RoamTheWorldCellPhones.com

Cellphone GSM Frequencies: 900/1800

(This means you will need a GSM cellphone that will work on 900MHz or 1800Mhz to use it in Slovakia.)

Cellular carriers for Slovakia

Orange Slovensko a.s. (Orange SK)

Frequency: GSM 900/1800
Website: www.orange.sk

Coverage Map

T-Mobile Slovensko, a.s. (T-Mobile SK)

Frequency: GSM 900/1800
Website: www.t-mobile.sk

Coverage Map

Telefónica O2 Slovakia, s.r.o. (O2 - SK)

Frequency: GSM 900/1800
Website: www.sk.o2.com

Coverage Map (NONE)

If you've used either of these networks or roamed in Slovakia, please post about your experience and the cost. Feel free to ask questions.