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111. OneSim VoIP
    • Can I used OneSim VoIP over the Internet Data offered by OneSimCard SIM? Will it save me anything?

      In countries where the cost of using mobile Internet Data is below 20 c/MB, the cost of using SIM VoIP over the data is comparable or smaller than the actual calling rate from the country.
      As a rule ot thumb, the SIM VoIP will use 1MB /Min of talk time. So if the cost of Data in the country is 10 c/MB, then 1 minute SIM VoIP call will cost you 12 cent /minute. You need to have a 3G connection in order for SIM VoIP to work this way.
112. Rates and Cost Questions
    • Does OneSimCard offer a U.S. Military discount?

      Yes! We offer a 15% discount (excluding airtime) for U.S. Military members when ordering with a verified .mil email address and entering promo code MILITARY15. This discount is only applicable for individual users, not for Corporate Accounts.
113. Ordering Questions
    • Can I pay with PayPal?

      Yes, you can pay with a verified PayPal account only. When paying with PayPal you first deposit money into your 1SIM Money Fund. Once the money is there, you can make a purchase or set automatic recharge of you SIM card(s) or Extra Number(s).
114. eSIM
    • How does eSIM works?

      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 Pixel 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 10 times if required.
115. How To Use Questions
    • How can I add airtime to my OneSimCard service?

      In order to add airtime instantly, simply register a credit card with us on our website.

      There are several ways to add airtime to your OneSimCard service.
      Automatic Recharge - recommended:
      1. Just log on to your account at www.onesimcard.com and set auto-recharge in the Recharge Menu. Funds will be added to your account when your balance drops below the threshold you set.
      From the phone using your credit card:
      1. a) From the phone dialpad dial 098YYYY*XX. Talk. YYYY - Last 4 digits of the credit card used last at OneSimCard.com. YY Amount from 25 to 99 USD

      For example, if you need to add $50 and the last 4 digits of the credit card registered with us is 8654:
      You would dial 0988654*50 and press TALK. In few seconds you will get a confirmation message with your new balance.
      * is a star character located on the keypad
      From the phone using 1SIM Fund:
       a) From the phone dialpad dial 098YYYY*XX. Talk. YYYY -  4 digits PIN you created in 1SIM FUND menu. YY Amount from 25 to 99 USD

      For example, if you need to add $50 and the 1SIM FUND PIN is  8654:
      You would dial 0988654*50 and press TALK. In few seconds you will get a confirmation message with  your new balance.
      * is a star character located on the keypad

      From the OneSimCard.com web interface:
      1. You must log in at www.onesimcard.com each time you wish to add funds.
      1. The minimum recharge amount is US $25.00
      1. Using Recharge PIN purchased from a dealer:
      If you purchased a recharge PIN from OneSimCard Authorized dealer, you can recharge your account from OneSimCard handset from OneSimCard - Add Credit menu. When the Add Credit menu is selected, enter the 10-digit PIN and press the Talk (Send) button. 
116. How To Use Questions
    • How do I check my OneSimCard balance?

      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.
117. eSIM
    • How do I install my eSIM?

      Before purchasing, please ensure you have verified that your device is unlocked and one of the supported devices. Installation is completed by using your phone to scan the QR code of the purchased eSIM.  You may scan the QR code by displaying it on the computer screen, another device, or a printed copy.

      If you’ve already purchased OneSimCard eSIM, you can see full installation instructions and access your QR code from the Recharge menu in your online account. Make sure eSIM is selected in the Select SIM Card drop down menu.

      If you have not purchased your eSIM yet, learn more about international eSIM here.

118. OneSim VoIP
    • Can I call using OneSim VoIP from countries where OneSimCard does not offer roaming coverage?

      Yes. You can call from absolutely anywhere as long as you have a good Wi-Fi connection.
119. Rates and Cost Questions
    • Is there a monthly or 30-day credit card spending limit for OneSimCard service?

      To reduce fraud, there is 30-day credit card spending limit set for each individual account. You will only be able to charge up to a certain amount during any 30-day period. You can see your current limit by logging in to your OneSimCard account and going to the Purchase History menu. There, you will find a Credit Card Authorization form available for download. If you would like to increase your monthly credit card spending limit, please download the Authorization form and submit it back to OneSimCard as instructed on the form.

      We strongly suggest that you set your monthly credit card limit before going overseas as dealing with the form on the road can be much more difficult.
120. OneSimCard General Service Questions
    • How can people call and text me for free using the OneSimCard Connect app?

      OneSimCard Connect is a free app for Apple iOS devices that lets people call and text your OneSimCard-enabled phone at ZERO cost to them. Please note that your OneSimCard balance will be charged to receive these calls at the standard incoming call rate for the country you are in, plus an additional 20c/min. Receiving text messages sent from the app is absolutely free.

      Example 1: you are in China where incoming calls are free and someone calls you using OneSimCard Connect. It will be free for the caller and you will be charged 20c/min

      Example 2: you are in Brazil where incoming calls are 35c/min and someone calls you using OneSimCard Connect. It will be free for the caller and you will be charged 55c/min

      PLEASE NOTE: You must enable this feature from your online account's My SIM Cards menu in order for people to be able to use the app to contact you.

      Requires Apple iOS 4.3 or later

      Download for free from the iTunes App Store

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