REPRODUCIBILITY (% or how often): 100%
BUILD ID = OS VERSION (Settings > About product): 4.3
HARDWARE (XA2, X10, X10 II, …): Xperia 10ii
UI LANGUAGE: ANY
REGRESSION: (compared to previous public release: Yes, No, ?): ?
Unfortunately some countries spontaneously decide to change the start of summertime, while leaving or forgetting their network on the original date/ time. Now one obviously has to adjust time settings manually by disabling “automatic update” and setting real local time. Unfortunately after using airplane mode and re-entering the 4G network, the phone updates its time to the local (but wrong) network time without asking and despite being in manual mode.
- set date/time to manual in a country with unusual network time offset, e.g. by spontaneously deciding to start summertime a few weeks earlier than planned
- put phone in airplane mode, wait 15 seconds, switch back online
- time jumps to current network time, which is not the real time (seems it must have updated itself from the network, despite manual preference)
keep manual settings as is, do not use network or internet time updates on network-entry
it sets the time to what the local network seems to be on
(Please ALWAYS attach relevant data such as logs, screenshots, etc…)