How to test viber

17 Common Viber Issues – Here's How to Fix Them!

“I have a problem with the Viber app. Viber keeps crashing all the time. I have uninstalled it and reinstalled it, but nothing. Still crushing. What should I do? ” - From Anonymous

Viber is one of the most widely used cross-platform messaging apps to send messages and make a video or phone calls. You can chat individually or in a group which makes chatting more interesting. In addition, it supports end-end encryption to protect your conversations with third parties.

Although it's one of the most popular messaging apps, Viber, like many smartphone apps, can begin to act strangely. Users have reported crashing and freezing, yet these are only some issues you may encounter. A feature-rich app such as comes with its array of problems.

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Luckily, all of these problems can be fixed. In this article, we will look at ways to fix some common Viber issues. We’ve counted seventeen common problems that can easily be fixed in a few minutes. So, if you're ready to start enjoying your Viber conversations again, let's see how to fix the common issues.

Before you get started

Before you're trying to fix your Viber issues, back up your Viber chat history will be a wise choice if you lose all your essential data in your app. MobileTrans - Backup & Restore can also backup Viber chat history to the computer and restore the chats to another device when you need it.

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• • Transfer Viber chats from one device to another for iOS devices, making it the ideal solution when switching devices.
• • Backup and restore Viber messages to your computer. The backup and restoration process is easy, as we shall see shortly.
• • Support all iOS devices and Android devices.
• • Transfer and backup other social apps, including WhatsApp, LINE, Kik, and WeChat.

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You can learn how to backup Viber chats with step by step tutorial below:

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1. Viber keeps crashing

Initial steps

First, you need to restart your phone and check if you are running the latest version of Viber. Then check if your phone has a good internet connection. 

Now follow the below steps:

Clear cache

• Tap on the Settings icon.
• Click on the apps & notifications icon.
• Find the Viber app.
• Hit on storage & cache.
• Now, clear cache and storage to free up some space.

Hopefully, the issue will be resolved.

Tip: before fixing Viber crashing issue, please backup your Viber data using mobitrans. You can also find more information on securely backing up your Viber data on a computer.

2. Viber not updating

Updating Viber shouldn't be a problem if you have enough memory or are connected to the internet. However, many users experience this issue even if the conditions mentioned above are fulfilled.

The easiest way to fix this issue is to clear the cache and data.

• Go to your phone Settings, find App Manager (or however it's called on your phone), and find Viber.
• Now only click on Clear Cache.

If this doesn’t help, repeat the steps but only click on Clear Data instead of Clear Cache, and see if it works.

Tips for mobile users: Learn how to clear the WhatsApp cache from your iPhone, Samsung, or any other Android phone with this easy step-by-step guide.

3. Viber error "registration can't be completed"

• Check the phone number and SIM card - you need to check if the SIM card is valid. You entered the correct country code and phone number.
• Check the internet's connection - Viber says no internet connection if neither mobile data nor Wi-Fi is enabled. It will also stop the registration process. 

• Check activation code - check if you have entered the correct six-digit authentication code received via phone call or SMS.
• Check account blocked - if you accidentally sent an access code request up to 3 times, Viber may deactivate your account and show a registration error message. For this, you need to reinstall the Viber app and create a new account.

4. Viber activation failed

Activating Viber seems like an easy thing to do. However, many users report problems with this first initial step. To activate Viber, you need to enter your phone number, and you should get an SMS with the activation code.

But, many users fail this step, and there are a couple of reasons for that.

• First, you should confirm that your SIM card is valid. For example, if you are abroad, turn on data roaming to receive SMS. If it's not, you won't get the activation code.
• Second, Viber always requires an internet connection – cellular data or Wi-Fi.
• If that doesn't work, try other options to receive an activation code like "activate via call."

If you don’t have access to the internet, you’ll get the message saying that it's required. However, when you have access to the internet and your SIM card is valid, you should be able to receive your six-digit code via SMS. You can even get it via phone call, which is great.

It's an automatic callback feature that will activate Viber when you answer the call. If you’ve requested your code 3+ times, your account will be blocked. You’ll then need to reinstall Viber and make a new account.

Recommended reading: How to Transfer Viber Messages to New Phone?

You will start receiving pop-up notifications on your screen.

5. Viber blocked the number

Viber may block your account if it considers you spam, suspects your behavior, or suspects you violate Viber's t&c ( Viber Terms of Service and the Viber Out Fair Usage Principles). As a result, you may question why it isn't Viber working. To fix it, you need to contact the viber support team, open a "request to unblock" ticket, and submit it for approval. In most cases, the number is unblocked.

Tips: Getting blocked on Viber by someone is annoying, especially when you are unaware of being blocked. These fool-proof step-wise tips will help you find out if you are really blocked on Viber.

6. Unable to backup on Android phone

If you are an Android user and can't back up your important Viber messages and media, follow the below guidelines:

• Launch Viber.
• Click on More.
• Now click Settings and go to Account.
• Click Viber backup.
• Now go to Settings in the not connected to google drive section.
• Select the account to backup your Viber data.

7. Viber can't back up to iCloud

If you are an iPhone user and facing Viber iCloud backup error, here is how you to fix the problem:

• First, open Viber and click the More Option.
• Next, go to Settings and then Account.
• Click Back Up Now.
• Now go to iPhone Settings, Apple ID, and go iCloud.
• Now enable Viber under the iCloud option. 

Tip: If the above method is still invalid or the backup speed is very slow, and you want a quicker and easier method, it is recommended that you use a third-party backup tool - MobileTrans - Backup & Restore.

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You can visit the MobileTrans website to learn how to backup Viber data on your pc.

8. Viber is always online

The Viber app shows you online even if you exit the app because it runs in the background. However, if you want Viber to show you offline for some reason, here is how you can do it.

• Open Viber and tap on Navicon.
• Click on the Settings.
• Click on Privacy.
• Finally, untick Share 'Online' Status.

9. Viber disconnected abruptly

One of the many Viber app problems is that the app may disconnect unexpectedly. It is due to various reasons. So, here's what to do: 

• In case of a low networking signal like 3g, the Viber may disconnect abruptly. Then you need to connect it over Wi-Fi or find a spot with good cellular data networking signals like 4g, lte, or 5g.
• If the airplane mode in your mobile is accidentally switched on, Viber will disconnect. In this case, turn airplane mode off. Restart the mobile if the problem continues. 

10. Viber not working on Wi-Fi

There’s a strange Viber Sleep Policy that the app sets by default. This doesn’t allow the app to connect to Wi-Fi unless you wake up your phone. We mentioned a setting similar to this just a minute ago, but this one applies only to Viber, making these two completely independent.

To fix this issue, open Viber on your phone, tap on three horizontal lines at the bottom right side, and you’ll see the menu. There, tap Settings and then General. Next, you should see the “Wi-Fi Sleep Policy” option.

Choose Always Connected, which is the first one. The second one is the device's Wi-Fi Sleep Policy, which you don't want to use. So now, your app should work correctly.

11. Viber can't find contacts

Viber users often complain that Viber can't save a contact or are unable to find their contacts. Follow the below steps:

• Open the Viber app.
• Tap More on the right bottom of your screen.
• Hit the Settings tab.
• Click the General options.
• Hit "Sync contacts" plus "Show contacts. "
• Now click on the mobile phone's Settings icon and click Application Manager.
• Select the Viber app and go to the Permissions option
• Finally, enable the Contacts option.

12. Viber Won't Send or Receive Messages & Image

Viber takes advantage of your internet when sending or receiving messages. Unfortunately, many users have experienced that they can’t send or receive messages or images because their internet isn’t functioning.

You’re probably using your local Wi-Fi network when you're inside your house. But when you go outside, it's necessary to use your cellular data. If your internet is working flawlessly, you should be able to send messages.

Other issues include your recipient deleting the app, so you can’t contact him through Viber. Also, there’s one more solution to this problem that works mainly for iPhone users. You need to go to Settings and then tap on Privacy. Next, find the Collect Analytics button and click Disable. Now, you should be able to receive and send messages freely.

Recommended reading: How to Sync Viber Messages?

13. Viber Income & Outgoing Calls not Working

Issues with incoming and outgoing Viber calls are not that rare, too. If you can't make or receive calls on your iPhone, this will solve your problem:

• Launch Viber and go to Settings.
• Click on Calls and Messages.
• Tick mark Viber-in-calls.

You can also allow Video Calls by tapping on the homonymous button and choosing On. Now, you should be able to call or receive both video and audio calls. Sometimes, Viber tends to mess up the Settings, so you must take your time to inspect them before using them.

14. Viber video call is not working

While making a video call, the Viber sometime shows an error message that the video call is not working. Here is how to fix the issue:

• First, open Viber and click on the Menu option.
• Click on the Settings.
• Hit the Privacy settings.

• Now uncheck the collect Analytics option.
• Now come back to the Settings and click on the Calls & Message option.

Hopefully, you will start making video calls.

15. The camera won't work only on Viber

Sometimes Viber crashes temporarily, and it does not open the camera. So the first thing you can do is restart the application. In most cases, it will solve the issue. Otherwise, try one of these steps below:

• First, check camera permission for Viber.
• Reboot your device.
• Shut down the mobile for 15 minutes and then turn it on.
• Recharge your phone's low battery.
• Clear the Viber app cache and delete data (follow the steps mentioned in the above topics).
• If the problem does not solve, reinstall the app.

16. Viber Not Ringing

Viber not ringing is perhaps one of the most persistent issues on iOS and Android platforms. This doesn't always have to be about your phone. Sure, you might have your ringtones disabled or use a do-not-disturb profile, but this isn't the case in many cases.

Usually, Viber doesn’t ring when your phone is locked. Instead, your display shows you the notification, but you don’t hear that ‘clicking sound. To solve this, go to your Wi-Fi Settings, choose Advanced, and check Keep Wi-Fi on When Screen Times Out.

When it's locked, your phone may not be using the internet, meaning that you don't receive notifications unless you unlock it. Alternatively, you can choose a notification type in your iPhone Settings app if you use an iPhone.

In this app, click on Notifications, go to Alert Style, and choose either Alerts or Banner. This will allow you to hear your Viber messages.

17. Viber Desktop Not Working

For Viber Desktop to work, you need the following ports for TCP and UDP:

• • 5245
• • 4244
• • 5243
• • 7985
• • 80
• • 443

These ports can be opened if you go to Control Panel and find Windows Firewall. There, click on Advanced Settings, and on the left, there's the Inbound Rules table. Inside, click on New Rule, and the wizard will open.

In the New Inbound Rule Wizard, click Port and Next. Next, select TCP and enter the ports we’ve mentioned above. Click on Next, and then Allow the Connection. Proceed until the end of the New Inbound Rule Wizard and name it Viber. Click "Finish", and your ports will be opened. The same procedure is for UDP, so you’ll only need to choose it in the NIRL (New Inbound Rule Wizard).

Conclusion

Fixing any Viber issues shouldn’t be a problem if you follow our steps. But, of course, if you have any uncommon issues, you can always contact Viber’s customer support and resolve them. So, now that your favorite messaging app is functioning, it's time to enjoy its premium features!

Recommended reading: 12 Amazing Features You Can Use on Viber

Getting Started with Viber Business Messages

Enabling Viber for your configuration involves gaining approval from Viber to use your channel for business messages, and registration in the Infobip back-end to be able to use it in the web interface and over API.

Enablement Flow

Here you can see the registration and enablement procedure when adding Viber as a communication channel:

Enablement Request

To request Viber enablement, in the web interface navigate to Channels and Numbers > Viber > Overview and use the Send Request option. Provide your email address on which Infobip support can contact you to initiate Viber activation.

In the meantime, make sure to download the Warranty letter and Service Qualification Form ready to be completed and submitted. You can then familiarize yourself with business message Guidelines and Compliance.

Viber Approval

Provide the completed warranty letter and service qualification form to Infobip.

Note

You can choose the communication type (one-way, two-way) through the service qualification form.  To modify the communication type later, refer to the Update Communication Type section.  

Viber will review the application and approve it within 2-3 days, and will assign you a unique ServiceID number.

In addition to the forms, the following provisions are also required to gain approval:

• 5 logos in .PNG format with good quality and resolutions:
  • 50 x 50px
  • 65 x 65px
  • 100 x 100px
  • 130 x 130px
  • 360 x 280px
• Service name in the native language and English
• Service website
• Service description
• Service registered country or location
• Service industry type
• Monthly expected message value
• Service integration type (one-way or both one-way and two-way)
• Destinations or countries you will send messages to
• Type of messages are you sending (promotional or transactional)
• Introductory message example*
• Service estimated launch date

*Introductory messages towards customers cannot be promotional. Below you can see examples of what are considered promotional messages and what are not.

	One-way Message	Two-Way Message
Transactional	Dear Miss {name}, your order has now arrived at our shop and is ready for you to collect.	Dear Mr. {name}, your appointment to Dr. Smith has been scheduled for January 10th at 12:00 AM at our clinic on 125th Lincoln Street. Please make sure to bring all relevant documents with you. To change the time of your appointment or cancel, please reply to this message to contact the appointment center.
Promotional	Dear Ms. {name}, thank you for choosing to fly with {company name}. We have a mileage program that you might be interested in. Find out more (link or button).	Last day of our special summer sale! Discounts for all online store purchases! Reply with a #SummerSale to receive a coupon code.

NOTE

If it’s necessary to set DLR-forwarding to your system via HTTP, provide the URL with information for the Service Qualification Form.

Test Sender

While waiting for Viber's approval, you can use the demo sender to test the service in Broadcast. To create the test broadcast, carry out the instructions in one of the following sections:

• Import Data
• Enter Data Manually

Import Data

You can import the data for the test broadcast from either a file or an existing broadcast.

1. On the Infobip web interface, go to Channels and Numbers > Viber.
2. Click Start Test.
3. Click Import Data.

4. Follow one of these options:

• File: Imports data for the To field. Click Upload File. To add data to the other fields, refer to the Enter Data Manually section.
• Broadcast: Imports data for all fields. Choose from the list of broadcasts.

5. If required, modify the data in the fields.
6. Click Continue to Preview.
7. If you want to make changes, click Back and modify the data.
8. If everything looks correct, click Launch. 

Enter Data Manually

1. On the Infobip web interface, go to Channels and Numbers > Viber.
2. Click Start Test.
3. Enter data for the following fields:

• (Optional) Tracking and URL Shortening: 
  • Track URL clicks: Enable this field to identify which campaign links were clicked, how many times, and by whom. If you enable URL tracking, URL shortening is enabled automatically. If you deactivate URL shortening, URL tracking is disabled automatically.
  • Shorten URLs: Enable this field to reduce the length of URLs.  For more information, refer to the URL Shortening and Tracking section.
    

• (Optional) Advanced: Complete one or more of the following fields:
  • Validity period and Validity period unit: Enter the validity period of the broadcast in either hours or minutes.
  • Message sending speed and Message speed unit: Enter the number of messages to send each second, minute, hour, or day.
  • Enable delivery reports over API: Enable this field to forward delivery reports to a defined endpoint.
  • Data Payload: Add additional information such as name and address. Choose from the available data.
    

• (Optional) Scheduling Options: Complete one or more of the following fields:
  • Communication start: Choose the data and time from which the communication process should start.
  • Timezone: Choose the time zone for the communication and message delivery times.
  • Delivery time window: Choose the days on which the message should be sent and the start and end times to send the messages.
    

• (Optional) Enable Failover to SMS: Enable this field to add SMS as the fallback option in case message sending fails over Viber. Any settings and scheduling options from Viber will be applied to the SMS failover. Enter the following information:
  • Select sender: Choose from a list of senders or type the phone number of the sender.
  • SMS message: Type the message to send to the recipients.
  • Special characters: To add special characters from selected languages, choose from the list.
  • Track URL clicks: Enable this field to identify which campaign links were clicked, how many times, and by whom. If you enable URL tracking, URL shortening is enabled automatically. If you deactivate URL shortening, URL tracking is disabled automatically. For more information, refer to the URL Shortening and Tracking section.
  • Shorten URLs: Enable this field to reduce the length of URLs.
    For more information, refer to the URL Shortening and Tracking section.
  • Validity period and Validity period unit: Enter the validity period of the broadcast in either hours or minutes.
    

2. Click Continue to Preview.
3. If you want to make any changes, click Back and modify the data.
4. If everything looks correct, click Launch. 

Registration in Infobip

Once approved by Viber, you'll need to sign our Messaging Services Agreement (MSA), or the MSA Addendum to include Viber if you are already using our other services. Infobip then completes the integration process and enables the service.

You can now use the approved sender.

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