Privacy Policy

Last updated: March 29, 2023

Mizutech SRL Company is committed to protect the privacy of customers and users of our VoIP applications including the MizuDroid SIP VOIP Softphone. This Privacy Policy explains what personal data we collect from you and how we use it.

All the permissions requested by the app is required only for proper functionality and to improve your experience with VoIP. The softphone application can be configured and used with any third-party SIP server.

We (Mizutech SRL, the app developers) do NOT collect, store or process any data collected by the application. This is except the logs what you might submit manually in case if you wish to report any issue (Upload logs from the Help menu). These logs are auto deleted after 7 days.

However, your VoIP service provider (what you configure in the app) might collect any data what it receives (SIP signaling, media and related data).

Mizutech is sensitive to the private nature of information you enter when using our software. We take great care and use the latest technologies to ensure the security and safety of our software solutions. Our privacy practices are designed to maximize your ability to control the use of your personal, private information. We do not sell any information we collect to third parties.

Personal Data Collected

The application collects only data that is required to properly connect to your VoIP server of choice and to operate the software effectively providing you with the best possible VoIP experiences. You provide this most of this data on the "Settings" section of our applications or when you contact us for support. The software is also capable to get some information automatically such as your contact list and country.

Usually the following details are mandatory to be provided by the endusers: the address (IP and/or domain) of your VoIP server and your SIP account credentials (username/password)

Most of the details collected by our software is never sent to us, only to your own VoIP SIP provider as these are required for proper functionality of the service or for enhanced experience.

In case if you are not using your own SIP server (but a third-party service provider) Mizutech is not responsible for the data collected by the company providing the VoIP service. See your provider (if any) Privacy Policy about how these details might be used.

The data we collect can include the followings:

Audio recording. The application must have microphone access to fulfill its basic functionality of making VoIP calls. Data recorded is never sent to Mizutech but streamed to your SIP server or peer when you initiate or receive a VoIP call.

Camera. Camera access is required only for video calls or if you wish to send camera pictures in chat messages. The app will be usable also without camera access for audio-only calls. Recorded data will be sent to your VoIP provider over the SIP protocol during video calls or chat sessions.

Settings. Most of the settings you provide on the "Settings" section of the application will be stored only locally and will never leave your device. However some settings are required to interact with your SIP server / service provider or Mizutech support and these might be sent with the SIP signaling or separate channels (usually via secure HTTP based API). The submitted details are listed in the below points.

Credentials. We collect your username and password for the VoIP service you wish to use to be able to login the SIP stack on this VoIP servers using secure SIP digest authentication conform to SIP RFC 3261 standards. These details are stored only on your device (softphone settings) and not sent to Mizutech.

Name and contact data. We might collect your name, email address and other similar contact data to enhance your VoIP experience. These details are not submitted to us, but might be presented in the SIP signaling so be presented to the other end (Caller/Called party).

Contact list. Your contact list is displayed within our software to make it easy to call people over VoIP. Some contact details might be sent to your SIP server if presence (users online/offline status display) is enabled. This can be turned on/off from settings.

External storage. External storage access might be asked by the app if you use certain features such as file transfer, send picture or media recording.

Voice recording. Our software has the capability to record voice conversations. This is an opt-in feature and only stored on your device for later reuse by you.

Location data. The software might automatically submit your country as part of the SIP signaling which might be processed by your VoIP server or VoIP service provider. Only IP based lookup might be used, no any GPS data. Your VoIP service provider can also locate you by the IP address from where you connect to the SIP server.

Device ID. The software might generate a GUID for your device which might be used for several features such as auto sign-up (to prevent flooding SIP providers with multiple new account requests). This GUID can't be used to track the user or the device, only to temporarily prevent subsequent new user sign-up requests.

Phone status. Our software collects information about your device such as internet connection type or idle status to determine the best suitable connection method, codec, retry interval and other details necessary for proper functionality. These information’s are not submitted anywhere, but might be present in the logs.

Phone number. The application does not automatically read your phone number. However, some VoIP service providers might require your phone number to be used as a SIP username. In this case the phone number what you provide will be collected by your SIP service provider.

Logs. From within the application you can submit logs to our support which might contain sensitive information such as your VoIP server address and username. We are treating all these logs as confidential, used only for debugging and never shared with any third-party.

Content. We collect content of your files and communications when necessary to provide you with the services you use. For example, if you receive a message using a Mizutech hosted messaging service, we need to collect the content of that message in order to deliver it to your softphone client, display it to you, enable you to reply to it, and store it for you until you choose to delete it. Examples of this data include the content of instant messages, or documents, photos, music or videos you file transfer using Mizutech services.

We also collect the content of messages you send to us, such as feedback and product reviews you write, or questions or information you provide for customer support. When you contact us, such as for customer support, chat sessions with our representatives may be monitored and recorded.

How We Use Personal Data

Most of the sensitive data collected is submitted to your own VoIP server or service provider and not to Mizutech. See your provider (if any) Privacy Policy about how these details might be used.

When data is submitted to Mizutech, we are using the collected data to provide you with the services we offer and to improve and personalize your experiences, as well as the products and services Mizutech provides. We also may use the data to communicate with you, including sending you information on security updates or product updates. Further details on how we specifically use your data are outlined below:

Providing and improving our products and services. We use data to provide and improve the services we offer. This includes operating the services, maintaining and improving the performance of the services, including development of new features, research, and providing customer support.

Push notification. To let you know about incoming calls, chats and other messages, our apps might use the notification service on your device. For many devices, these services are provided by another company. To tell you who is calling, for example, or to give you the first few words of the new chat, our service has to tell the company providing the notification service so that they can provide the notification to you. The company providing the notification service on your device will use this information in accordance with their own terms and privacy policy. Mizutech is not responsible for the data collected by the company providing the notification service. If you don’t want to use the notification services with our applications, turn it off in the settings found in the application or your device.

Security of personal information is important to us. We take commercially reasonable measures and follow generally accepted standards to protect the information you provide us, both during transmission and once we receive it.
We do not share or sell your personal information to third parties. We disclose any information only if required by legal processes, enforced by law.


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Sign-in and Authentication. When you sign into a Mizutech site, we store a unique ID number, and the time you signed in, in an encrypted cookie on your device. This cookie allows you to move from page to page within the site without having to sign in again on each page.

Analytics. In order to provide our services, we use cookies and other identifiers to gather usage and performance data. For example, we use cookies to count the number of unique visitors to a web page or service and to develop other statistics about the operations of our services.

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Our website contains links to other web pages and websites. Mizutech is not responsible for the privacy practices or the content of such websites. You are encouraged to review the privacy policies of these other websites before registering for any products or services from that website.


If, after reading our Privacy Policy, you have questions or concerns about any of the statements herein, we welcome your feedback. You may contact our Customer Service Department at

Mizutech shall honor email requests sent to from customers to change their account information (i.e., name, address or billing information) or otherwise correct inaccurate information. Mizutech will gladly correct such information and customers are welcome to verify that the appropriate corrections have been made. In addition, if you believe that your personally identifiable information is being mishandled in light of this Privacy Policy, please immediately notify Mizutech by email at so that we can address your concern.