OneSimCard FAQ

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

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71. 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).
72. 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.

       

73. Ordering Questions
    • Can I upgrade my Standard SIM to a Universal, DataMax or DataMax eSIM SIM or my regular size SIM to a micro or nano SIM?

      Yes. If you would like to upgrade your Standard, Plus, Europe & More, Expedition version SIM card to a Universal, DataMax, or DataMax eSIM SIM card, or upgrade a regular size SIM card to a micro-SIM card (for example, to use in an iPhones) then place your order online by selecting the product option on our Mobile Accessories page here. In the shopping cart you will be able to select your upgrade.

       

74. Ordering Questions
    • How do I order Discount Call, Text and Data plans?

      You can order discount Call, Text and Data packages from your OneSimCard web account after you have received and activated your OneSimCard. 

      NOTE: for DataMax and DataMax eSIM, there are no call or text messaging discount package, since these are already deeply discounted through the 1SIM VoIP App.

      To order a discount package for your SIM card, follow these steps:

      1. Log into your account at OneSimCard.com
      2. Click on the My SIM Cards menu links
      3. If you have more than one SIM card, make sure the SIM Card you’d like to activate a discount package for is selected
      4. Navigate to the Discount Service Plans section and select a discount package you would like to activate
      5. Click Activate Now to activate the selected package immediately or Activate Later to schedule the activation on a particular date.

       

      Future data plan activation:

      a. You can set up the maximum number of times data packages to be activated automatically when the package is used up or expired.

      b. You can set the date after which no packages will be activated, so when your travel is over no data packages will be activated and no charges will follow.

      Note: eSIM World data plan activation may vary from regular Universal or Expedition SIM cards. Please follow directions on the account page.

      To learn more about the availability of discount packages for different SIM cards and countries, please visit the Rates & Coverage page.

       

75. Ordering Questions
    • Is a micro-SIM or Nano-SIM version of OneSimCard available for the Apple iPhone 4/4S, 5/5C,5S, 6, 6S, 7, 8, X, iPads and other devices?

      We now offer SIM cards in universal sizes, where the SIM card contains all 3 sizes - Mini, Micro and Nano. Simply select the needed SIM version in the shopping cart.

       

76. Ordering Questions
    • Is there a nano-SIM version available for my iPhones or other phones?

      Yes! Just select "nano size" or buy a 3-in-1 SIM that contains all 3 sim sizes during checkout.

77. Ordering Questions
    • Does OneSimCard offer any Hearing Aid Compatible (HAC) phones?

      Yes. You can find a list of available HAC phones here.
78. Ordering Questions
    • Can I transfer my phone numbers and balance from my standard OneSimCard SIM when I upgrade to a OneSimCard Plus SIM or other SIM card?

      • We can move your airtime balance and PEN if any from your standard SIM to the Universal, Expedition, eSIM World, DataMax, or DataMax eSIM SIM if you upgrade the SIM or your sim is lost or damaged and you are buying a replacement SIM. The replaced SIM will be permanently deleted from your account.. 
      • We can move your Personal Extra Number from your sim to any other SIM. There is $5 charge for this.
      • We cannot transfer your primary +372 number from your Standard SIM to any other SIM, you will get a new number when you upgrade. 
      • NOTE: DataMax and DataMax eSIMs do not come with any primary phone number. You can purchase a PEN to use voice and SMS with our OneSIM VoIP App
79. OneSim VoIP
    • What is required to use the OneSim VoIP mobile application?

      OneSimCard VoIP requires you to order a compatible Personal Extra Number (PEN). Most of the PENs we offer are OneSim VoIP enabled. You also need to have an Android phone with software version 8 or higher, or Apple device (iPhone, iPad, iPod Touch) with iOS 6.1 or higher.

      Once you have an active OneSim VoIP enabled PEN, you will be able to see the option to create a OneSim VoIP account in the My SIM Cards menu of your online account.

80. Rates and Cost Questions
    • Does calling a mobile phone cost more than calling a landline?

      It does not cost more to dial an international mobile number using OneSimCard service on traditional cellular connections. You will receive the same very low per minute rate whether calling to a mobile phone or to a land line. 

       

      For OneSim VoIP, the cost of calling Mobile numbers is typically higher than calling landlines, but this method is still less than traditional voice calls in most countries..


      You can find all rates listed on our Rates & Coverage page.

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