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Bug #1725

open

iPhone6 network selection issue with GSM1900

Added by zecke over 5 years ago. Updated almost 4 years ago.

Status:
Stalled
Priority:
Low
Assignee:
-
Category:
-
Target version:
-
Start date:
05/17/2016
Due date:
% Done:

0%

Spec Reference:

Description

We have some form of issue with the iPhone 6S (we can use messenger to move it around). Now the iPhone is a really bad phone (manual network selection not re-scanning, selecting it not trying to access the network in a reasonable amount of time). But what I can re-produce:

  • Put customer IMSI in the phone
  • Wait for the network to be selected
  • Enter airplane mode
  • Leave airplane mode

Theory:

The LU should lead to the ARFCN be written to the SIM card. This ARFCN should be tried after the airplane mode (or reboot) is used. But the phone ends up in "No Service". I make my tests with with a RevA hardware and maybe slightly incorrect calibration but other phones behave a lot better.

Reality:

What happens is that after the airplane mode.. the phone does not select a network (It goes to Searching and then prints No Network). Toggling "Automatic" to "Manual" network seaearch it sometimes starts to connect it (after many many minutes).

Stats:

iPhone 6s
Version 9.3.2 (14F69)
Carrier 24.0
Model MKQK2ZD/A
Modem Firmware 1.60.00

For reference the SIs of another small network at 1900

SI1 5506198f0e0000000000000000000000000000bb00006b
SI2 59061a00000000000000000000000000000000ffbb0000
SI3 49061b9c4072f480101949030f07c346bb00008000832b
SI4 41061c72f4801019c346bb00006430021c80008b2b2b2b
SI13 <empty>
SI5 49061d10000000000000000000000000000000
SI6 2d061e9c4072f480101997ff3b2b2b2b2b2b2b
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