WP7: Subscription Alert Renewal?

Question

When the subscription was created by the client / phone on the MPN server, how long has it been alive? When will it become closed? Can my user applications launch my application and create a new channel each time to open a connection?

Answer 1

No guaranteed service life.
The recommendation is to check the subscription every time the application is launched and, if necessary, update the deleted data.

Update:
Apparently , the channel should be good up to 30 days of inactivity or unacceptable payload.
In practice, always check when your application starts. :)