physics

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Across
  1. 5. immediate and intimate way to connect and follow friends
  2. 6. used to communicated and stay updated in whats news
  3. 9. space base satellite navigation system that provides location and time
  4. 10. used to still updated even if it's brownout
  5. 12. that permit to or more users to conduct a conversation when they are not in the same vicinity if each other to be heard directly
  6. 14. is a mobile text and voice messaging communication service
  7. 15. is an online friendly photo sharing video sharing and so on
  8. 18. used in texting
  9. 20. is an online communication like texting mobile phones
  10. 21. is a free mobile instant messaging app for smartphones with free text and free call
  11. 24. it has near communication
  12. 25. a wireless telecommunications device also known as beeper
  13. 26. short for electronic mail
  14. 28. lets you send free messages as well make free calls
Down
  1. 1. application software that specialize providing video chat, video call
  2. 2. is an instant messaging app for smartphones that operates under subscription business model
  3. 3. free messenger service that allows to connect with those whom matter most to you send
  4. 4. to imitate other machine to extend, thinking to have fun
  5. 6. is an image hosting and video hosting website
  6. 7. used to record video with messages
  7. 8. it is a social media website and it is one of the most popular sites in the united states
  8. 11. is an internet based instant messaging app that supports free sms or texting messaging
  9. 13. it is an mobile messaging and voice calling app with social networking and game features
  10. 16. follow blogs you been sharing about
  11. 17. used to announced important news
  12. 19. voice communication and multimedia session
  13. 22. is an online social network service that enables user to send short messages called tweets
  14. 23. make a beeping sound especially a simple computer
  15. 25. it is landline telephone
  16. 27. one of the first dating mobile people discovery app