What we help you with on 800 203 203
- we answer your queries regarding new and current O2 services
- we prepare offers for the activation of new services
- we change the settings of your current services and contract terms and conditions
- we activate new mobile phones
- we carry out administrativetasks and resolve issues concerning invoicing
- we provide technical support, including notification about repairs
Operating hours
The line operates every day from 7 am to 8 pm. For urgent or general matters that need to be resolved outside these hours, you will be forwarded to a nonstop customer care line.
A line that saves your time
Forget about automated voice messaging systems, or automated voice systems controlled by your mobile keypad. After you dial 800 203 203, you will be immediately connected with one of our operators.
Contact person
To speed up your communication with the Entrepreneurs and Business Account Line, you must appoint a contact person in your company. Please fill in a form that authorizes your contact person and send it by fax to 271 482 552, or by post to the address:
Business Account Line
Telefónica Czech Republic, a.s.
Za Brumlovkou 266/2
140 22 Prague 4 - Michle
Your identification number
This is a four to five-digit number allocated to you for the purpose of communication with the Entrepreneurs and Business Account Line. Enter it when calling the line.
This number speeds up the identification process and prevents unauthorized negotiations on behalf of your company. If you happen to lose or forget it, we can send it to you by post at your request.