A new update of android 5.0 lollipop comes to 5.1, which have some better improvements and also introduce some unique security features that really change your experience. Google gives some new essential features with android 5.1 tablets and mobile phones like dual SIM card support, HD voice and the most advanced device protection. Not just these updates, the 5.1 has some new enhancements like connecting WI-FI networks and managing you paired Bluetooth devices directly from quick settings. The feature HD voice will give you Crystal clear sound during calls between two 5.1 devices, which you’re not experienced yet. Multiple SIM cards mean the android 5.1 devices have multiple SIM slots and use dual SIM card functionality that you can easily use specific sim for specific tasks.
What is Device Protection ?
A new security feature comes with Android lollipop 5.1 , give devices a unique security option which you can use and secure your device from easy hard reset, which earlier anyone can easily reset android devices to factory settings and remove all of your google account with data and unlock device yourself without any confusion. But now, google changes the security and gives device protection which still not remove google sign-in lock until you sign in to your device even you hard reset the device.