A mobile phone is a wireless handheld device that allows users to make and receive calls and to send text messages, among other features. The earliest generation of mobile phones could only make and receive calls. … A mobile phone may also be known as a cellular phone or simply a cell phone

Therefore, now Line app is planning to implement an end-to-end encryption in it’s messaging app. This encryption is called ‘Letter sealing’. Don’t worry, this encryption type is same as that in WhatsApp. So now Line app is enjoying a customer base of 211 million ( which is far more behind than WhatsApp).

GMail via IMAP on the Apple iPhone: Text Instructions
Enable IMAP in your Gmail account settings.
Tap Settings.
Tap Mail.
Tap Add Account.
Tap Other. (Note: don’t tap Gmail; if you do, you’ll set up POP rather than IMAP. …
Make sure that: The IMAP tab is highlighted. …
Tap Save.

Modem. Modem is short for “Modulator-Demodulator.” It is a hardware component that allows a computer or another device, such as a router or switch, to connect to the Internet. It converts or “modulates” an analog signal from a telephone or cable wire to digital data (1s and 0s) that a computer can recognize
Which brands internet modem is better?- It’s depending on your locality.

Open Safari app or other browsers, find the PDF you want to download. Step 2. Tap the PDF and you will find the link named “Open in iBooks”, click it then the PDF would be downloaded to iBooks on your iPhone