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1. 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 from your standard SIM to the Plus, Europe, Universal or Expedition SIM or otherwise as a one time courtesy.¬†
      • We can move your Personal Extra Number from your Standard SIM to any other SIM card as a one-time courtesy.
      • We can transfer your primary +372 number from your Standard SIM to the Plus SIM if you ordered special replacement SIM here
      • We can transfer your primary +372 number from your Standard SIM, Plus SIM or World eSIM to eSIM if you ordered special replacement SIM here
2. Rates and Cost Questions
    • Can I keep receiving calls made to my regular cell phone or landline numbers while traveling abroad?

      Yes, you can easily forward calls from your regular cell phone number, home phone, office, etc. to your OneSimCard phone while you're abroad!

      Your OneSimCard international SIM card comes with both a European and U.S. number. To forward your regular U.S. numbers to the SIM, just set them to forward to the U.S. number that's included with your SIM card.

      You can also order unlimited Personal Extra Numbers (PEN) - Local or Toll Free - in many different countries, including USA, Canada, UK, France, Italy and Spain. For example, if you work or live in the UK and want to keep receiving calls made to your regular UK numbers, just add a UK PEN to your SIM card and set up call forwarding to that new number.

      Calls received through a PEN will be charged an additional 20c/min to the incoming rate of the country you are in. The exception is calls received through a UK-Mobile PEN which is only charged an additional 25c per call.

      Please Note: Your subscription to a Personal Extra Number starts the moment your order is shipped. If you do not need your PEN to be active right away, you can always wait and order a PEN later at any time by logging in to your account.

      Different carriers use different ways of programming call forwarding. Below are instructions to setup call forwarding with various US wireless carriers. We urge you to test the call forwarding a few days prior to your trip, and to call your US wireless carrier for assistance if needed.

      Alltel, Sprint PCS, Verizon Wireless, Nextel, Cricket Wireless

      To activate Call Forwarding:

      1. Press *72 on your cellular phone.
      2. Enter your ten-digit Second Personal OneSimCard phone number (area code + telephone number).
      3. Press OK/Send (a tone will confirm that Call Forwarding is active).
      * is a star character located on the keypad

      To deactivate Call Forwarding:

      1. Enter *720 on your cellular phone.
      2. Press OK/Send (a tone will confirm the deactivation).

      T-Mobile and AT&T Wireless GSM phones

      To activate Call Forwarding:

      1. Press *21* on your cellular phone.
      2. Enter your ten-digit Second Personal OneSimCard phone number (area code + telephone number) followed by the # key.

      To deactivate Call Forwarding:

      1. Enter #21# on your cellular phone.
      2. Press OK/Send.

      Please note that Sprint and Nextel may charge an extra 20c/min on forwarded calls.

3. Ordering Questions
4. How To Use Questions
    • Can I forward calls from my OneSimCard phone to another number?

      Yes. Your OneSimCard mobile number can currently be forwarded to EU, Canada, USA, Russia, Ukraine and Belarus numbers. It's 100% free to forward your OneSimCard phone number to many countries including to U.S. or Canadian numbers. Forwarding to some countries, as well as to satellite phones, will carry a forwarding charge as listed in the Rates & Coverage page on OneSimCard.com.

      To enable/disable call forwarding from your online account:

      Log in at OneSimCard.com and go to the My SIM Cards menu. Select your SIM card number and enable/disable Call Forwarding on this screen.

      To enable/disable call forwarding from your phone:

      Dial *146*081*XXXXXXXXXXXXX# and press Send/Talk (where XXXXXXXXXXXXX is the forward-to number in international format: 00+countrycode+number)

      Newer SIM cards use *81* instead of *081*

      Example: to forward to U.S. number 1-617-555-1212, dial *146*081*0016175551212# and press Send/Talk.

      If you get an "Unknown Format?" message, dial *146*81*0016175551212#

      To disable call forwarding, dial *146*080# and press Send/Talk. If you get an "Unknown Format?" message dial *146*80# and press Send/Talk.

5. OneSim VoIP
    • Which phone number will be shown on the caller ID when I make a call using OneSim VoIP?

      Your active OneSim VoIP Personal Extra Number (PEN) will be shown on the caller ID.
6. Troubleshooting Questions
    • I have an iPhone and am receiving charges for SMS sent to a UK mobile number 447786205094. Why?

      This is a known issue with Apple's Facetime and iMessage applications on Apple iPhone  devices. We recommend disabling Facetime and iMessage so it will not be able to automatically send SMS to this 447786205094 number. Any SMS sent to this number automatically by your phone can not be refunded by OneSimCard. Additional questions regarding iPhone applications and how they communicate should be directed to Apple Support.
      You can learn more on the Apple Support web site:
      https://discussions.apple.com/thread/5968824
7. 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 onesimcard.com do not require shipping.

      PENs added to existing SIM cards

      These PENs subscriptions are activated right after the order has been processed. The activation is pretty much instant, 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.

8. Ordering Questions
    • Do international cell phones purchased from OneSimCard come with a warranty?

      Unless otherwise noted, all phones sold on OneSimCard.com come with our standard 90-day replacement warranty. This warranty covers any mechanical defects, but does not include damage due to acts of god, neglect, water damage, or other intentional or unintentional abuses of the phone. OneSimCard does offer currently extended warranties available for purchase.
9. Ordering Questions
    • Does OneSimCard offer any Hearing Aid Compatible (HAC) phones?

      Yes. You can find a list of available HAC phones here.
10. 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.


      You can also send a free SMS message to any OneSimCard customer from our web site or by sending email to 372XXXXXXXX@sms.onesimcard.com, 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.

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