Boats cross the river Rio Mamore from Guajara-Mirim to Guayaramerin in Bolivia. This crossing is about 5.5 hours from Porto Velho. You can reach this crossing as well from Trinidad in Bolivia by boat, which takes 5 days and is a very adventurous off the beaten track experience.
Internet cafes (Lan houses) are increasingly common, and even small towns often have at least one spot with more or less decent connections.
An increasing number of hotels, airports and shopping malls also offer hotspots for Wi-Fi with your laptop computer or of course smartphone. Sometimes it is free, sometimes you need to register and there is a time limite and sometimes you need to pay a small amount for (day) use.
See also International Telephone Calls
The country calling code to Brazil is: 55. To make an international call from , the code is: 0014. All cities use the following emergency numbers: 190 (police), 192 (medical) and 193 (fire department). However, if you dial 911 or 112 while in Brazil, you will be redirected to the police.
Brazil uses two-digit area codes, and phone numbers are eight digits long. Numbers beginning with digits 2 to 5 are land lines, while eight-digit numbers beginning with digits 6 to 9 are mobile phones.
Public payphones use disposable prepaid cards, which come with 20, 40, 60 or 75 credits. The discount for buying cards with larger denominations is marginal. Phone booths are nearly everywhere, and all cards can be used in all booths, regardless of the owner phone company. Cards can be bought from many small shops, and almost all news agents sell them.
Brazil has 4 national mobile operators: Vivo (Telefónica Group), Claro (Telmex/América Móvil Group), OI and TIM (Telecom Italia Group), all of them running GSM and HSDPA/HSPA+ networks. Pay-as-you-go (pré-pago) SIM cards for GSM phones are widely available in places like newsstands, drugstores, supermarkets, retail shops, etc.
Correios is the national postal service of Brazil. It is a government run postal service and overseen by the Brazilian Ministry of Communications. Post offices are generally open from Monday to Friday from 09:00am to 5:00pm, although post offices located in shopping malls have their own opening hours, usually from 10:00am to 10:00pm. There are no set opening hours at weekends and as post office owners can choose when to open and close. More and more post offices are open until 1:00pm on Saturdays though. You can check things at the nearest post office.
Sending postcards, letters and parcels is a rather straightforward process and services are reliable, though not overly fast when sending post internationally, mostly taking about a week to the USA and Europe, and there is a track-and-trace service for this as well. Domestically, there are both next day as well as more expensive same day delivery options. Stamps are available at post offices, as well as some kiosks or other places where they sell postcards.
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