop by the T-Mobile store again and ask them to try another SIM.
I love the phone for the big screen and other features, but I really can't live with this lousy data connection. If I can't get this resolved, I'll have to return the N6 and buy another phone.
I might consider a Note 5 if I have to. It only has a 5.7 inch screen, but my Note 2 had a 5.5 incher. I don't really use the pen and the price premium is high, but I don't know what other phones have a 5.7-6 inch display, except for some Chinese phones. I don't know if they are any good, or if I could use them on T-Mobile.
Call me frustrated.
have you verified apn settings? mine needed a few changes. band 12 should be rolling out soon. i saw it for a day here in portland and service was amazing. can't wait!
nigelorion said:
have you verified apn settings? mine needed a few changes. band 12 should be rolling out soon. i saw it for a day here in portland and service was amazing. can't wait!
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Anyway to see where band 12 is going live?
Sent from my SM-G920T using Tapatalk
Powell730 said:
Anyway to see where band 12 is going live?
Sent from my SM-G920T using Tapatalk
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not sure. saw a few people on reddit mentioning they had seen it in my area. i have been using an app called lte discovery to check what band i am on. 12 only popped up once and haven't seen it since.
mojoehand said:
I have tried different ROMs and different radio modems. Nothing I do gets me a decent signal. Very occasionally I have had a moderately strong LTE signal, but even then, the download speed is only usable and the upload speed sucks.
The phone doesn't stay on LTE for long. It switched to HSPA and even EVDO most of the time. On HSPA, my old Note 2 got at least 2 Mb downloads. This N6 can't even get a kilobyte down on HSPA.
I don't know if it really affects things, but I read some comments that a bad SIM could possibly cause this. Is this true? If so, I'll drop by the T-Mobile store again and ask them to try another SIM.
I love the phone for the big screen and other features, but I really can't live with this lousy data connection. If I can't get this resolved, I'll have to return the N6 and buy another phone.
I might consider a Note 5 if I have to. It only has a 5.7 inch screen, but my Note 2 had a 5.5 incher. I don't really use the pen and the price premium is high, but I don't know what other phones have a 5.7-6 inch display, except for some Chinese phones. I don't know if they are any good, or if I could use them on T-Mobile.
Call me frustrated.
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Are you sure that you're on T-Mobile? EVDO is CDMA network and T-Mobile is GSM...
Sent from my Nexus 6 using Tapatalk
BigDig said:
Are you sure that you're on T-Mobile? EVDO is CDMA network and T-Mobile is GSM...
Sent from my Nexus 6 using Tapatalk
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Yes, I am on T-Mobile. I meant Edge, not EVDO. Too many acronyms.
I just got home and even though the phone is currently showing three bars on LTE, the signal level is only -118 dBm, which isn't good. Speed test won't even do 1/2 Mb/s on download. This is pathetic.
As much as I otherwise like this phone, I can't live with this lousy signal issue. Unless someone knows of a fix, I will have to return the phone to Amazon. As I said, I have tried different ROMS and modems. I have also tried changing various settings that others have suggested (clearing cache, APN settings, etc.). I don't know what else to do.
mojoehand said:
Yes, I am on T-Mobile. I meant Edge, not EVDO. Too many acronyms.
I just got home and even though the phone is currently showing three bars on LTE, the signal level is only -118 dBm, which isn't good. Speed test won't even do 1/2 Mb/s on download. This is pathetic.
As much as I otherwise like this phone, I can't live with this lousy signal issue. Unless someone knows of a fix, I will have to return the phone to Amazon. As I said, I have tried different ROMS and modems. I have also tried changing various settings that others have suggested (clearing cache, APN settings, etc.). I don't know what else to do.
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Have you tried calling tmobile and trouble shooting with them?
Andromendous said:
Have you tried calling tmobile and trouble shooting with them?
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Yes, I've been to the store.
mojoehand said:
Yes, I've been to the store.
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Call and speak to tech support. Most people in the store don't know what there doing.
Sent from my Nexus 6 using XDA Free mobile app
mojoehand said:
Yes, I've been to the store.
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Click to collapse
Or chat with t force on twitter. I have had great success with them. They're awesome.
Sent from my SM-G920T using Tapatalk
Because of the choppy voice calls, as well as the lousy data connection, I am returning this phone and getting a Note 5. Although it is my personal phone, I also need a reliable phone for when I am on call at work.
I have spent all week on this and can't waste any more time. I need something that works. My Note 2 was reliable. I hope the Note 5 will be also.
Thanks to all for suggestions.
I too am having LTE data connection issues on LYZ28K. Anyone on LMY48M having data issues? I tried setting phone info to "LTE only", but that didn't help. I don't need wifi calling, so I'm wondering if I should switch to LMY48M?

Android M LTE bands check?

Hi Guys,
I had hard times finding how to get the MRA58X T-Mobile version of Android M, and by the time I got it, I'm not sure I'm getting Band 12.
I tried checking it using *#*#33284## but it doesn't seems to work. Do you have any idea how can I check it?
Thanks
fabiansc said:
Do you have any idea how can I check it? Thanks
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There is an app for that.
and youll only get it if tmobile has it in your area. i always get band 4, as im right outside band 12 coverage.
fabiansc said:
Hi Guys,
I had hard times finding how to get the MRA58X T-Mobile version of Android M, and by the time I got it, I'm not sure I'm getting Band 12.
I tried checking it using *#*#33284## but it doesn't seems to work. Do you have any idea how can I check it?
Thanks
Click to expand...
Click to collapse
unlike what less informed posters may say there IS an app for that... https://play.google.com/store/apps/details?id=com.blueline.signalchecklite I'm able to check what band I'm on with this app by looking next to the "sprint" carrier name it will say what band it's on (B41/B25) except while on band 26 since it's the default band they had before doing the multiple band thing, tmo should work the same, alternatively in the same app the frequency of the LTE will appear next to the "LTE" network descriptor no matter what band it's on (mine says LTE 2500 since it's on band 41 which uses 2500MHZ)
fabiansc said:
Hi Guys,
I had hard times finding how to get the MRA58X T-Mobile version of Android M, and by the time I got it, I'm not sure I'm getting Band 12.
I tried checking it using *#*#33284## but it doesn't seems to work. Do you have any idea how can I check it?
Thanks
Click to expand...
Click to collapse
I always use the SignalCheck app. There is a free version and a paid version.
Thank you guys for your responses.
I actually live in the Bay Area at Stanford so I guess I should have B12 according to the coverage map.
I don't see it though, on both apps I just see the B4. Could it be that the Band4 signal is stronger and that's why I don't see the band 12 as well?
I remember that when I received the phone it had like a T-Mobile app and I had it until I upgraded to Android M on my own, now when I downgraded and upgraded to MRA58X I couldn't see that app again. Could there be anything connection between the two or should it be enough if I just have that firmware installed?
you'll get the bands if they're in the area, apps don't mess with connection on that level... b4 is faster and has more room for tons of subscribers (1700 mhz), so if your phone can see it it still prefer it to b12 which is slower and narrower (700mhz) however it does penetrate buildings better and go further in the country so it's more reliable. they also have b2 (1900mhz) is faster than b4 and b12 but goes less far from the tower and can barely go through a wall... if your phone can see b2 it will prefer it to bands 4 and 12

T Mobile Band 66 Anyone Connect?

Have a S10+ G975F/DS
Has anyone connected to Band 66 yet on TMobile in the States?
This device seems to want to squat on either band 2 or 4. Every once in a while I can connect to band 12 but the signal is weak.
At home, if I put my sim into my OP6, it immediately connects to Band 66 but no such luck with the S10. Bands 2 and 4 on the same tower are weaker giving me only 96-102 dbm while the 66 band is around 85-92 dbm.
This device seems to squat on weaker bands and IMO overall the signal strength within the device is horrible.
So nobody has yet to connect to band 66..... Is Samsung lying that the band is actually active in the device?
Does *#band# in dialer work? Let's you pick bands.
tyrone1 said:
Does *#band# in dialer work? Let's you pick bands.
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Click to collapse
Yes, but that doesn't really help as it only gives you a partial answer. Band 66 in some areas has a stronger signal where available than 2 or 4 and 66 isn't available in all areas.
So this is happening.... went in to LTE settings and selected one band at a time to connect to...
Device constantly squats on either band 2 or 4, however Band 12 or 66 is available as well. Band 12 connected at 80-85 dbm yet once again when auto is selected device reverts to connecting to band 2 or 4 between 97-105 dbm. Talk to Samsung and they keep repeating the mantra of the software will connect to the strongest band.... Clearly not the truth.
Connect to Band 66, even worse than 2 or 4 at 115 dbm. Yet take out sim, put it into my OP6 and connect to Band 66 on the same tower back to 85-92 dbm
So it appears not only does Samsung have a coding issue but they have pulled a bait and switch on hardware.
floridaman said:
Yes, but that doesn't really help as it only gives you a partial answer. Band 66 in some areas has a stronger signal where available than 2 or 4 and 66 isn't available in all areas.
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Just turn off band 2 and 4 and youll be on 66 since it so important.
tyrone1 said:
Just turn off band 2 and 4 and youll be on 66 since it so important.
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Click to collapse
I love when people attempt at snark and being a total D**K , yet seem to have a problem with reading comprehension. Clearly Band 66 doesn't work, but that would have required you to actually read something before your attempt at trolling the board with insults.
floridaman said:
I love when people attempt at snark and being a total D**K , yet seem to have a problem with reading comprehension. Clearly Band 66 doesn't work, but that would have required you to actually read something before your attempt at trolling the board with insults.
Click to expand...
Click to collapse
Sorry...
I on tmobile with the U version and band 66 works for me. I turned all bands of except 66 and I get lte+.
Hope that helps. I guess the F / DS ain't work on band 66.

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