Interesting observation...never had such experiences. All my contacts would upgrade and not give up their BBs. Afterall, this is BlackBerry Country...Lol..
Their new devices would automatically register in our BBM list.
Thailand is a sheepish country, they just go with the flow, now iPhone is the trend so they all switch to it and iPad..... but a die hard BB fans like myself would never switch , one of the few endanger species left hahaha