Subscriber's value

Girl with handset

(U)SIM is a very convenient and secure place for subscriber applications which help increasing customer loyalty and operator revenue. Cellnetrix has developed to date a lot of standard and customized applications. Most of them have been already deployed and approved in the field.



The Huge Phonebook Application allows the subscriber to keep and manage an extended phonebook stored on the SIM and secured by a special PIN.



 The phonebook stored on the handset is easily accessible in case the handset is stolen. Enhanced phonebook securely stored on the SIM card can be a good alternative. Phonebook can store names, numbers, email and other contact data and access to it can be hidden for unaware users. The limit of the phonebook is relative to the size of the SIM. 

Main Features

  • Secret hidden access
  • Secured by PIN or Password
  • Synchronization via OTA;
  • 1000 and even more contacts are supported limited only by SIM memory;
  • Store Name, Surname, mobile and fixed number, e-mail, etc;
  • Optional access from the desktop PC to manage contacts;
  • Make call, send SMS directly from phonebook;


Application provides a valuable feature and increase customer loyalty.



SecuPass stores PINs and passwords in a secure environment in the (U)SIM that makes them always available to the subscriber.


(U)SIM is one of the most secure network components therefore it is ideally suitable for storing any confidential information such as passwords, PINs and IDs. In case of handset stealing the data on SIM could not be recovered without very expensive electronic equipment which couldn’t be in possession of criminals. A subscriber can add, edit and access confidential information via SIM toolkit menu.

Main Features

  • Any private information could stored such as Credit Card numbers, PINs, web logins etc
  • Universal PIN support with limited number of wrong verifications
  • Possibility to download data Over-the-Air
  • Very high security level


The application offers to the subscriber a nice value-added service which can drive a revenue and increase customer loyalty. Operator can use such an application to automatically distribute access information to the subscribers such as login/password etc

important call

BusyCall informs the calling party that the subscriber is currently talking on the phone or just not willing to pick-up the phone.


The Busy Call Application informs the caller that the person they are calling is on the phone and can send an SMS to the caller advising the caller to call later or other instructions that the subscriber wishes.Busy Call sends message to the calling number with a predefined text specified by the customer.

Main Features

  • Possibility to specify a text message for an alert
  • Manual change of the status (available/unavailable) from menu
  • Support of conditional statuses (ex. available only for friends in the phonebook)
  • Possibility to specify several messages for different types of alerts (calling, meeting etc).


The application will generate additional SMS traffic and provide an interesting service for the subscribers increasing their loyalty.

Terms of Usage

Privacy Policy

This privacy policy sets out how Cellnetrix uses and protects any information that you give Cellnetrix when you use this website.

Cellnetrix is committed to ensuring that your privacy is protected. Should we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement.

Cellnetrix may change this policy from time to time by updating this page. You should check this page from time to time to ensure that you are happy with any changes. This policy is effective from 01.01.2011.

What we collect

We may collect the following information:

  • name and job title
  • contact information including email address
  • demographic information such as postcode, preferences and interests
  • other information relevant to customer surveys and/or offers

What we do with the information we gather

We require this information to understand your needs and provide you with a better service, and in particular for the following reasons:

  • Internal record keeping.
  • We may use the information to improve our products and services.
  • We may periodically send promotional emails about new products, special offers or other information which we think you may find interesting using the email address which you have provided.
  • From time to time, we may also use your information to contact you for market research purposes. We may contact you by email, phone, fax or mail. We may use the information to customise the website according to your interests.


We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online.

How we use cookies

A cookie is a small file which asks permission to be placed on your computer's hard drive. Once you agree, the file is added and the cookie helps analyse web traffic or lets you know when you visit a particular site. Cookies allow web applications to respond to you as an individual. The web application can tailor its operations to your needs, likes and dislikes by gathering and remembering information about your preferences.

We use traffic log cookies to identify which pages are being used. This helps us analyse data about webpage traffic and improve our website in order to tailor it to customer needs. We only use this information for statistical analysis purposes and then the data is removed from the system.

Overall, cookies help us provide you with a better website by enabling us to monitor which pages you find useful and which you do not. A cookie in no way gives us access to your computer or any information about you, other than the data you choose to share with us.

You can choose to accept or decline cookies. Most web browsers automatically accept cookies, but you can usually modify your browser setting to decline cookies if you prefer. This may prevent you from taking full advantage of the website.

Links to other websites

Our website may contain links to other websites of interest. However, once you have used these links to leave our site, you should note that we do not have any control over that other website. Therefore, we cannot be responsible for the protection and privacy of any information which you provide whilst visiting such sites and such sites are not governed by this privacy statement. You should exercise caution and look at the privacy statement applicable to the website in question.

Controlling your personal information

You may choose to restrict the collection or use of your personal information in the following ways:

  • whenever you are asked to fill in a form on the website, look for the box that you can click to indicate that you do not want the information to be used by anybody for direct marketing purposes
  • if you have previously agreed to us using your personal information for direct marketing purposes, you may change your mind at any time by writing to or emailing us at

We will not sell, distribute or lease your personal information to third parties unless we have your permission or are required by law to do so. We may use your personal information to send you promotional information about third parties which we think you may find interesting if you tell us that you wish this to happen.

You may request details of personal information which we hold about you under the Data Protection Directive (95/46/EC) . 

If you believe that any information we are holding on you is incorrect or incomplete, please write to or email us as soon as possible at the above address. We will promptly correct any information found to be incorrect.


Customer protected area