On 25,July, Sprint released android 2.3.5, the first to be improved is Nexus S 4G. The OTAupdate also fixes some minor WiFi bugs, adds a 4G toggle widget, and oficially enables NFC. Hopefully this update will boost Nexus S 4G sales as well. Now, the real question here is "Are there actual improvements in 4G speeds?" Engadget says yes, as they have provided us with some screenshots showing 4G speeds on an updated Nexus S 4G (the speeds on the left are the updated device, and those on the right are from a 2.3.4 Nexus S 4G).