OneSimCard FAQ

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

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21. Troubleshooting Questions
    • I have a Samsung phone. When I dial following your instructions it does not work. What's wrong?

      Some phones such as Samsung and some other brands require dialing a specific prefix 146 in front of the dialed string when used with a OneSimCard.

      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* can be used from any phone. However, most phones do not require it.

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

      How to activate compatibility mode:

        1. Locate and Open "OneSimCard" Menu. ( It could  be displayed as STK Menu)

              2. Select "Settings"

        Newer SIM Cards: Select "Compatibility" and make sure "On" is selected
        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.
          d when used with a OneSimCard.

      22. OneSim VoIP
        • How do I know if the Personal Extra Number (PEN) I currently have is OneSim VoIP compatible?

          Log in to your OneSimCard account, go to the My Sim Cards menu and scroll down. If your PEN is VoIP compatible you will see an option to create a OneSim VoIP account. At this time all OneSimCard PENs are SIM VOIP capable except for UK Mobile numbers.
      23. Ordering Questions
        • When does a Personal Extra Number (PEN) subscription start?

          New SIM card orders with PENs

          Your monthly, quarterly, bi-annual or annual subscription to a Personal Extra Number starts the moment your order has been shipped. If you do not need your Extra Number to be active right away, you can always wait and order an Extra Number later at any time by logging into your account.

          eSIM orders on do not require shipping.

          PENs added to existing SIM cards

          These PEN subscriptions are activated right after the order has been processed. The activation is virtuallyinstant, unless your PEN order requires additional documents for verification. Please see the local number information page for the list of any additional document requirements by country.

          Free Trial PENs

          Many SIM cards come with Free Trial PENs that are inactive by default. You can activate Free trial PENs at any time from your account.

          BANK SMS Verification PEN

          The SMS Verification PEN is the only PEN that can be used without a SIM card. These PENs are activated instantly if ordered on their own or added to an existing active SIM card.


      24. Rates and Cost Questions
        • What is the cost to make calls from a OneSimCard phone to another OneSimCard phone?

          It depends on the country you're in when making the call. In many countries there is a special low rate of just $0.25/min to call another OneSimCard phone (only when dialing the other OneSimCard user's primary mobile number, not a Personal Extra Number). In other countries your cost will be our standard low outgoing call rate from that country.

          Example: two OneSimCard users are in Italy and one calls the other, the cost will be $0.25/min for the caller and free for the receiver.

          Visit our Rates & Coverage page and choose any country to view its current rates. Use the dropdown menus to see rates for calling to/from other countries.

          PLEASE NOTE: If you activate a discount call plan, the special rate to make OneSimCard-to-OneSimCard calls will not be available. You will be charged for those calls according to the discount call plan rate. 

          Another great benefit of using OneSim VoIP: To call using the 1SIM VoIP App to another user on the 1SIM VoIP App, this call is free, so long as you are calling the PEN associated with their 1SIM VoIP App.


      25. 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"



      26. Rates and Cost Questions
        • Can I send an SMS to or from a Common Access Number or Personal Extra Number?

          You can't send SMS to a Common Access Number (CAN). Common Access Numbers and majority of Personal Extra Numbers are for Voice Calls only.

          We recommend that SMS senders use our free online SMS or email-to-SMS functions as described in the user manual and our FAQs.


          Note: US and Canada PEN can receive only actual mobile SMS from mobile phones. Alert and verification SMS sent from web sites like Google, Yahoo or your bank will not be delivered to US or Canada PENs due to the way these web sites send their messages. 

          If you require some alerts SMS sent from banks and other institutions, we offer special US-SMS Bank Verification PEN that will be able to receive SMS from mobile numbers as well as from institutions used for 2 step verification processes.

      27. eSIM
        • Do you offer an eSIM option for iPhones, Androids or Tablets?

          Yes. The OneSimCard eSIM option is available for use with iOS and Android phones, smart watches and even Windows tablets.

          eSIM is not a physical SIM, but rather a program that can be downloaded to eSIM compatible phones and device.

          The list of supported devices includes:

          • iPhone 15 Pro Max
          • iPhone 15 Pro
          • iPhone 15 Plus
          • iPhone 15
          • iPhone 14 Pro Max
          • iPhone 14 Pro
          • iPhone 14 Plus
          • iPhone 14
          • iPhone 13 Pro Max
          • iPhone 13 Pro
          • iPhone 13 mini
          • iPhone 13
          • iPhone 12 Pro Max
          • iPhone 12 Pro
          • iPhone 12 mini
          • iPhone 12
          • iPhone 11 Pro Max
          • iPhone 11 Pro
          • iPhone 11
          • iPhone XS
          • iPhone XS Max
          • iPhone XR
          • iPhone SE 3¬†(2022)
          • iPhone SE 2¬†(2020)

          Apple iPad models with an eSIM:

          • iPad Pro 11"¬†(1st¬†Gen or later)
          • iPad Pro 12.9"¬†(3rd¬†Gen or later)
          • iPad Air¬†(3rd¬†Gen or later)
          • iPad¬†(7th¬†Gen or later)
          • iPad mini¬†(5th¬†Gen or later)

          • Arrows A101 FC
          • Fairphone 4
          • Google Pixel Fold
          • Google Pixel 8 Pro
          • Google Pixel 8
          • Google Pixel 7a
          • Google Pixel 7 Pro
          • Google Pixel 7
          • Google Pixel 6 Pro
          • Google Pixel 6
          • Google Pixel 6a
          • Google Pixel 5
          • Google Pixel 4
          • Google Pixel 4a
          • Google Pixel 4 XL
          • Honor Magic 4 Pro
          • Honor Magic 5 Pro
          • Huawei P40
          • Huawei P40 Pro
          • Huawei Mate 40 Pro
          • Motorola RAZR 40 Ultra
          • Motorola EDGE 40 Pro
          • Motorola G53 5G
          • Motorola G52J 5G
          • Motorola G53J 5G
          • Nokia XR21
          • Nokia G60
          • Nokia X30
          • Nuu X5
          • Oppo Find X3
          • Oppo Find X3 Pro
          • Oppo Find X5
          • Oppo Find X5 Pro
          • Oppo Find N2 Flip
          • Oppo Reno 5 A
          • Oppo A55s
          • Oppo Reno6 Pro 5G
          • Rakuten Hand 5G
          • Rakuten Mini
          • Rakuten Big‚ÄĎS
          • Rakuten Big
          • Samsung Galaxy A54 5G
          • Samsung Galaxy Fold
          • Samsung Galaxy Note20
          • Samsung Galaxy Note20 Ultra
          • Samsung Galaxy S23
          • Samsung Galaxy S23+
          • Samsung Galaxy S23 Ultra
          • Samsung Galaxy S22
          • Samsung Galaxy S22+
          • Samsung Galaxy S22 Ultra
          • Samsung Galaxy S21 5G
          • Samsung Galaxy S21+ 5G
          • Samsung Galaxy S21 Ultra 5G
          • Samsung Galaxy S20
          • Samsung Galaxy S20+
          • Samsung Galaxy S20 Ultra
          • Samsung Galaxy Z Flip
          • Samsung Galaxy Z Fold 2
          • Samsung Galaxy Z Fold 3 5G
          • Samsung Galaxy Z Fold 4
          • Samsung Galaxy Z Flip 3 5G Fold
          • Samsung Galaxy Z Flip 3 5G
          • Samsung Galaxy Z Flip 4
          • Samsung Galaxy Z Flip 5
          • Samsung Galaxy Z Fold 5
          • Sharp Aquos R8 Pro
          • Sharp Aquos Sense 7
          • Sharp Aquos Sense 4 lite
          • Sony Xperia 10 III Lite
          • Sony Xperia 1 IV
          • Sony Xperia 5 IV
          • Sony Xperia 10 IV
          • Sony Xperia 1 V
          • Sony Xperia 5 V
          • Sony Xperia 10 V
          • Xiaomi 12T Pro
          • Xiaomi 13
          • Xiaomi 13 Pro
          • Xiaomi 13 Lite

          Windows 10:
          Acer Swift 7, ASUS NovaGo, HP Envy x2, Lenovo IdeaPad Miix 630, Lenovo Yoga 630, Microsoft Surface Pro X/Go 2/Pro with LTE Advanced.

          Learn more about eSIM compatibility on the eSIM page.

           Note: iPhonesmanufactured for the Chinese Market have 2 physical SIM card slots and are not eSIM capable. Pixel 3a can't use eSIM if the phone was purchased in Japan, or if bought with Verizon or Charter service.
      28. eSIM
        • Can I use Facetime, WhatsApp, Telegram, Discord, iMessage, and other messaging Apps with eSIM?

          Yes, you can use your messaging apps with eSIM World, which now offers a mobile number ID. 

          For DataMax eSIM, you can use these Apps as you already do. Please ensure your messaging account is already setup with your primary carrier’s phone number because you cannot sign up for these services with the DataMax eSIM number.

          Additionally, the eSIM data service can be used for the actual data part of your communications. So, when you are installing eSIM on phone, you can select the Primary service for Facetime and iMessage and then if your selected eSIM to be your primary data service, the communications will go over eSIM mobile data.

      29. Rates and Cost Questions
        • What is your Return/Refund policy?

          We do not give refunds for airtime.

          You may return an unused phone or OneSimCard SIM card within 30 days after our shipment of the item to you, provided you never placed a call to or from the mobile phone issued, all airtime is intact and the phone or OneSimCard SIM card is in new condition, in the original factory carton, including all packaging materials, inserts and manuals, warranty cards (not filled-out) and all related accessories. A 25% restocking fee will be applied, and shipping charges will not be refunded. Returned merchandise will not be accepted unless a Return Merchandise Authorization (an RMA) has been requested and issued by our Customer Support department. The RMA number must be clearly written on the outside of the box in order to be processed.

          We will not refund airtime used on mis-dialed calls. If you are not sure how to dial a number in a specific country, please request support from customer service.

          There are no refunds for sent SMS messages - either it was delivered to the recipient or not. Not all SMS messages can be or will be delivered.

          We will not refund minutes used for calls to Customer Service. A call made to Customer Service will be billed at the same rate as a regular call made from the country in which you are located.

          There will be no refunds for expired SIM Cards, even if, at the time of expiration, your SIM Card Account had a positive balance.

          There will be no refunds for expired SIM Card Account balances should you fail to recharge your account with at least a $25 payment within ten (10) months of your preceding $25 recharge. 

          There will be no refunds of your account balance if you terminate the Service.

          There will be no charge to your prepaid account if you do not answer the call back. Contact OneSimCard Customer Support for more help.



      30. Rates and Cost Questions
        • Are there any additional roaming charges?

          There are NO additional roaming charges. The rates you see listed on our Rates & Coverage page are the only rates you will be charged when making or receiving calls on your OneSimCard enabled cell phone. This is true for using regular cellular voice or 1SIM VoIP App.

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