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21. Troubleshooting Questions
    • I have an Verizon or Sprint Smart Phone ( iPhone, Samsung Galaxy, HTC, etc). Will OneSimCard work with my phone?

      Verizon and Sprint now offer dual mode - CDMA and GSM phones, which are capable of working on GSM networks. You can request Verizon and Sprint to unlock the GSM portion of the phone for international travel and they will most likely do this for you. However, Verizon and Sprint usually does not unlock phones 100% - they do this partially, so you are not able to use the phone while in USA.

      In such Verizon and Sprint phones you can get invalid message when inserting OneSimCard SIM or your phone does not find US networks. Verizon and Sprint unlock their phones in such a way that you can't use it in USA, but once you are out of the country the SIM will be accepted. Unfortunately, there is no way to tell the difference with this kind of unlocking if the phone is not unlocked or partially unlocked to work only outside of USA. In our experience, once this kind of phone leaves USA, it starts working.

22. Troubleshooting Questions
    • I have a OneSimCard 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.
23. Troubleshooting Questions
    • Does iPhone Hotspot work with OneSimCard?

      Yes. All unlocked iPhones' Hotspot feature works with OneSimCard SIM.

       
      There are a few settings to make sure for this to function properly on your iPhone:
      1. Settings - Cellular - Cellular Data - ON
      2. Settings - Cellular - Data Roaming - ON
      3. Settings - Cellular - Cellular Data Network - Cellular Data - APN = APN will be set automatically
      4. Settings - Wi-Fi - ON
      5. Settings - Personal Hotspot - ON. 
      After turning the Hotspot on, you should stay on the Personal Hotspot screen of your iPhone for SSID of your phone to show up on other Wi-Fi devices, so you can get connected. After you connected to the Hotspot, you can leave the screen. Alternatively, you can always use Bluetooth or USB connection to provide the internet access from your OneSimCard iPhone Hotspot to your other devices.
24. OneSim VoIP
    • Do I need to have a OneSimCard SIM card installed in my phone to use OneSim VoIP?

      No. OneSimCard SIM is not required to be installed in the phone for OneSim VoIP to be used. However, you do need to have OneSimCard account with a VoIP capable PEN.
25. 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.
26. 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.
27. eSIM
    • Can I install my OneSimCard eSIM more than once?

      You can re-install the eSIM on the same phone up to 10 times.  eSIM 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.
28. 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
29. How To Use 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.


30. Rates and Cost Questions
    • Can I use a OneSimCard enabled phone in Japan, South Korea, Myanmar and others?

      All OneSimCard international SIM cards work in Australia, Japan, South Korea, Taiwan, Myanmar, Singapore and other couuntries where 2G networks no longer available. These countries use 3G/WCDMA networks, so only phones with the specific 3G/WCDMA/HSDPA/UMTS 2100 frequency will work in these countries. Most modern smart phones have this option today including all iPhones. You should check your phone specification to make sure your phone has this 3G band,

      OneSimCard offers cell phones with the necessary 3G band for Japan and South Korea that also work in every other country where we provide service:

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