Yes. France mains electricity is 230 volts at 50 Hz - the same as the UK. However - you may need to use an adaptor to change the pin configuration.
No
No, it wont work. But if you bring a UK or an American phone to Asia it will work fine.
France is NOT in the UK.- And even if they could be, they would probably consider it 'undignified')
The fact that the UK mobile is in France has no bearing on the cost to the original caller. The caller will pay the normal charge for a call to a UK mobile number, and the mobile user will pay any applicable surcharge for the international roaming.
Use the Related Link.
no
Yes, France is larger than the UK. France is about 643,801 square kilometres, while the UK is about 242,495 square kilometres.
From the UK
It takes two hours from the UK to France.
If the caller is from abroad So UK is +44 which if already in UK do not need to use that
you can if the mobile phone is unlocked. some companys allow you to use the same sim but with higher tariffs.