Innovation Free solar charging for cell phones in Belgrade Free solar charging for cell phones in Belgrade Sign in or buy a plan to view this innovation View plans Sign in Vodafone’s solution “The Strawberry Tree” brand butler 7th July 2011 Email: jagodica@senergy.rs">jagodica@senergy.rs</a> Website: www.senergy.rs/strawberry-drvo/?lang=en Facebook Twitter Tumblr Linked In Email Download PDF