នេះ Link មិន​មាន​ក្នុង​ភាសា​របស់​អ្នក, មើល​ក្នុង: English (en),
ឬ​ប្រើ​កម្មវិធី​បកប្រែ Google:  

http://www.appropedia.org/Mobile_phones

Mobile phones are a valuable communication tool with many applications in development, with benefits for public health and livelihoods as well as in personal communication.

Especially text message services are an important service used in developing countries