FREQUENTLY ASKED QUESTIONS

We are here to help you get answers to your questions about OneSimCard phones and services.

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11. Ordering Questions
    • How many times can I install an eSIM, and can it be installed on different devices?

      For DataMax eSIM can be installed once.
      For eSIM World purchased after Jan 1st, 2024, after the initial installation, the eSIM can be reinstalled up to 9 times. This eSIM can NOT be installed in any other device. This eSIM can only be reinstalled in the original device. In no circumstances can the eSIM be installed more than 10 times (the initial installation plus 9 subsequent installations).
      For eSIM Asiania this eSIM can only be installed 1 time. It cannot be reinstalled after the initial installation.
      In no circumstances can the eSIM be installed more than 4 times (the initial installation plus 3 subsequent installations).
12. eSIM
    • Can eSIM be used for Data, Calls and Texts?

      Yes, as of March 3rd, 2020, OneSimCard eSIM can be used for Mobile Data, Voice and Texts. However, you can still use the OneSim VOIP app option with a Personal Extra Number (PEN) for additional savings on calling and texting

       

      For DataMax eSIMs, only Data is available. However, you can use our OneSim VoIP app for cost effective voice and SMS communication.

13. How To Use Questions
    • How to activate and set up the mobile data service on your mobile device or tablet?

      1. Log in to your account at www.onesimcard.com using the email address and password you entered during the activation or registration of the SIM.
      2. To enable data, go to your My SIM Cards menu, select your SIM card, scroll down to Internet Data and click ‘Enable’.
      2a. For DataMax SIM cards, you can disable Pay-As-You-Go (PAYG)/Per MB data on your online account in the "My SIM Cards" menu. You will see " in the "Select SIM Card" section an area labeled "Use w/o Plan:" to disable per MB data use, this should be turned off. It is recommended to use data plans whenever/wherever available.
      3. Turn on Data Roaming on your phone.
      This is all that is needed for mobile data to work.



14. Rates and Cost Questions
    • Are there any discount SMS text message plans available in Europe or other countries?

      Discount SMS from Europe and many other countries are available with OneSimCard Universal, OneSimCard Plus, Expedition (formerly Data & Roam) and Europe & More SIM cards.

      Discount SMS 100 Plan

      When activated, this plan provides 100 free classic SMS messages sent from Europe to any number in any country in the world. Messages should be sent from the normal SMS menu of your phone and NOT from the OneSimCard 'Travel SMS' menu. SMS plan will be effective for 30 calendar days after the activation took place. The plan can be activated from your OneSimCard web account. Activation cost is 10.00 USD.  

      New SMS plans are available in following countries:
      Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Martinique, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Slovakia, Slovenia, Spain, Sweden, United Kingdom and Vatican City.

      To check how many days and SMS messages are left, dial *146*922*1#
      Screen will show the following message: "SMS package active for X day(s) more, You have already used X of XX free SMS"

       

       

15. How To Use Questions
    • Can I disable per MB/Pay-As-You-Go data usage for DataMax SIM cards

      Yes you can. On your online account, in the "My SIM cards" menu, you will see a section labeled "Select SIM Card." In that section there is a line labeled "Use w/o Plan." If you do not want to use data on a per MB/Pay-As-You-Go basis, and only consume data with a data plan, set this to "Off."
16. eSIM
    • Do I need to have Data Roaming turned on for eSIM to work?

      Yes. Data Roaming should be enabled on your phone for eSIM for data to work. Calls and texts on eSIM World should work with or without it.

17. How To Use Questions
    • How do I prevent the service from expiring?

      The OneSimCard phone number has no expiration, provided you made at least 1 call or sent an SMS once every 12 months.

      However, the funds on the SIM expire 10 months after your last recharge. The minimum recharge amount is $25. You can keep the balance from expiring by simply recharging at least once every 10 months. If you let your balance expire, then all you need to do to get the service up and running again is to log in and add funds to your SIM card. Automatic recharge will be canceled if you let your funds expire.

      NOTE: For Physical 3-in-1 DataMax & DataMax eSIM SIM cards, if the SIM card has no balance, the SIM will expire and be removed from the account after 7 days, unless there is a data package currently active on the SIM (not a future activation). If there is no balance on the SIM and the active data package expires, the SIM will expire 7 days following the expiration of the active data package.

       

      An expired SIM can be restored for a $10.00 restoration fee plus a recharge of at least $25.00.

       

18. Rates and Cost Questions
    • What is time validity of OneSimCard SIM?

      All SIM types are valid for 1 year after the last billable use - phone call, sent SMS or data use.

      The SIM balance for all types of OneSimCard SIMs is valid for 10 months after the last recharge. Each recharge extends the balance for the next 10 months period. If you do not recharge within the 10-month period, any remaining balance will be forfeited.

       

      NOTE: For Physical 3-in-1 DataMax & DataMax eSIM SIM cards, if the SIM card has no balance, the SIM will expire and be removed from the account after 7 days, unless there is a data package currently active on the SIM (not a future activation). If there is no balance on the SIM and the active data package expires, the SIM will expire 7 days following the expiration of the active data package.

       

      An expired SIM can be restored for a $10.00 restoration fee plus a recharge of at least $25.00.

       

19. Troubleshooting Questions
    • When I dial following your instructions it does not work. What's wrong?

      This answer applies to SIM cards purchased before January 1, 2017.

      Some phones, such as Samsung, some Motorola, Android and Apple iPhones, require special dialing instructions or simple OneSimCard settings menu changes in order to make calls.

      It is possible to make almost any phone entirely compatible, so you can call directly without using the OneSimCard menu or *146* by following these simple programming instructions below.

      How to activate compatibility mode:

        1. Locate OneSimCard Menu.

       On iPhones it is called SIM Applications menu and is located under Settings- Phone menu

               On Androids it is called SIM Toolkit app or OneSimCard app and it looks like one of the apps.

         

      1. Open "OneSimCard" menu ( SIM Applications, SIM Toolkit, STK)
      2. Select "Settings
        Newer SIM Cards: Select Service Code option and follow instructions below:
        Older SIM Cards: After selecting Settings:
        1. Agree with message by pressing "Yes"
        2. Dial digits "1101" and select "OK" (Screen will show "CC OptionX: ON" message)

          Bear in mind that if you have powered your telephone down, and have removed and reinstalled the battery, you will need to follow the programming steps outlined above, again.

          If for any reason after entering compatibility code, you still do not get a ringback or you get the ringback the first time you make a call, but second time it would not work, please enter code 802 into the Service Code window instead of 1101 as provided above.

           

          iPhone users can download OneSimCard Assist App from iTunes that will takes care of the iphones compatibility issues, except for removing the ringback.


          For example, calling to USA: Dial *146*0016175551212# and press the TALK (or SEND) button

          * is a star character located on the keypad
          • To check your balance dial  *146*099# and press the TALK (or SEND) button
          • To add funds dial *146*098XXXX*ZZ# and press the TALK (or SEND) button,
            where XXXX - 4 last digit of your credit card on file, ZZ - Recharge amount
          • You need to press * on your phone in the above dialing sequences
          • Activation of voice mail *146*091# and press the TALK (or SEND) button
          • Deactivation of voice mail *146*090# and press the TALK (or SEND) button
          • Check number of messages in Voice Mail *146*094# and press the TALK (or SEND) button
          • To listen to voice mail *146*095# and press the TALK (or SEND) button

          The sequence *146* and # at the end can be used from any phone. However, most phones do not require it.

          We strongly recommend you to watch very short video tutorials that will help you to understand how to make calls, SMS and data on your OneSimCard Phone.


          These videos are available in the Help Menu of your OneSimCard Portal. You need to log in to your OneSimCard account first and then proceed to the Help Menu to be able to access these videos.
          Again, this troubleshooting advice might be needed only for older SIM cards.

           

           

      20. Troubleshooting Questions
        • I just activated my SIM card and can't make a successful test call. What's wrong?

          If you just activated your SIM card and can not make a test call by following the instructions in the user manual, you will likely just need to power off the phone and power it back on again. The phone should automatically re-register with one of our partner networks. Remember, if you answer the test call when it rings you will be charged for the call.
          We strongly recommend you to watch very short video tutorials that will help you to understand how to make calls, SMS and data on your OneSimCard Phone.

          These videos are available in the Help Menu of your OneSimCard Portal. You need to log in to your OneSimCard account first and then proceed to the Help Menu to be able to access these videos.

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