galip Bastırma Ek dosya mobile phone usage yönetim yeraltı otobüs
Mobile phone addiction? It's time to take back control | Smartphones | The Guardian
How To Stop Using Up All of Your Mobile Data Each Month | WIRED
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Close Up Of Hands Using Mobile Smart Phones People Detail Sharing Photos On Social Media Network With Tech Device Technology Concept And Cellphone Usage With Selective Focus On Left Smartphone Stock Photo -
Smartphones in school: Ban, restrict or allow? - BBC News
44 Smart Ways to Use Smartphones in Class (Part 1) - Getting Smart by @JohnHardison1 -