There are so many plat­forms of phones nowa­days: iPhone, Black­berry, Nokia Sym­bian and Android, etc. Unless you are in the “fam­ily” or “com­pany” plan, your calls/SMS out­side the family/company plan will be charge­able. If both par­ties sub­scribed to cel­lu­lar data plan and want to com­mu­ni­cate via instant messaging/chat BUT with dif­fer­ent phone plat­forms — then how??? […]

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