iPhone XS iPhone Xs and iPhone Xs Max Antenna Issues Build Date

rebretz000

macrumors regular
Original poster
Sep 29, 2018
164
144
I am curious to see if there is any pattern to the phones that have problems and those that don't. Please post the phone type you have, Xs or Xs Max, storage option, color, and who/where you purchased it from. And based on the chart please indicate the factory and date of your phones build. And obviously indicate if your phone is fine or if you have problems with data/signal/wifi.

Thank you
screenshot-www.3u.com-2018.10.09-12-58-27.png
 

lex22

macrumors member
Sep 14, 2015
42
55
Xs (non max)
256 GB
Slate Gray
Verizon preorder
Chengdu
2nd half of 2018
9/9-9/15 (fifth letter is a D)
Terrible LTE
 

rebretz000

macrumors regular
Original poster
Sep 29, 2018
164
144
Xs (non Max)
64 GB
Sliver
Apple Online
Foxxcon, Shenzhen, China
2nd Half 2018
8/19 – 8/25

Yellow Screen, Horrible signal, dbm extremely low or high depending on how you take it, bluetooth wouldn't connect to fitbit.
 
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minicard

macrumors regular
Oct 31, 2014
218
71
Oregon
Xs, 256 Gb, SG,
CXD.
Only problem was Wifi connecting to 2.4 Ghz but was fixed with 12.0.1 update.
 

rjjacobson

macrumors 65816
Sep 12, 2014
1,076
551
I am curious to see if there is any pattern to the phones that have problems and those that don't. Please post the phone type you have, Xs or Xs Max, storage option, color, and who/where you purchased it from. And based on the chart please indicate the factory and date of your phones build. And obviously indicate if your phone is fine or if you have problems with data/signal/wifi.

Thank you
View attachment 793610
Xs, slate gray, 256gb, AT&T
Shenzhen
Second half 2018
8th week 8-19 to 8-25
Apple upgrade program opening day arrival

I found 5 ghz weak and not workable outside of house, ok inside
The 12.01 upgrade fixes this problem
LTE works like normal although it seems a bit better (I live in weak signal area)
 
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Banglazed

macrumors 68040
Apr 17, 2017
3,351
3,537
Cupertino, CA
Apple.com 256 Gold Max Zhenzhou 2nd half year 8th week Sim-free on T-Mobile network. Weaker cellular strength compared to Qualcomm X but pretty good download speed. It is possible to confirm signal strength using Field Test
 
Last edited:

Sci_Tech

macrumors member
Sep 14, 2016
74
27
SoCal
XS
256GB
Space Gray
From Verizon (launch day)
Shanghai
2nd half of 2018
9/2-9/8 (10th week)
Crappy LTE signal

Edit: Forgot to mention my WiFi and charging issues were fixed on 12.0.1
 
Last edited:

DotCom2

macrumors 601
Feb 22, 2009
4,301
2,607
XS Max
64 Silver
AT&T
Ordered 9-24 Delivered 9-28
Zhengzhou
2nd half 2018
12th week 9/16-9/22
Terrible LTE
Also had the WiFi issue and charge issue but was fixed in last update.
I will be retuning this phone for a refund tomorrow and purchasing a sim free version.
I will keep it the 14 days to see what happens.
if this one is also faulty I will make a descision then.

Edited to state I am in the USA
 
Last edited:

Lilydgg

macrumors member
Sep 20, 2014
40
8
xs
64gb
ATT
F-zengzhou
X
C 9/2-9/8


No noted issues yet, have had it about a week now

ETA, the wife also has a XS, same location and build date also with no issues.
 

HeadphoneAddict

macrumors 6502a
Sep 16, 2007
969
809
Xs Max on iOS 12.0.1
512 GB
Silver
AT&T through Apple.com preorder
F2XL9... SERIAL
ZHENGZHOU
2nd half of 2018
9TH week 8/26-9/1
LTE fine, same as my other iPhones

Clarifications:

LTE - Decent service and performance vs our Qualcomm iPhone X and 7 on AT&T, and much better than our iPhone 6 on Ting.com Mobile. Our Cheyenne Mountain neighborhood has notoriously poor cell service on LTE, and we get 1 bar with AT&T or Ting (I think it's an MVNO on T-Mo, costs me $6/mo if I don't use the spare phone).

The Xs Max runs typically about 1-2 mbps at the house with 1 bar LTE, just like all our previous AT&T iPhones having 1 bar LTE (the 6 on Ting has 1 bar). But I got 30-50 mbps with the Xs Max in downtown Colorado Springs, and 80-90 mbps in Denver. With a decent signal my iPhone X is usually about 60-80% as fast as the Xs.

Here at home right now as I type, the Xs Max on AT&T gave me 1.47 down / 0.40 up, and my X ran 1.70 down / 0.01 up. However, the iPhone 6 on Ting.com wireless LTE just ran 0.15 down / 0.07 up. Proof my neighborhood LTE sucks.

My Xs will drop to 4G more easily when the LTE signal gets too low, while my X tends to hand onto 1 bar of LTE even when the data speeds would be slower than 4G. That's why I usually just turn off LTE on the X when I get home, in case I take it with me on a walk without WiFi.

WiFi - after the 12.0.1 update, WiFi on 2.4/5.0 Ghz Time Capsule jumped from 25-30mbps to now 180-200 mbps, like the X, while the iPhone 6 is consistently at 25-30 mbps on the time capsule.
 
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Baldilocks

macrumors 6502
Jan 2, 2012
416
337
Delaware, USA
XS Max on iOS 12.0.1
256 GB
Space Gray
AT&T Model (Pre-Order)
F2LXC (10th week)

No problems prior to the 12.0.1 update and it didn't really make any changes to the performance. Both Wi-Fi and LTE are working great. WiFi performance is especially greater than my X in the same locations, usually by as much as 50%.
 

blwade

macrumors 6502a
Sep 16, 2014
537
239
XS Max
256 GB
Space Gray
Ordered through Verizon
Zhengzou
2nd Half 2018
9/16 - 9/22

LTE speeds coming in about 30% less than my previous Verizon iPhone 7+ but do not seem to have an issue with dropped signal (also no issues with WiFi, yellow screen, etc)
 

GIRO150

macrumors newbie
Oct 9, 2018
1
1
XS MAX T-mobile factory unlock
256 GB
GOLD
Got at apple store 2nd week after release
Zhengzhou 12th week

Having horrible LTE connection at home always had full bars with samsung phones..This one only getting 2 or 3 bars at most. Looking at signal level for LTE. Samsung has a -96 which is good and Iphone xs max has -110 which according to LTE chart fall between fair to poor almost.. wifi had issue with 5 ghz..some issue resolve on 12.0.1 but main issue where 5ghz is just very weak compare to other apple product, persist. I live in a small apartment and all my devices get 5ghz at every single corner not that max. Max struggle to get a good signal on 5ghz..

As a result of course I'm having a lot of drop calls at home where in 10 year I never had a drop call at my location...

Furthermore about LTE sometimes you can be in on spot and have full bar and then next second you barely have service...It look like phone is not connecting to right band at times...
 
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Kimmie92592

macrumors member
Feb 13, 2013
57
21
California
Mine is Zhengzhou
2nd half of 2018
10th week
9/2 to 9/8
T-Mobile
Having unusability in iffy cellular area when my old iPhone still works
Bought it from T-Mobile
Gold 256 gb
 

Kristine

macrumors 6502a
Feb 21, 2005
599
173
iPhone: Xs Max
Colour: Gold
Storage: 64GB
Country: Australia
Carrier: Telstra
Serial: G6VX8...
Factory: Shenzhen
Build Year: 2nd half year, 2018
Build Week: 8th week
Build Date: 19/8 - 25/8

Other Details
  • Perfectly uniform (warm) screen with minimal blue shift
  • Charging issue (resolved)
  • Poor signal, disabled Wi-Fi calling - no longer call drop outs
  • Terrible data speeds
  • Latest iOS beta installed
 

Attachments

Last edited:

rebretz000

macrumors regular
Original poster
Sep 29, 2018
164
144
I have two new Xs phones coming tomorrow. Both are from the new Foxconn factory in Shanghai. One was built week 9 and one week 12 so we'll see what happens. I figured I'd take another chance since I have to drive to an Apple store next week to get my step-dads iPhone battery replaced for him.
 

bad03xtreme

macrumors 6502a
Jul 16, 2009
591
89
Northern, VA
iPhone: Xs
Color: Space Grey
Storage: 64GB
Country: USA
Carrier: Verizon
Serial: F17XD0...
Factory: Zhenzhou
Build Year: 2nd half year, 2018
Build Week: 11th week
Build Date: 9/9 - 9/15

Poor wi-fi connectivity
 

Martyimac

macrumors 68000
Aug 19, 2009
1,903
1,246
S. AZ.
XS
Schenzhen
2nd half of 2018
11th week
64G
Silver
Purchased direct from  on release day about 0030 hours

No problems with wifi or cellular connectivity
 

stringerhye

macrumors 6502a
Jul 5, 2010
649
187
iPhone: Xs
Color: Space Grey
Storage: 64GB
Country: USA
Carrier: T-Mobile
Serial: DNPX9S
Factory: Chengdu
Build Year: 2nd half year, 2018
Build Week: 9th Week
Build Date: 8/26-9/01

Seems to be working fine. I haven't done any granular tests, but seems to be working as well or better than my X.
 
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Packers1958

macrumors 68000
Apr 16, 2017
1,540
2,025
South Dakota
iPhone: Xs Max
Color: Space Grey
Storage: 512 GB
Country: USA
Carrier: Verizon
Serial: F2LXC
Factory: Zhenzhou
Build Year: 2nd half year, 2018
Build Week: 10th week
Build Date: 9/2-9/8

Poor LTE, wifi ok.
 
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