To call someone, you need a service provider or connection to a WIFI source. You need a WIFI or a signal strength symbol in the notification bar. There are a few ways to call someone.
WIFI Signal Strength
Block numbers. If you want to block a specific number, start by opening the phone app and go to that phone number. Then either tap block number or the three dots, then add to call reject list.
Calling 911. You can always call 911 from any phone even if it doesn’t have a service provider.
The same requirements apply to texting as to calling. You need either service or WIFI.
Add Emojis. To add emotions to your texts, consider adding these little stickers. You can find them on your keyboard. After you tap on the smiley face icon, a whole bunch of emojis will pop up, and you can choose from the options.
Read Receipts. You can check if someone has read your message by looking above the time stamp, which is to the left of your message. If it says read, that means that the person has read your message. If it says delivered, it means that their phone has received your text, but they haven't read it yet. However, you only see these receipts if your have the same type of phone (Samsung, Motorola, etc.) as the person that you are texting.
If you want to see the person you are talking to, video calling is a great idea. You can use a wide variety of different apps to video call people such as Skype, Google Hangouts, or Whatsapp. These apps also include a way to text people. It is very similar to the messaging app from above. However, it will have a few differences.
Go to this link to install Skype: https://play.google.com/store/apps/details?id=com.skype.raider&hl=en
Split Screen while calling. You can split your screen by dragging the picture in the upper right hand corner down to the plus sign that appears when you start dragging.
Subtitles while calling. If you tap on the plus sign at the bottom of the screen a menu will pop up. Then tap ‘turn subtitles on.’
Share photos while calling. Tap on the plus sign at the bottom of the screen, then tap on gallery. Tap on add a photo, then choose the photos you want to share. And tap the send arrow at the bottom. It will also send the photos in the chat section.