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Roaming between mobile network and WiFi network is managed by OS on iPhone and Android, while on Blackberry and Symbian is partially controlled by application.


PrivateGSM behavior depends on many factors, including mobile platform, network type and PrivateGSM state (idle or in-call).

Idle state


Idle State


 mobile reconnects as soon as it detects


the new network. This typically happens within 30 seconds


In-Call state


Network roaming between mobile and WiFi are supported and secure call continues. Users can have a short gap, under 1 seconds.

Network roaming between 2G and 3G network is supported, but depending on mobile operator and device you have a gap, variable between a few seconds up to 20. In the latter case, the secure call is automatically terminated.