When you answer the phone in Japanese you say moshi moshi (もしもし). This is only used to say hello on the phone, not in person.
Where is (my) cell? = keitai wa doko? (携帯はどこ？)
Is this your cell? = anata no keitai desu ka (あなたの携帯ですか)
Do you have an iPhone? = iPhone motteiru no?
When telephone numbers are spoken out loud in Japanese, the numbers 2 & 5's pronunciation becomes longer.
2 becomes nii
5 becomes goo
In Japan telephone numbers are always written in roman numerals. In English we separate area codes from phone numbers with a pause, in Japanese you use the particle no
3582 1624 = san goo hachi nii no ichi roku nii yon
0123 4822 = zero ichi nii san no yon hachi nii nii
When you say the number zero (0) you can use the Japanese word for zero which is zero (ゼロ). You can also use the word maru (丸) which means circle and is equal to when people say oh in English.
What is your phone number = denwa bangou wa nan ban desu ka
Cell phones are very popular in Japan, almost everyone has a cell phone. Cell phones in Japan are also very high tech and useful. For example, each cell phone bought in Japan has the capability to send you a notification when a large earthquake happens so that you have time to prepare.
Another common practice is sending emails from phones. All Japanese cell phones have an email address just for their cell phone. Even though phones can send text messages, most people prefer to use email. In text and email messages you can send icons such as stars, hearts and other animated things. You even have the ability to change the colour of the text.
Cell phones also have ability to read bar codes, and infrared technology that allows users to pay for items such as groceries or train tickets using their phone.
The emergency numbers in Japan are;
110 = Police (hyaku too (ban))
119 = Fire, ambulance (hyaku juu kyuu (ban))