Digitimes is reporting that both Apple and Samsung are expected to introduce wireless charging solutions for their "flagship models" of smartphones in 2013. While their "industry sources" pinpoint Qi inductive charging as the technology to be used by Samsung, Apple appears to be working on their own version of wireless charging.Apple is likely to adopt the wireless charging technology developed internally, but it remains unknown if the next-generation iPhone will come with built-in wireless charging capability or with other attached accessories, said the sources.Samsung's solution is said to be likely an add-on accessory to replace the back-cover of their smartphones. Palm used a similar back-cover replacement option for their