Not going to do the link as it's clickbait.
But in the Express, there's a headline saying "Save £100s by doing this simple trick when charging your phone"
A tech company said that people should charge their phone at night if they are on Economy 7 as it's cheaper. Which is true - electricity is cheaper at off peak hours.
An Express journalist has done the maths - unless it came in the press release.
Electricity costs 34 p per KWH. Daily Phone charging is about 2 hours - so according to the article it costs 68p per day, £21 a month, £268 a year to charge a phone.
They have made massive error. If they actually took the time to think a bit and then think about their own bills at home, they would actually be very disappointed in the cost of charging a smart phone versus what it actually costs.
Which is about 0.1p an hour. Or 0.2 p a day (about 2 watts of power)
I can just see people worrying about this cost though and deciding to charge overnight - which is not really recommended.