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 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.

• BlackBerry?® 6210: Press Alt (bottom, far left on keyboard) and the letter "I".
• Bosch: Press and hold the star (*) key until the "+" sign appears.
• Motorola: Press and hold the zero key until the "+" sign appears.
• Nokia: Press the star (*) key twice in rapid succession.
• Pocket PC: Pull up the keyboard, hit the <123> button in the top left corner, and select "+" from the resulting screen.
• Samsung: Press and hold the zero key until the "+" sign appears.
• Sony Ericsson: Press and hold the zero key until the "+" sign appears.
• Treo 270: Press the blue button and then the "G" key.

The newly offered OneSimCard Europe & More and the Universal SIM does not use the callback to make an outgoing call in over 70 countries.

With OneSimCard Plus or Expedition (formerly Data & Roam) SIM:

Normally, when you make a call with OneSimCard the phone will ring back within a few seconds after dialing and you will then get connected. You can eliminate this callback if you have a smarphone running Android (OS version 5 or below) by downloading and installing our OneSimCard Direct mobile app. 

For phones using Android (OS version 5 or below):

• Download and install directly from Google Play
• or download OneSimCard Direct App to your computer first and then install it on your Android.
• or download and install OneSimCard Direct App when logged directly from your Android phone.
• Instructions for installing application on Android phone.

OneSimCard Direct app allows you to hide the callback and makes it easier to make a call directly from your phone's address book. Unfortunately it is not available on the newer version of Androids, nor on iPhone.

Each mobile data session is charged for a minimum of 10kB usage. Even if you check just one 3k email you will be charged for 10kB of usage. In some countries this can be over 30c per session, however in Europe and elsewhere it can be as little as 1c. Check all rates.

Please note: Some phones, like iPhones and other smartphones, can access data without you even knowing it if you have data enabled. We strongly recommend checking the settings on your phone or disabling GPRS from your OneSimCard account if you will not be needing data service. By default, all SIM cards are pre-programmed with GPRS data service disabled.

The new OneSimCard Global Concierge Service offers a full suite of services available 24/7/365, including foreign language translation services for over 90 languages. The service is available to you any time you need help of a professional interpreter. Just dial +372991 or 00372991 from your phone and ask for the interpreter service.


Languages available for translation: Afrikaans, Ambonese, Arabic, Armenian, Bahasa Indonesia, Bahasa Melayu, Balinese, Bataknese, Bengali, Betawi, Bulgarian, Burmese, Cantonese, Chinyanja, Creole, Croatian, Czech, Damara, Danish, Dutch, English, Farsi, Finnish, Flemish, French, Gaelic, German, Greek, Gujarati, Hainanese, Hakin, Hebrew, Herero, Hindi, Hokkien, Hungarian, Ilonggo, Italian, Japanese, Javanese, Kalanga, Kazakh, Khmer, Korean, Kurdis, Macedonian, Manadonese, Mandarin Chinese, Manipuri, Marathi, Mongolian, Nama, Ndebele, Nepali, North Sotho, Norwegian, Oriya, Oshiwambo, Padangnese, Palembangnese, Polish, Portuguese, Punjabi, Romanian, Russian, Samoan, Serbian, Serbo-Croatian, Seswati, Setswana, Slovak, Slovenian, Southern Sotho, Spanish, Sudanese, Swedish, Swiss German, Tagalog, Taiwanese, Tamil, Telugu, Teochew, Thai, Torajanese, Tsonga, Tswana, Turkish, Ukrainian, Urdu, Venda, Vietnamese, Xhosa and Zulu.

You can order discount Call, Text and Data packages from your OneSimCard web account after you have received and activated your OneSimCard.

To order a discount package for your SIM card, follow these steps:

1. Log into your account at OneSimCard.com
2. Click on the My SIM Cards menu links
3. If you have more than one SIM card, make sure the SIM Card you’d like to activate a discount package for is selected
4. Navigate to the Discount Service Plans section and select a discount package you would like to activate
5. Click Activate Now to activate the selected package immediately or Activate Later to schedule the activation on a particular date

Note: Please visit the Rates & Coverage page to learn more about the availability of discount packages for different SIM cards and countries.

There are no monthly fees or connection charges for using OneSimCard international cell phone service.

If you order an optional Personal Extra Number (PEN), there is a small periodic fee to keep the PEN active based on how you choose to be billed (from $1.67 per month). There is also an additional charge to receive a call through any Extra Number. View our Rates & Coverage page and click on any country to view our available Extra Numbers and associated costs.