Beware of the monkeys. Monkeys, particularly macaques small, red-faced monkeys can get quite aggressive, and have been known to steal personal belongs, including cameras, if left unattended.
Anuradhapura has more malaria than just about anywhere else in Sri Lanka. Certainly the most in places frequented by tourists. Be sure to talk to your doctor before departure, as there is little prevention available within Sri Lanka, and it must be started in advance. Also, be careful not to become a snakebite victim. Avoid high brush without proper clothing, and don't stick your hand into dark or dim holes including stone and masonry. If bitten, seek prompt medical attention regardless of whether there is pain and swelling.
respect
It is respectful, and indeed necessary, to remove shoes and hats when walking around sites of Buddhist veneration. The ground, especially the sand, can get quite hot, so step lightly and seek shade if you must.
It is also polite to circumambulate to the right; that is, walk to the left around the object so that your right hand, considered to be the clean hand, is constantly facing the object.
Women's shoulders should also be covered when exploring Buddhist sites, and respectful clothing should be worn. Sri Lanka is a very polite society, so please dress appropriately. One is also not supposed to turn their back towards a representation of the Buddha.
It is generally fine to take pictures, but be careful not to take any pictures of people in front of images of the Buddha.
contact
There are many internet cafes in the Anuradhapura New Town. Anuradhapura New Town and suburbs are covered by most broadband internet service providers in Sri Lanka. Therefore reliable, low cost, high speed internet connections are available in many places.
There are numerous places from which to place an international phone call. Look for the "IDD" sign. There is a post office in Anuradhapura, as well.
However, pre-paid GSM mobile connections are almost free and charges are dirt cheap in Sri Lanka. It is more advisable to bring in a compatible handset and buy a new connection. It provides you instant access to IDD calls and high speed internet.in last 2-3 years there are very few case malaria have been reported in Sri Lanka, and there is no need to have prophylactic treatment for malaria when visiting Anuradapura, on the hand wherever in Sri Lanka there is a risk of Dengue fever.