In most parts of the US it costs less than a tenth of a cent to charge an iPhone. I think it would be extremely rare that any business or organization would cho

In most parts of the US it costs less than a tenth of a cent to charge an iPhone. I think it would be extremely rare that any business or organization would choose saving the minuscule cost of electricity over allowing people who need a charge to take one, so in practice it doesn't seem unreasonable to assume it's okay in most situations.