SlashGear | Lenovo S2 smartphone promises super-security SlashGear Lenovo has taken the wraps off of its S2 smartphone, an Android handset that the company reckons is significantly more secure than rival devices thanks to kernel-level encryption. That security protects personal information, helps avoid phishing apps ... Lenovo IdeaTab S2 10 and S2 smartphone debut [CES 2012] Lenovo Unveils Android-Powered IdeaTab S2 10, S2 Smartphone, And ... Lenovo puts Android 4 on 55-inch TV and 10-inch tablet |