Location-services - Revision history

IAdam1n: Updating page link.

2015-11-14T11:48:32Z

Updating page link.

IAdam1n: Updating

2015-10-12T10:16:02Z

Updating

IAdam1n: /* iPad baseband 06.15.00 losing GPS function */ Consistency please.

2014-10-19T10:08:14Z

‎iPad baseband 06.15.00 losing GPS function: Consistency please.

Dialexio: Housekeeping. :)

2011-12-27T04:01:09Z

Housekeeping. :)

5urd: added links, and changed external links to wikipedia to interwiki internal

2011-12-26T22:17:37Z

added links, and changed external links to wikipedia to interwiki internal

Http: fixed links I broke in last edit

2011-12-26T21:59:44Z

fixed links I broke in last edit

Http: fixing some typos

2011-12-26T21:47:37Z

fixing some typos

Chrisma: Created page with "location services are a set of different methods to determine the current location of a devices (and its user). This location data might be stored in pictures taken or used for n..."

2011-12-26T21:20:17Z

Created page with "location services are a set of different methods to determine the current location of a devices (and its user). This location data might be stored in pictures taken or used for n..."

New page

location services are a set of different methods to determine the current location of a devices (and its user).
This location data might be stored in pictures taken or used for navigation.
The available methods vary on device type.

== WLAN ==

Signatures (SSIDs) of WLANs in the current location are polled and send to a database which has also the
location information of all known WLANs. Such database services are provided by Google and skyhookwireless. Apple claims that they are
not using these services since IOS 3.2 - and provide a similar service themselves. An active Internet connection
is required to send singatures to the database and get location coordinates in return.
This is the only method used for ipod touch devices.

== A-GPS (Assisted GPS) ==

This method uses GSM/UTMS protocols to quickly identify the approximate current location. The GSM/UMTS network is organized in cells and from currently subscribed cell ID it is possible to get a first guestimate on the current location.
If neighbourhood cells can be taken into account as well a more precise location estimation might be possible. In addition
these direct location information network operators may also provide so-called almanach data for faster satellite GPS synchronisation. Read more details here: [[http://en.wikipedia.org/wiki/Assisted_GPS|Assisted_GPS]].

However, none of these services are mandatory standards. If provided, network operators usually charge
for these services and this is one of the reasons why costs are generated even without initiated phone calls.
Another disadvantage is that reponse is rather inaccurate, at least insufficient for navigation purposes.
Avantages are fast response and coverage in buildings.

== GPS (satellite) ==

Satellite [[http://en.wikipedia.org/wiki/Global_positioning_system|GPS]] GPS is the most accurate method and hence suitable for even navigation purposes. On the other hand it may take up to 10minutes to "fix" and will most likely work only outdoors. In idevices various (different) chipsets are used for GPS but they have all in common that these are controlled by the baseband firmware. So idevices without bandbase don't have GPS, too.

== ipadBB 6.15.00 losing GPS function ==

If an ipad baseband [[6.15.00]] is installed on iphone 3G or 3GS it is resulting in loss of (satellite) GPS functionality.
Reason is that for GSM/UMTS radio function ipad1 and iphone 3G or 3GS using the same GSM/UTMS chipset [[X-Gold 608]] but different
GPS chips: [[BCM4750]] in ipad1 while [[Infineon_PMB2525]] in iphone 3G and 3GS. So the ipad
baseband is (assumingly) not containing a device driver for the Infineon PMB2525 and hence this CPS chip cannot be used.
As [[Baseband]] is totally separated from rest of the iphone logic - only communicating over a serial link - there is
no alternative way to address the unused GPS chip. Meanwhile all hopes have been burried of a downgrade option for
ipad baseband. So if for unlocking a vulnerable baseband firmware is needed always check if an older version of iOS
is installed or can be restored (if SHSH blobs are available) and then using snowbreeze for iOS upgrade without
baseband upgrade. Only if this is no option consider installing ipad baseband.

@@ Line 2: / Line 2: @@
 == WLAN ==
-Signatures (SSIDs) of WLANs in the current location are polled and sent to a database which has also the location information of all known WLANs. Such database services are provided by Google and [http://www.skyhookwireless.com/ Skyhook Wireless]. Apple claims that they are not using these services since [[iOS]] 3.2, in favor of an in-house service.[http://arstechnica.com/apple/news/2010/07/apple-responds-to-congress-swears-location-data-is-private.ars] An active Internet connection is required to send signatures to the database and get location coordinates in return. This is the only method used for [[iPod touch]]es.
+Signatures (SSIDs) of WLANs in the current location are polled and sent to a database which has also the location information of all known WLANs. Such database services are provided by Google and [http://www.skyhookwireless.com/ Skyhook Wireless]. Apple claims that they are not using these services since [[iOS]] 3.2, in favor of an in-house service.[http://arstechnica.com/apple/news/2010/07/apple-responds-to-congress-swears-location-data-is-private.ars] An active Internet connection is required to send signatures to the database and get location coordinates in return. This is the only method used for [[List of iPod touches|iPod touches]].
 == A-GPS ([[wikipedia:Assisted GPS|Assisted GPS]]) ==

← Older revision		Revision as of 10:16, 12 October 2015
Line 13:		Line 13:

	== iPad baseband [[06.15.00]] losing GPS function ==		== iPad baseband [[06.15.00]] losing GPS function ==
−	If the [[~~k48ap~~\|iPad]] baseband [[06.15.00]] is installed on [[~~n82ap~~\|iPhone 3G]] or [[~~n88ap~~\|3GS]] it will result in loss of (satellite) GPS functionality. The reason behind this is the [[~~n82ap~~\|iPhone 3G]], [[~~n88ap~~\|iPhone 3GS]], and [[~~k48ap~~\|iPad]] using the [[X-Gold 608]] for GSM/UMTS communications, but different GPS chips ([[BCM4750]] in the iPad, and [[Infineon PMB2525]] in the [[~~n82ap~~\|iPhone 3G]] and [[~~n88ap~~\|iPhone 3GS]]). So the iPad baseband is presumably missing drivers for the Infineon PMB2525. As [[baseband]] is totally separated from rest of the iPhone logic (they only communicate over a serial link), there is no alternative way to address the unused GPS chip. Meanwhile, all hopes have been buried of a downgrade option for iPad baseband.	+	If the [[K48AP\|iPad]] baseband [[06.15.00]] is installed on [[N82AP\|iPhone 3G]] or [[N88AP\|iPhone 3GS]] it will result in loss of (satellite) GPS functionality. The reason behind this is the [[N82AP\|iPhone 3G]], [[N88AP\|iPhone 3GS]], and [[K48AP\|iPad]] using the [[X-Gold 608]] for GSM/UMTS communications, but different GPS chips ([[BCM4750]] in the iPad, and [[Infineon PMB2525]] in the [[N82AP\|iPhone 3G]] and [[N88AP\|iPhone 3GS]]). So the iPad baseband is presumably missing drivers for the Infineon PMB2525. As [[baseband]] is totally separated from rest of the iPhone logic (they only communicate over a serial link), there is no alternative way to address the unused GPS chip. Meanwhile, all hopes have been buried of a downgrade option for iPad baseband.

← Older revision		Revision as of 10:08, 19 October 2014
Line 13:		Line 13:

	== iPad baseband [[06.15.00]] losing GPS function ==		== iPad baseband [[06.15.00]] losing GPS function ==
−	If the [[k48ap\|iPad 1G]] baseband [[06.15.00]] is installed on [[n82ap\|iPhone 3G]] or [[n88ap\|3GS]] it will result in loss of (satellite) GPS functionality. The reason behind this is the [[n82ap\|iPhone 3G]], [[n88ap\|iPhone 3GS]], and [[k48ap\|iPad 1G]] using the [[X-Gold 608]] for GSM/UMTS communications, but different GPS chips ([[BCM4750]] in the iPad, and [[Infineon PMB2525]] in the [[n82ap\|iPhone 3G]] and [[n88ap\|3GS]]). So the iPad baseband is presumably missing drivers for the Infineon PMB2525. As [[baseband]] is totally separated from rest of the iPhone logic (they only communicate over a serial link), there is no alternative way to address the unused GPS chip. Meanwhile, all hopes have been buried of a downgrade option for iPad baseband.	+	If the [[k48ap\|iPad]] baseband [[06.15.00]] is installed on [[n82ap\|iPhone 3G]] or [[n88ap\|3GS]] it will result in loss of (satellite) GPS functionality. The reason behind this is the [[n82ap\|iPhone 3G]], [[n88ap\|iPhone 3GS]], and [[k48ap\|iPad]] using the [[X-Gold 608]] for GSM/UMTS communications, but different GPS chips ([[BCM4750]] in the iPad, and [[Infineon PMB2525]] in the [[n82ap\|iPhone 3G]] and [[n88ap\|iPhone 3GS]]). So the iPad baseband is presumably missing drivers for the Infineon PMB2525. As [[baseband]] is totally separated from rest of the iPhone logic (they only communicate over a serial link), there is no alternative way to address the unused GPS chip. Meanwhile, all hopes have been buried of a downgrade option for iPad baseband.

@@ Line 1: / Line 1: @@
-Location services are a set of different methods to determine the current location of a devices (and its user).
+Location services are a set of different methods to determine the current location of a devices (and its user). This location data might be stored in pictures taken or used for navigation. The available methods vary on device type.
 == WLAN ==
-== A-GPS (Assisted GPS) ==
+== A-GPS ([[wikipedia:Assisted GPS|Assisted GPS]]) ==
-This method uses GSM/UTMS protocols to quickly identify the approximate current location. The GSM/UMTS network is organized in cells and from currently subscribed cell ID it is possible to get a first guestimate on the current location.
+This method uses GSM/UTMS protocols to quickly identify the approximate current location. The GSM/UMTS network is organized in cells, and from the currently subscribed cell ID it is possible to get a first estimated guess on the current location. If neighbourhood cells can be taken into account as well a more precise location estimation might be possible. In addition, these direct location information network operators may also provide so-called almanach data for faster satellite GPS synchronisation.
-However, none of these services are mandatory standards. If provided, network operators usually charge
+However, none of these services are mandatory standards. If provided, network operators usually charge for these services and this is one of the reasons why costs are generated even without initiated phone calls. Another disadvantage is that response is rather inaccurate, at least insufficient for navigation purposes. Advantages are fast response and coverage in buildings.
 == GPS (satellite) ==
-Satellite {{wp|Global_positioning_system|GPS}} is the most accurate method and hence suitable for even navigation purposes. On the other hand it may take up to 10minutes to &quot;fix&quot; and will most likely work only outdoors. In idevices various (different) chipsets are used for GPS but they have all in common that these are controlled by the baseband firmware. So idevices without bandbase don't have GPS, too.
+Satellite [[wikipedia:Global positioning system|GPS]] is the most accurate method and hence suitable for even navigation purposes. On the other hand it may take up to 10 minutes to "fix" and will most likely work only outdoors. In iDevices, various (different) chipsets are used for GPS, but they are all controlled by the baseband firmware. So if an iDevice doesn't have a baseband, it doesn't have a GPS.
-== iPad [[baseband]] [[06.15.00]] losing GPS function ==
+== iPad baseband [[06.15.00]] losing GPS function ==
-If the [[iPad]] [[baseband]] [[06.15.00]] is installed on [[n82ap|iPhone 3G]] or [[n88ap|3GS]] it will result in loss of (satellite) GPS functionality. The reason is that for GSM/UMTS radio function [[k48ap|iPad 1G]] and [[n82ap|iPhone 3G]] or [[n88ap|3GS]] using the same GSM/UTMS chipset [[X-Gold 608]] but different GPS chips ([[BCM4750]] in iPad 1 while [[Infineon PMB2525]] in the [[n82ap|iPhone 3G]] and [[n88ap|3GS]]). So the iPad baseband is (assumingly) not containing a device driver for the Infineon PMB2525 and hence this CPS chip cannot be used. As [[baseband]] is totally separated from rest of the iPhone logic - only communicating over a serial link - there is no alternative way to address the unused GPS chip. Meanwhile all hopes have been burried of a downgrade option for iPad baseband. So if for unlocking a vulnerable baseband firmware is needed always check if an older version of iOS
+If the [[k48ap|iPad 1G]] baseband [[06.15.00]] is installed on [[n82ap|iPhone 3G]] or [[n88ap|3GS]] it will result in loss of (satellite) GPS functionality. The reason behind this is the [[n82ap|iPhone 3G]], [[n88ap|iPhone 3GS]], and [[k48ap|iPad 1G]] using the [[X-Gold 608]] for GSM/UMTS communications, but different GPS chips ([[BCM4750]] in the iPad, and [[Infineon PMB2525]] in the [[n82ap|iPhone 3G]] and [[n88ap|3GS]]). So the iPad baseband is presumably missing drivers for the Infineon PMB2525. As [[baseband]] is totally separated from rest of the iPhone logic (they only communicate over a serial link), there is no alternative way to address the unused GPS chip. Meanwhile, all hopes have been buried of a downgrade option for iPad baseband.

@@ Line 4: / Line 4: @@
 == WLAN ==
 Signatures (SSIDs) of WLANs in the current location are polled and sent to a database which has also the
-location information of all known WLANs. Such database services are provided by Google and skyhookwireless. Apple claims that they are
+location information of all known WLANs. Such database services are provided by Google and skyhookwireless. Apple claims that they are not using these services since [[iOS]] 3.2 - and provide a similar service themselves. An active Internet connection
 is required to send signatures to the database and get location coordinates in return.
 This is the only method used for iPod touch devices.
 == A-GPS (Assisted GPS) ==
 This method uses GSM/UTMS protocols to quickly identify the approximate current location. The GSM/UMTS network is organized in cells and from currently subscribed cell ID it is possible to get a first guestimate on the current location.
 If neighbourhood cells can be taken into account as well a more precise location estimation might be possible. In addition
@@ Line 23: / Line 20: @@
 == GPS (satellite) ==
 is installed or can be restored (if SHSH blobs are available) and then using [[sn0wbreeze]] for iOS upgrade without
 baseband upgrade. Only if this is no option consider installing iPad baseband.

@@ Line 15: / Line 15: @@
 This method uses GSM/UTMS protocols to quickly identify the approximate current location. The GSM/UMTS network is organized in cells and from currently subscribed cell ID it is possible to get a first guestimate on the current location.
 If neighbourhood cells can be taken into account as well a more precise location estimation might be possible. In addition
-these direct location information network operators may also provide so-called almanach data for faster satellite GPS synchronisation. Read more details here: [http://en.wikipedia.org/wiki/Assisted_GPS|Assisted_GPS].
+these direct location information network operators may also provide so-called almanach data for faster satellite GPS synchronisation. Read more details here: [http://en.wikipedia.org/wiki/Assisted_GPS Assisted GPS].
 However, none of these services are mandatory standards. If provided, network operators usually charge
@@ Line 24: / Line 24: @@
 == GPS (satellite) ==
-Satellite [http://en.wikipedia.org/wiki/Global_positioning_system|GPS] GPS is the most accurate method and hence suitable for even navigation purposes. On the other hand it may take up to 10minutes to &quot;fix&quot; and will most likely work only outdoors. In idevices various (different) chipsets are used for GPS but they have all in common that these are controlled by the baseband firmware. So idevices without bandbase don't have GPS, too.
+Satellite [http://en.wikipedia.org/wiki/Global_positioning_system GPS] is the most accurate method and hence suitable for even navigation purposes. On the other hand it may take up to 10minutes to &quot;fix&quot; and will most likely work only outdoors. In idevices various (different) chipsets are used for GPS but they have all in common that these are controlled by the baseband firmware. So idevices without bandbase don't have GPS, too.
 == ipadBB 6.15.00 losing GPS function ==