Viber is one of the popular Internet messaging apps available to users. It has the ability to let you choose a background on your conversation windows to add a more personalized feel to your Viber experience. It’s easy and fun to do

1. Launch Viber on your mobile device. Tap the app on your home screen or app drawer to open it.

2. Open the Menu. To do this, tap the Menu icon located at the bottom-right corner of the screen.

3. Go to the Display settings. Tap on “Settings” on the Menu page then tap “Display.”

4. Tap “Change default background.” This will be the first option you will see on the Display settings menu.

5. Select a background. You can now select a different background from the preset images displayed on your screen. Simply tap the image you like and you’re done.

If you want a custom image to be your background, tap the “Gallery” button at the top-right corner of the screen and select a photo from your phone Gallery.

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1. Open "Viber." Tap the shortcut icon on your phone’s application screen to open the application.

2. Go to the chat list. Do this by tapping the chat button (talk bubble icon) on the upper-left corner of the screen.

3. Tap the "Group Conversation" button. This should be on the chat list section, located on the bottom part of the screen (the second button from the right, beside the "Menu" button).

4. Select the people you want to include in the group chat. Tap the names of the person you want to include on your "Contact List" to select.

5. Tap on “Done.” This should be on the upper-left corner of the screen to proceed. A new chat window will open.

6. Start the chat. Type in your message and tap the paper plane icon on the right side to send it. Wait for the other members of the group chat to respond.

7. Add participants. Tap the "Options" button by tapping on the gear icon on the upper-right corner of the chat window, and the options will slide out from the right.

Next, tap on “Add Contacts.” Just scroll down to the “Participants” section and repeat steps 4 and 5 to add the participant you want.

Link Source : WikiHow

Viber is a phone application that enables you to make phone calls over a Wi-Fi network to other Viber users - domestic and international. The contacts in your Viber are the same contacts in your phone's regular address book. If you would like to stop receiving phone calls and messages from someone, you can choose to block their phone number. However, if that person has access to an application like Viber they may still be able to contact you. Luckily, you can block them on Viber too.

1. Open Viber. Navigate to your phone's home screen and locate the Viber application. The icon shows a white telephone on a purple background. Tap on this icon to launch the app.

2. Open the app’s menu. Do this by tapping on the Menu button located on the lower-right hand corner of the screen.

3. Tap Settings.

4. Open the privacy settings. This is done by tapping “Privacy” on the Settings screen.

5. Tap on “Block List.”

6. Add a number to the Block List. To do this, tap on “Add Number” on the bottom part of the screen and type in the number you want to block. Tap on the “Block” button once you are through. The mobile number will now appear under the Block List.

7. Delete a number from the Block List. Simply locate the number you’re looking for and tap the “Unblock” button alongside the number to remove it from the list.

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1. Go to Contacts. From the bottom menu, tap the “Contacts” menu

2. Select the person to call. From your contact list, scroll up or down to find the person you’d like to call. Tap on the name once you’ve found it.

3. Call with Viber Out. The selected contact will be displayed on your screen, with his name, photo (if available), and phone numbers.

If your contact has a Viber account, you don’t need to pay anything to reach him. Viber to Viber calls are free. Just tap the “Free Call” button to initiate the call.

If your contact doesn’t have a Viber account, you need to use Viber Out to call him. Tap the “Viber Out” call button instead to initiate the call. You need to have enough Viber Out credits to have the call.

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1

Get rates. Still on the Viber Out screen, tap the “Get Rates” item. Viber will connect to the Internet and retrieve the current call rates for the different countries.

It is always good to know how much you will be spending before making the call.

2

Search the country to call. Under the Viber Out Rates screen, there’s a Search field. Type in the country you’re calling. The top destinations are already listed below, in case you’re calling any of them.

3

View the rates. After keying in the country, the results will be immediately displayed under the Search field. The name of the country will be displayed, together with the call rates per minute for mobile and for landline.

Making calls using Viber to another Viber account is free, as long as you have a Wi-Fi connection. If you need to call another person outside Viber, you have to pay the appropriate call charges. Calling someone local, either landline or mobile phone, is pretty straightforward as you don’t need Viber to do that. However, if you need to make an international call, Viber offers you better rates than using your phone using its feature called Viber Out, which you can use to make calls with Viber to any outside number, either landline or mobile phone, in most countries.

Buying Viber Out Credit

1. Launch the Viber app. Look for the Viber app on your smartphone. It’s the one with the app icon with the purple background and with a phone inside a chat box. Tap on it to launch it.

2. Go to More options. From the bottom menu, tap the icon with the three dots to reach Viber’s extended menu.

3. Go to Viber Out. From the More menu, tap the “Viber Out” item.

4. Check your credit balance. The Viber Out screen displays your current Credit Balance. This is the amount of money you have for use with Viber Out.

Calling using Viber Out costs real money, and you need to have some prepaid credits to use it.

5. Buy credit. If you don’t have any credit or will like to load some, tap the “Buy Credit” button beside your Credit Balance. A menu of prepaid credit values will be displayed. Tap the one you’d like to buy.

You have three options to choose from $0.99, $4.99, and $9.99.

6. Pay for the credit. Follow the on-screen steps to complete your purchase. Once the purchase is completed, the credit amount you’ve just bought will be added to your Credit Balance.