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.

 

SMS messaging usually works without any additional setup of the phone.
In rare cases when there are issues sending or receiving text messages, please look at the following:

Problem with Sending SMS:

• Incorrect SMSC number (SMS Service Center Address) in handset settings.

SMSC number should be set as follows:

 

1. For Standard  and Plus OneSimCard SIM: +3725099000 for all countries except:

a. China:  +85290296747

 

2. For the Expedition (former Data & Roam) SIM as well as for Europe & More SIM: +37256100041

 

Special instructions for Apple Phones:

With Apple iPhones to check SMSC:

From the phone dialer Dial *#5005*7672# 

You will see the SMSC set currently on the phone. 

To change the SMSC on Iphone dial: 

Plus and Standard SIMs: **5005*7672*+3725099000# for all countries except China and **5005*7672*+85290296747# if in China.

Expedition (formerly Data & Roam) and Europe & More SIMs in any country: **5005*7672*+37256100041#

 

• NOTE: It is important to have the "+" symbol entered in front of the SMSC number.
• You can find locations of the Message Settings menus for different phone models here.

If your phone requires the name of Message Center Name enter: SMSC
SMS lifetime is short - must be at least 2 hours or set to Maximum settings.
Try sending SMS from OneSimCard menu

 

 Problem with Receiving SMS:

• Receiving Handset does not have enough free memory for incoming SMS.
• Receiving Handset was turned off or out of the coverage area during SMS lifetime set on the sending phone - usually 2 hours.
• Sender's SMS provider does not have an agreement with the receiving network.

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.

Yes, discount calling plans are available on select sim cards.

"Discount A" Voice Calls Plan

You can subscribe to the Discount Call Plan A for Europe (see country list below) and Turkey for just $3.99! Subscription is good for 30 days and will not automatically renew. This plan is available on the Plus and Universal SIM cards.

Once the discount plan is activated, you will be able to make calls from the countries below for only $0.15/min starting with the second minute! The first minute will be charged at the regular outgoing call rate:

Aland Islands, Austria, Azores, Belgium, Bulgaria, Canary Islands, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Lithuania, Madeira, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Svalbard, Sweden, Turkey and United Kingdom.

For example, in Spain where our regular outgoing call rate is $0.49/min, a 15 minute call to the U.S. will now cost $2.74 instead of $7.35!

PLEASE NOTE: If you activate the discount A call plan, the special rate to make OneSimCard-to-OneSimCard calls and to call the voicemail system will not be available. Activation of this discount plan will also cancel the Discount B - Bucket of Minutes to USA, Canada, Australia and New Zealand. You will be charged for those calls according to the discount call plan rate. Discount rate not applicable for calls to Customer Support. Calling to some countries costs extra. Please consult our rates page for more details.

The discount voice subscription can be activated online by logging in to your account or by sending a command from your phone.

• From your online account: Log in, go to the 'My Sim Cards' menu and scroll down to the Discount Plans section to activate the subscription. Once activated, your account will display when the discount rate is set to expire.
  
  
• From your handset: To activate, simply dial *146*931# and press Send. If successful, you will see the following message on your screen: Discount Voice price activated. To check how many days remain on your subscription, dial *146*932# and press Send. The expiration date will also be displayed online in your 'My SIM Cards' menu. To deactivate discount call feature dial *146*930*1#. Deactivation of the feature will not cause the cost of the discount package to be refunded. This feature is needed when you make more calls between two OneSimCard phones than calling to any other places.

"Discount B" Voice Calls Plan

The Minute Buckets offer calling from 130 countries to United States, Canada, Australia and New Zealand at deeply discounted rates. These plans are available on the Standard, Plus and Universal SIM cards.

Available Discount B plans:

The Minute Bucket minutes will be usable in all countries where the package is available.

The following additional rules govern Minute Bucket purchases:

• Only one package can be activated at a time.
• Additional buckets could be ordered consecutively.
• If one of the Minute Buckets is purchased, any other activated voice packages or discounts will be deactivated.
• Calls to Customer Support will be deducted from the Minute Bucket package minutes.
• Calls between OneSimCard phones and calls to the user’s Voicemail are not included in the Minute Bucket packages.
• After the time period of the Minute Bucket package has expired, any remaining minutes will be lost.
• Once the bucket is used up, the billing will revert to standard calling rates.
• Bucket Minutes are used for outgoing calls only. Incoming calls on the main 372 number of the SIM are free and unlimited.

To see countries where the Minute Buckets apply, go to the Rates and Coverage page and select From and To Country and the Plus SIM type in the pull-down menu. Visit the Rates and Coverage page.

 

Please note:

• It's not possible to purchase more than one voice plan at once
• If one of the voice plans is purchased, all other discount plans are automatically deactivated
• Calls from SIM to SIM and Voicemail are not included in this plan

Activation of the plan:

To order a voice plan, login to your OneSimCard web account, click on the My SIM Cards menu and navigate to the Discount Voice Plans section. Select the desired plan and click one of the Activate buttons. Follow the system prompts to finish the activation. 

NOTE: There are no discount plans available on OneSIM VoIP. Because the cost of OneSIM VoIP is so deeply discounted, there are no packages available for voice on OneSIM VoIP.

Yes! Our myOneSim app for the iPhone devices will let you easily access many account services, such as recharging your account, checking voicemail, ordering discount voice and text plans, and much more. MyOneSim is available for download from the App store. Find more information in the Help section of your online account.

 

DataMax SIM cards can't be managed by myOneSim app at this time

Direct Dial calling allows the caller to enter the international  call prefix, country calling code and telephone number and then be directly connected to the person they are calling. This is how you dial when using your regular mobile service. Direct Dial Calling is standard on the OneSimCard Europe & More, OneSimCard Universal and eSIM.

Callback calling also allows the caller to enter the international  call prefix, country calling code and telephone number. After the called number is entered, the user immediately receives an incoming call connecting the user to person called. Callback is very simple to use and allows for low cost calling on the OneSimCard Plus and OneSimCard Expedition (formerly Data & Roam). Callback does not increase the connection time. It is the same as with Direct Dial.

There can be a number of reasons why a battery does not hold a charge. Excluding the possibility of it being a faulty battery, there is another important factor to consider. If your phone is not registered on a roaming network, the battery will drain very quickly as the phone is constantly searching for a network to register on. So, if you get on a 6 hour flight and do not turn the phone off, or put it into airplane mode, by the time you land at the airport your battery will be drained and you will not be able to call back home.

The same thing will happen in those areas with spotty or weak signal network coverage - the battery will drain very fast. It is always a good idea to have an extra battery with you when you travel abroad.

 

For Universal, Expedition, and eSIM World SIM cards, many U.S. and Canadian carriers can charge more than $3/minute to connect to an Estonian mobile number, the primary mobile number for a OneSimCard global SIM card. Your SIM card includes a U.S. number which will be much less expensive for people to call.

Callers can also use one of the Common Access Numbers (CAN) that we provide to you free of charge in more than 10 countries. Your OneSimCard account will simply be charged an additional 20c/min to the incoming rate in the country you are in to receive those calls. There is also the option of ordering a dedicated Personal Extra Number (PEN) in Canada and many other countries that will forward all calls directly to your OneSimCard cell phone. You can see the list of countries where PENs are available here:

You can order a Personal Extra Number when placing your order or later at any time by logging in to your account. Visit our Rates & Coverage page and choose any country to view all rates.

If you would prefer for the caller to pay for calls made, we recommend they buy Peanuts Prepaid. Using this service would guarantee a connection to your OneSimCard mobile phone from the U.S and Canada for 20c/min and it is very easy to use without switching your LD carrier.

For Physical 3-in-1 DataMax and DataMax eSIM, if you chose to use SIM VOIP app, your friends and family will call the PEN number you are assigned, so in most cases, there will be no tariff for them to call you, and the cost to receive the call is only $0.01/Minute.