In android, you can sync your contacts in google server. Not sure about Windows phone but I guess it syncs with your live account and store the accounts in skydrive.

sajhamitra · Mar 21, 2013 4:18 PM

 i'd say, save the contacts on sim if you will be using the same sim and then copy the contacts in your new phone or you can also access the contacts from sim card if you do not wish to copy to new phone.

biwash prawashi · Mar 21, 2013 4:38 PM

 http://forums.wpcentral.com/no...

prankster · Mar 21, 2013 5:01 PM

 maile ni tei garna khojya ho first ma biwash broda. tara yo jatha jasto phone ma sim ma save garne setting nai bhettaina...

bbmb · Mar 21, 2013 5:04 PM

Saving in SIM is reliable. What if you lost your phone? You will be loosing all the contacts. So always save in cloud

sajhamitra · Mar 21, 2013 6:52 PM

Bbmb on android open contact and press menu , there ia export and import. Press it. It has bunch of options including copy to sim.

facebook · Mar 21, 2013 10:27 PM

In windows phone there is an app from nokia that lets you transfer contacts via bluetooth.

awayfromhome · Mar 22, 2013 12:56 PM