WARNING: customer service is absolutely almost non existent. No phone no. Contact, only email or intermittent chat for technical support. I am visiting UK from Australia for 1 month. Tried to set up after paying online and getting uk Sim. Cannot complete the activation. Phoned support 2 days ago and technical problem had to be escalated. No one has contacted me yet. I will probably be leaving the country before it's sorted. Sent 5 messages on FB messenger today. To Lycamobile UK. No response all day. Just tried their chat, and was told by their rep, Jeanna that she was in Denmark and to try again after an hour. EXTREMELY POOR SERVICE AND SUPPORT. I suggest using another SIM provider