Why should client re-register when sim card is changed?

Maybe this is a stupid question. I'm just curious to know who.

I checked the push client sample app to push SDK. It seems that the registry procedure, the cient enough to send the identification number to the server. so has nothing to do with the sim card. My question is why have to re-register when changed the SIM card?

y at - it report any with * beep * between Sim and PIN?

Thank you!!

PIN

Personal identification number

 A PIN code is a unique number that identifies a BlackBerry smart phone for GSM and GPRS networks. It is printed on the label on the back of the device under the battery.

SIM

Subscriber identity module

A SIM card is a smart card that identifies the Subscriber, service provider and mobile phone number. It is inserted in the device.

Not all wireless networks use SIM cards (for example, CDMA does not work).

In general, Désenregistrez is important if the user of this device does not want to receive push messages. For example, if they delete the application without successfully a unregister then push future messages will be sent to the device but just never displayed because there is no application listening for the push - this can incur unintended data charges. So it is always a good practice to ensure a user is unregistered successfully.

Specifically in the context of the swap SIM on a device, let's say you have username = Foo on device PIN = 12345678 registry successfully both Push BlackBerry Service and the content provider. Now the user Foo gives the device a friend with username = Bar. Bar put in SIM card and start the unit. The application should make sure that this username = Foo is first of Nations United-registerd with the content provider. And then username = Bar should register with the content provider. From the point of view Service Push BlackBerry cancel registration is not vital because Service Push BlackBerry knows only that the PIN = 12345678 is subscribed, they do not know Foo or Bar.

Tags: BlackBerry Developers

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