International roaming means whenever you are visiting another country with your mobile phone, you can receive incoming calls and you can dial any desired number just as calling from your home country, if the mobile phone has the roaming facility enabled by your service provider. The allowed roaming facility will allow you to send and receive SMS text messages in your device. The so called roaming facility may bring you unexpected heavy phone bills too as it is an expensive service that you can get from your carrier. Because there is two or three mobile phone carriers involved in providing you this International roaming service.
International Roaming facility is available for Sri Lanka mobile phone account holders, if they are taking their mobile phones with them abroad. First they must enable this facility while there here through their service provider. This facility will allow them to receive calls to their mobile phone numbers and also allow them to make calls to the phones of their relatives, friends and businesses from their own mobile phone very easily. But the charges may be little higher as the service is coming through your service provider's partner. You are paying to your local mobile phone service provider and his foreign partner too.
The international roaming allows you to send and receive SMS text messages and MMS, which are also little higher priced then your local rates.
Airtel, Mobitel, Hutch, Dialog and Etisalat offer this International roaming facility to their customers, who have account with them in Sri Lanka as post paid or Pre-paid.
If you have planned to travel to a foreign country, contact your mobile phone service provider's nearest office and ask them about their roaming tariff the country that you are going to visit (call charges and SMS charges). Roaming from some countries may give you heavy phone bill. Not only for the calls that you had made but you will be charged for the incoming calls too that you had attended.
If you are owner of a Smartphone with 3G or 4G LTE service option and if you are taking it with you to overseas, be careful if you are having roaming facility in it. Your Smartphone used to have setting to check for your emails every 15 minutes connecting through the internet. This action may provide you to run in to heavy mobile phone bill, when you reach home. The bill may be mostly for the internet connectivity charges and for the data plan you had used through the roaming partner.
Public holidays, Sundays and Poya days are the best time to make low priced calls to any part of the world from Sri Lanka through out the day and night.
International country code of Sri Lanka is +94 or 0094.