Get a genuine Nokia charger with the standard mini USB end and a genuine apple adapter that is relevant to your phone. All up costs around £15 but lasts forever and has no issues with 24v.
I’ve had this set up for around 3 years using both 12v and 24v and never had any problems. Cheap chargers only seem to last a year if that.
Ipod, IPhone and IPad all require different rated chargers although they are to some extent backwards compatible. iPad will charge everything and iPhone will also do charge iPod. iPod chargers will only charge iPods though. It’s worth checking the packaging because they are outwardly identical.
Cheers
Neilf