Kamu pakai blackberry? Akhir tahun ini kalian berencana liburan ke luar negeri? Ke Singapore, Malaysia, Hong Kong, Taiwan atau Australia? Today (Dec 15, 2010) Telkomsel offer Free Blackberry Roaming promo for all kartuHALO subscribers (new & existing) valid from Dec 15, 2010 – Jan 16, 2011 with the following roaming partners: SingTel – Singapore Maxis –…