You must activate your SIM in the UK before you go abroad.
The Lebara SIM networks works automatically when in roaming . If you have problems with accessing the internet while abroad, pls check your data settings and manually set them as below -
- APN name: uk.lebara.mobi
- Username: WAP
- Password: WAP
For device help on how to manage data settings visit https://devicehelp.lebara.co.uk/