Electricity is 230 volts;50 hertz and you can find two and three pin sockets in Tanzania. Recommended to bring multiplug.
Most hotels and lodges have facility of internet. There are internet cafes in most of towns and some cafes and restaurants that have internet facilities in large towns.
Tanzania telephone country code is 255. When you make an international call, dial ☎000, followed by the country code, local area code (without the initial “0”) and telephone number.
If you want to buy cell phone and SIM card it is easy to buy with your passport copy at shops. The companies, Airtel and Vodacom have widely network in Tanzania and Zantel has good network in Zanzibar and Pemba.
When you want to take a picture, we would recommend you to ask first.