Consulate
As with any big city, never let your guard down, because big cities such as Surabaya have a reputation among Indonesians for a mid crime rate. That said, Surabaya has few real dangers for visitors apart from the perils of crossing the very busy roads the secret is to raise an arm while crossing, and to progress with a predictable speed and bearing, allowing the traffic to flow around you. Don't walk on the streets, especially at night other than the CBD area, if you can avoid it since you won't have anything to sightsee. Bring along your face mask if you travel by foot during rush hour since the traffic will be chaos and the air pollution is bad. Around 4.30 PM to 6.30 PM Be polite to the people, since Surabayans tend to swear easily which are very common. Do not easily trust people you have just met, even if they look friendly.
talk
The national language, Bahasa Indonesia Indonesian, is the medium of government, commerce and education. Many locals also speak the regional language, Javanese sometimes with a local accent. There is a surprising amount of English visible in Surabaya on advertising and signs, and English is the most widely understood foreign language.
by phone
The international code for Indonesia is +62.Local Surabaya phone numbers will start +62 31 xxx xxxx or +62 31 xxxx xxxx for the CDMA provider or +62 8xx xxxx xxxx for the GSM provider.
There are four main telecommunication providers in Surabaya: Telkom, Telkomsel, Indosat, and XL.
To make an international call from Surabaya, dial the access code 001 for Indosat, 007 for Telkom/Telkomsel, or 008 for Indosat, followed by the country code, area code and party's number. Recently the providers have started offering cheaper rates for calls using Internet telephony routes VOIP. The access codes for this cheaper service are 01016 for Indosat provider and 01017 for Telkom and Telkomsel provider.