Nokia Lumia 900 upgrades WP 7.8

WP7.8 is almost no different with WP8 on function and software, the different is on hardware and performance. WP7.8 and WP8's most application are compatible, WP7.8 can get dynamic magnetic stickers of manual scaled-down version, electronic wallets, smart photo ect WP 8 function. The Nokia Lumia 900 is WP7.5 phone, it can upgrade WP7.8, users can install pass OTA.