I have a friend visiting from the UK - she does not have a Canadian adaptor for her Samsung charger? Can she use my Canadian Samsung charger to charge up her UK Samsung cell phone? It is not the same model but the charger fits her cell phone. Also, could she use the car charger? I don't want to risk 'blowing' my charger but need reassurance that it will be safe for her to use it.
Canada uses 120V. While in the UK they use 230V. I don't think it's safe to use your charger with your friends UK phone. Your friend's phone may break if you do this. But I still suggest you talk with an electrician so you can get a better idea if it's really safe to use or not.