This might mean your phone’s OS version is not included in the list of supported OS versions. Please make sure your device is running the supported OS versions.

If you are already using a supported OS version, you will continue to enjoy OneSuite App. Please visit the OneSuite App download page for your respective smartphone's application store, once in a while, to get updates or upgrades on OneSuite App.

If you are already using supported OS versions and above and decided to downgrade beyond these OS then your OneSuite VoIP may no longer function.

Certain mobile phone models have file size download limitations. In such cases, you may not be able to download more apps until you have cleared some of your mobile phone memory.

There may be a few reasons:
Regarding your phone and service, please make sure:

1. Your mobile phone is NOT in flight mode.
2. Your mobile phone service is enabled and you currently have signal.
3. Your outgoing service is connected and you did not activate call redirect.

Regarding your OneSuite account and installation, please check:

1. If your OneSuite account has enough balance to make a call.
2. If your login credentials are still valid.
3. If your installation is complete. Here's how to check on your respective smartphone:
   1. iPhone - see whether the application is still downloading or installing. A bar usually shows the progress of the installation. You should be able to see a clear image of the OneSuite VoIP icon once the installation process is completed.
   2. Android - different phone models may have different approaches to issues related to unsuccessful installation. Please visit the Google Play Technical Help to find a solution specific to your phone model.
4. Your unsuccessful installation may be related to an SD card issue. As an example, if you encounter the below error:
   "Installation unsuccessful - Unknown error 18"
   If so:
   1. Connect your phone to your laptop/PC with an USB cable.
   2. On you computer, find your phone's folder.
   3. Go to folder ".android_secure" and delete file "smdl2tmp1.asec".
   4. Safely remove your phone. Installation should now be successful

If installation is incomplete, you may restart your device by turning the power off and on, then repeat the steps to download and install.

Yes, OneSuite VoIP will not interfere with any of your mobile phone features and you can continue to receive or send e-mail, SMS, MMS and other features on your mobile phone.

Yes. You can access your Internet Call history by tapping the “History” icon. Your Local Access Call history will be in your phone's "recents" or "log".  The complete call history is available in your web account.

Absolutely. You can call any phone line or phone number using OneSuite VoIP.

No. OneSuite VoIP does not support calls to any emergency number or emergency service, like 911. To dial 911, please make sure to use a regular phone line or wireless-carrier phone line.

You may dial *0 directly from the OneSuite App dial pad to access your voicemail box.

OneSuite VoIP is supported by OneSuite's Customer Service. You may reach us at 1-866-417-8483, or email us at This email address is being protected from spambots. You need JavaScript enabled to view it. . You may also visit our blog, Perk Up! for more information.