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51. Troubleshooting Questions
    • I have a Plus SIM and my phone will not register on a roaming network, what's wrong?

      Sometimes when moving from the USA, Canada or Mexico to another country, the SIM card will need to be reset to properly register on a new country roaming network.

      • If you have the OneSimCard Menu on your phone (it may be called Sim Application Menu on iPhones or SIM Toolkit on Androids), go to the menu, scroll down to Settings and enter Service Code 2003 and confirm, then Code 000 and confirm. For older SIM cards after this enter Service Code 1101 and confirm. Turn the phone off and then back on. 

      • If you do not have access to the OneSimCard Menu then turn off your phone, remove the battery for 20 seconds, reinstall the battery and then turn back on your phone.
52. Troubleshooting Questions
    • I just activated my SIM card and can't make a successful test call. What's wrong?

      If you just activated your SIM card and can not make a test call by following the instructions in the user manual, you will likely just need to power off the phone and power it back on again. The phone should automatically re-register with one of our partner networks or you can manually select and register with a network. Remember, if you answer the test call when it rings you will be charged for the call.
      We strongly recommend you to watch very short video tutorials that will help you to understand how to make calls, SMS and data on your OneSimCard Phone.

      These videos are available in the Help Menu of your OneSimCard Portal. You need to log in to your OneSimCard account first and then proceed to the Help Menu to be able to access these videos.

53. Rates and Cost Questions
    • How does OneSimCard compare to the international roaming from the largest US carriers?

      OneSimCard can help you save a lot of money on international roaming abroad over large domestic carriers. Check out these rate tables to compare international roaming offerings from AT&T, Verizon, Sprint and T-Mobile.

54. OneSimCard General Service Questions
    • Can I check my Voice Mail from a phone other than my OneSimCard phone?

      Yes. You can access the Voice Mail from other phones.

      First you need to set up a voicemail password by either calling from your OneSimCard phone or logging in to your account and clicking on the Voicemail link.

      Once the password is set up, you can dial voice mail access number:

      Toll Free access number for customers in the U.S. or Canada to retrieve voicemail for free: 1-866-703-4770

      Local U.S. number for worldwide customers to retrieve voicemail: 1-213-805-2905

      New Online Voicemail Feature: You can now listen to voicemail for free by logging in to your account and clicking on the Voicemail link. There, you can also set voicemail to be emailed to you as an audio file and change passwords and other settings.

      IMPORTANT NOTE: Voicemail messages will be automatically purged from your inbox after one month, so please be sure to save the content of any important messages before they are deleted.
55. OneSimCard General Service Questions
    • Do I need to activate the SIM card when my order is received or purchased from a retail store?

      Yes, you will need to activate the SIM card once the order is received.

      All OneSimCard international SIM cards and international cell phones with SIM cards are shipped inactive to prevent theft and improve security. Only the person who placed the order for OneSimCard service can activate it.

      Activation is very simple: When you receive the SIM, just log in to your account at www.OneSimCard.com and click the large Activate button you will see in the middle of the screen.

      Retail Customers: If you purchased your SIM card through an online or brick-and-mortar retail store, you should have received activation instructions inside the product packaging. To activate retail SIM cards, go to www.OneSimCard.com/Retail enter your new OneSimCard international mobile number and fill out the form to register and activate the SIM card.
56. OneSimCard General Service Questions
    • Does OneSimCard offer maritime service on cruise ships or ferries?

      OneSimCard Plus SIM offers services on the following MCP cruise lines:

      Celebration Cruise Lines, Viking Oceans, Princess Cruises, Phoenix Reisen, Paul Gouguin, P&O Cruises, P&O Cruises Australia, Norwegian Cruise Line, Mano Maritime, Ibero Cruceros, Hurtigruten Group, Fred.Olsen Cruise Line, Cunard Line, Cost Cruises, Aida.

      The rates are available here: 


      We also offer services on these cruise lines:


      Azamara Club Cruises , Carnival, Celebrity Cruises, Crystal Cruises, Disney Cruise Line, Hapaq Lloyd Kreuzfahrten, Holland America Line, Kreuzfarten.de, Louis Cruises, Peace Boat, Princess Cruises, P & O Ferries, Pullmantur Cruises, Regent Seven Seas Cruises, Royal Carribean International, Semester at Sea, Seabourn, Silversea, Star Cruises, Global Berederung, Thomson, TUI Cruises, Voyages of Discovery.


      The rates are available here: 

      Besides this, generally, OneSimCard can be used on any cruise ship when the ship is close enough to shore so the cell tower signal can be picked up by the phone. The ship should be within at least 1 mile from the coast for your cell phone to pick up a signal. Service will work only when the phone is close to a country where OneSimCard provides international roaming service. Rates are the same as if a call was made from the shore of the country you are near.

57. OneSimCard General Service Questions
    • Is there a 911 emergency number in Europe that can be used with OneSimCard service?

      Yes, in Europe the emergency number is 112. You can use 112 in Europe to report real emergencies to local authorities in the country of stay. The 3 digit number should be dialed directly without any additional digits in front of the number.
58. OneSimCard General Service Questions
    • Can I use OneSimCard data (GPRS) service on my BlackBerry?

      Yes! We do offer data (GPRS) service on BlackBerry devices from models 8000 and up. This is separate from BlackBerry Internet Service (BIS) & Blackberry Enterprise Server (BES). Emails can not be pushed to the phone and BlackBerry Web Applications and Messenger will not work. However, access to web-based emails like Gmail and Yahoo as well as Internet browsing will work.


59. OneSimCard General Service Questions
    • Does OneSimCard offer any Hearing Aid Compatible (HAC) phones?

      Yes. You can find a list of available HAC phones here.
60. OneSimCard General Service Questions
    • How is the OneSimCard Plus SIM card version different from the Standard version?

      The Plus version is for travelers who also wish to use OneSimCard service while in the USA, Canada, Mexico, Puerto Rico or US Virgin Islands at much lower rates than our Standard SIM. Rates in all other countries are the same with either version.

      Plus SIM card lower voice, SMS and data rates in the USA, Canada, Mexico, Puerto Rico and US Virgin Islands can be viewed online by choosing the country from the list.

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