FREQUENTLY ASKED QUESTIONS

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61. 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).
62. How To Use Questions

    • How do I check my OneSimCard balance?

      For Universal, Expedition, & eSIM World ONLY: Just dial 099 "Send" from your OneSimCard phone and in few minutes the balance will be displayed on the screen of your phone. Customers with iPhones can use OneSimCard Assist app to check balances and many other things.

      You can always check your current balance by logging onto your OneSimCard account at www.onesimcard.com.
63. Rates and Cost Questions

    • Are there any monthly fees or connection charges?

      There are no monthly fees or connection charges for using OneSimCard international cell phone service.

      If you order an optional Personal Extra Number (PEN), there is a small periodic fee to keep the PEN active based on how you choose to be billed (from $1.67 per month). There is also an additional charge to receive a call through any Extra Number. View our Rates & Coverage page and click on any country to view our available Extra Numbers and associated costs.
64. How To Use Questions

    • Can I use a OneSimCard phone to send an SMS message?

      Of course you can! Simply send and receive SMS texts according to your phone's user manual or from the OneSimCard Menu. Receiving SMS is always free. Sending an SMS (text message) is $0.15 - $1.50 depending on the country.

      SMS messages sent to a OneSimCard phone should always be sent to the main OneSimCard mobile number rather than to an optional Extra Number, with the exception of new SMS enabled numbers in USA, Canada and UK Mobile available since Jun 3rd, 2014. When replying from OneSimCard phone to the SMS received on USA or Canada SMS capable PEN using Europe & More sim or the Expedition SIM, the main number of the SIM that starts with 372 will be displayed on the text receiver phone. With the Universal SIM, you can select what caller ID will be shown on the SMS receiving party phone.

      You can also send SMS messages from OneSim VOIP app at much lower rates. Note: for Physical 3-in-1 Datamax and Damax eSIM all SMS messages MUST be sent through the OneSim VoIP App with PEN.


      You can also send a free SMS message to any OneSimCard customer from our web site or by sending email to [email protected], where 372XXXXXXXX is the OneSimCard primary mobile phone number. The maximum number of daily SMS sent to the SIM over email or web is 25.

      Please bear in mind that message should be sent in English characters. In addition, it should not be longer than 160 characters including spaces.


      These 2 options of sending SMS by email provide completely free way of communicating, as it is usually free for you to send the email and costs nothing for the OneSimCard customer to receive a text message.
65. 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.



66. 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.
67. eSIM

    • Can I install my OneSimCard eSIM more than once?

      You can re-install the eSIM World and Asiana on the same phone up to 10 times. These eSIMs can be installed only on one device. Once installed, it's not possible move that eSIM to another device. If you need to install eSIM on another phone, please order a new eSIM. Balance and PEN(s) from the old eSIM can be moved to a new eSIM at your request.
      For DataMax eSIM you can re-install the eSIM 3 more times and this eSIM can be installed in more than one device, but must be deleted off the previous device first. The DataMax can only be installed a TOTAL of 4 times.
68. Rates and Cost Questions

    • Is there a way to send a SMS to a short code number?

      The SIM card does not offer SMS service to short code numbers

      OneSimCard offers special US Phone Numbers working with the SIM or even without SIM which are capable of receiving SMS from Short Codes, like those sent by Banks, Paypal and other institutions as well as replying to short codes SMS using 1SIM VOIP app.
69. eSIM

    • What is an eSIM & how does it work?

      eSIM is not a physical SIM. It is a piece of software downloaded to a compatible phone. So there is no shipping involved with delivering eSIM.


      eSIM makes your iPhone or Android phone to be a dual SIM phone. This means that you can use two sim cards on the phone at the same time. You can select which SIM card is used for calls and texts, and which one is used for data. You can select which sim card is to be the primary and which one not to be used. You can make these changes from the settings of your phone at any time. In short - eSIM offers greater flexibility to your eSIM compatible phone. It allows you to use the service provider of your choice - whether you are traveling or staying home.


      OneSimCard eSIM can be installed only on a single device. It can't be moved to another device, but it can be re-installed on the original device up to 3 times if required.
70. 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.

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