General USA model not actually a 5G phone

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kevinmcmurtrie

Senior Member
Aug 22, 2015
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62

viper.

Senior Member
Feb 10, 2010
328
53
ZAGREB
Motorola Defy
LG V30
I am considering buying this phone or 5 as it got cheaper 600 $. Is this still a big issue..or is it issue at all,(not really that i care for 5g) ? does it help if you flash xq-bc62 firmware on xq-bc72 phone or is it any good to get xqbc62 from start? Also thinking of having it on tmo mvno network in the US.
 

kevinmcmurtrie

Senior Member
Aug 22, 2015
165
62
Cellular performance on T-Mobile remains so poor that it has me looking for another phone.

There's slight 5G support but it mostly uses LTE with the 5G indicator on. It can use NR71 but not as the extended range band it's meant to be. It can't maintain stable voice calls while walking because it's selecting bad channel aggregations. The Xperias are forbidden on US Cellular so there's no roaming in small rural towns.
 
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viper.

Senior Member
Feb 10, 2010
328
53
ZAGREB
Motorola Defy
LG V30
apperently IV supports all bands according kimovil.com and its already released on some markets mainly UK .

I wouldnt even think of going into this frequncy **** but it seems xperias are the only normal phones in phone industry,no selfy punch hole, microsd support,3.5mm jack...

do you even know what band it uses in day to day or just wild guessing , do you have an app to check the frequency of the nearby tower? I am using NetMonster its free and simple to use and it shows usefull data i have LG v30 which only works on 1900mhz on tmobile
 
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kevinmcmurtrie

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Aug 22, 2015
165
62
T-Mo uses LTE 66, LTE 2, and NR 41 for urban speed. NR 71 and LTE 71 are long range. LTE 12 is an urban gap filler. LTE 5 is used in other areas. (NR 258, 260, 261 are urban speed bands in the mm wave region)

I have an app that shows the current band use. My Xperia 1 III likes to use LTE 66 + NR 71. When LTE 66 drops, it's dead from not being able to use NR 71 alone. It may jump to LTE 2 + NR 71, which is no more stable. It takes a long time to get onto LTE 12 or LTE 71 and it doesn't use them in aggregation with faster bands even though it should be capable.

NR 41 often causes the phone to not work at all.

US Cellular is a domestic roaming partner and they don't allow the Xperia. The provider says "Forbidden" and T-Mo confirmed that it's caused by the phone model.

My LG Velvet 5G is usually on LTE 2 + LTE 66 + NR 71 and it works fine with only NR 71.
 
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viper.

Senior Member
Feb 10, 2010
328
53
ZAGREB
Motorola Defy
LG V30
Yeah...i ll stick with NetMonster it shows way more stuff in free version. Also you get the quick shortcut to phone info which you would normally access by dialing *#*#4636#*#*
 

Ainz_Ooal_Gown

Senior Member
Feb 3, 2013
3,899
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Los Osos
Sony Xperia 1 III
Here's what I get on Signal Monster (including a screenshot from phone info)...mind you I'm on Metro PCS with the XQ-BC72 I'm also running the one Custom Kernel...
 

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  • 3
    Excuse my 5G ignorance but...I use T-Mobile here in the US. I have 5G all day long if I want it. I rarely use it though because even though speed tests show that 5G is faster than LTE it also uses more battery. Also, there are times that while using 5G web pages load slower and YouTube videos buffer whereas when using LTE I have none of those issues. So while I agree that 5G is more gimmick than anything (for me) I still can connect to 5G without any issues at all so I am not sure what to think about the so-called Sony support answers????
    There are two types of 5G.

    Early phones had "non standalone" meaning that NR was only a temporary booster. The phone shows "5G" all the time but it's only momentarily connecting and disconnecting NR while keeping LTE on. These phones don't know how to use NR by itself or for phone calls. This sucks battery life and it causes stalls in data transfer.

    Modern phones have "standalone" 5G. This means that the phone can use any mix of NR and LTE together all the time, including only NR. There's no switching and the phone can use whatever works best.

    My T-Mo Velvet 5G got a huge performance boost in cell data when it received the SA update. Lag and dropouts around town were 100% gone . When walking around town, it's on LTE 2 + LTE 66 + NR 71. It can lose any two of those bands and be fine. It beats any LTE phone in stability. (RF absorbing stucco houses around here)

    My new Sony has a MUCH faster CPU but it's a step back in cell performance. It's using LTE 2 or 66 (not both) and switching NR 71 on and off for data transfer. I frequently take it out of my pocket and see that it has no cell reception. Signal Check says it has NR 71 and is trying to connect to LTE.

    I'm hoping a software update eventually fixes this. Much like the fingerprint reader crashes, this is a shameful launch for Sony.
    3
    Yes you can choose to NOT use 5G on this phone. I have turned it on/off several times and while speed tests show 5G as faster than LTE ... it uses more battery, and YouTube videos will buffer and web pages load more slowly??? Whereas on LTE none of those issues appear. So for now, at least on the 1 mark 3 - 5G is useless. Sad really but for me LTE runs everything just fine and fast!
    2
    If this information is up-to-date, Sony disabled NR SA on all the bands used by T-Mobile.
    This is weird because only T-Mobile has good NR SA coverage in the US.
    I'm the one who dumped the hardware band and combo support listed here. Can confirm NR-SA n41 and n71 are entirely missing from the modem firmware on the US Xperia 1 III. I've e-mailed the contact at Sony who submitted the FCC certification for the device, but never received a response.
    1
    5G isn't all that great yet, maybe never.
    More limited range and more obstacle intolerant than 4G. Average users see a 20% speed increase when in range.
    Don't sweat it...
    1
    T-Mo uses LTE 66, LTE 2, and NR 41 for urban speed. NR 71 and LTE 71 are long range. LTE 12 is an urban gap filler. LTE 5 is used in other areas. (NR 258, 260, 261 are urban speed bands in the mm wave region)

    I have an app that shows the current band use. My Xperia 1 III likes to use LTE 66 + NR 71. When LTE 66 drops, it's dead from not being able to use NR 71 alone. It may jump to LTE 2 + NR 71, which is no more stable. It takes a long time to get onto LTE 12 or LTE 71 and it doesn't use them in aggregation with faster bands even though it should be capable.

    NR 41 often causes the phone to not work at all.

    US Cellular is a domestic roaming partner and they don't allow the Xperia. The provider says "Forbidden" and T-Mo confirmed that it's caused by the phone model.

    My LG Velvet 5G is usually on LTE 2 + LTE 66 + NR 71 and it works fine with only NR 71.