4 ms·

I've been to Japan, and my iPhone didn't make any shutter sounds while I was there.

deleted 12y ago
[deleted]
gurkendoktor 12y ago
Now the question is - how would the iPhone even know that's in Japan? :) GPS? I think OS X uses the time zone for these things, e.g. to block certain WiFi channels due to legal requirements.
- tacotime 12y ago
  Well, it is a phone... It's going to have access to geo data from the local cell phone towers, no timezone hacks necessary. In fact I believe the iPhone adjusts your active timezone automatically according to the geo data collected from the local cell tower, hence why your phone time changes when you touch down after a long flight.
  - eigenvector 12y ago
    Actually the time update is not based on inference from location data, but rather it is actively transmitted by the cell network as part of the GSM standard. http://en.wikipedia.org/wiki/NITZ http://en.wikipedia.org/wiki/NITZ
    - BuildTheRobots 12y ago
      Though it's possibly worth pointing out that time/date is not a _requirement_ to the standard and not all networks implement it. It's possibly also worth pointing out that most recent Android devices seem to use NTP at the OS level rather than relying on GSM broadcast info.
  - lucaspiller 12y ago
    As the other poster said, time has it's own standard. In terms of your reply to OP, it's even simpler. The network identifier for an operator broadcast by the cell tower consists of a network code and a country code :)
- praseodym 12y ago
  Actually blocking WiFi channels is done through the 802.11d information element in WiFi beacons which specify what the country the access point is in.
  - gurkendoktor 12y ago
    Maybe it is also transmitted that way, but changing the time zone from Australia from New Guinea has repeatedly fixed my OS X WiFi issues when a Chinese roommate used an illegal channel (in Australia).
- mobiplayer 12y ago
  It will be connected to a telco network, right? That's how it knows in what country it is. In Europe it is quite common to cross countries borders and as soon as you get connected to your neighbours telco you get a text welcoming you to the country.
  - gurkendoktor 12y ago
    But then they'd have to come up with a different solution for the iPod touch :)

deleted 12y ago

[deleted]

Now the question is - how would the iPhone even know that's in Japan? :) GPS? I think OS X uses the time zone for these things, e.g. to block certain WiFi channels due to legal requirements.

tacotime 12y ago
Well, it is a phone... It's going to have access to geo data from the local cell phone towers, no timezone hacks necessary. In fact I believe the iPhone adjusts your active timezone automatically according to the geo data collected from the local cell tower, hence why your phone time changes when you touch down after a long flight.
- eigenvector 12y ago
  Actually the time update is not based on inference from location data, but rather it is actively transmitted by the cell network as part of the GSM standard. http://en.wikipedia.org/wiki/NITZ http://en.wikipedia.org/wiki/NITZ
  - BuildTheRobots 12y ago
    Though it's possibly worth pointing out that time/date is not a _requirement_ to the standard and not all networks implement it. It's possibly also worth pointing out that most recent Android devices seem to use NTP at the OS level rather than relying on GSM broadcast info.
- lucaspiller 12y ago
  As the other poster said, time has it's own standard. In terms of your reply to OP, it's even simpler. The network identifier for an operator broadcast by the cell tower consists of a network code and a country code :)
praseodym 12y ago
Actually blocking WiFi channels is done through the 802.11d information element in WiFi beacons which specify what the country the access point is in.
- gurkendoktor 12y ago
  Maybe it is also transmitted that way, but changing the time zone from Australia from New Guinea has repeatedly fixed my OS X WiFi issues when a Chinese roommate used an illegal channel (in Australia).
mobiplayer 12y ago
It will be connected to a telco network, right? That's how it knows in what country it is. In Europe it is quite common to cross countries borders and as soon as you get connected to your neighbours telco you get a text welcoming you to the country.
- gurkendoktor 12y ago
  But then they'd have to come up with a different solution for the iPod touch :)