Giải phóng mạng điện thoại di động
Cập nhật: 06:43 22/05/2013 GMT+7
Điện thoại thông minh hiện là phân khúc lớn nhất của thị trường thiết bị di động, và người dùng ngày càng muốn tải thêm nhiều dữ liệu hơn mỗi năm, từ hoạt động gửi hình ảnh, truyền video...
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