Asus PadFone 2: The Asus PadFone 2 features a 4.7-inch display with a resolution of 312 ppi. Powered by a quad-core 1.5 GHz Krait processor and 2 GB of RAM, this phone runs on Android 4.0 ICS, but is upgradeable to Android 4.1.1 Jelly Bean. Available in three variants with 16 GB, 32 GB or 64 GB of internal storage space, it doesn’t have a microSD card slot which limits you to the internal space. But the PadFone 2 does have a 13 MP rear camera as well as a 1.2 MP front-facing camera. A 2140 mAh battery promises a talk-time of up to 15 hours. Google Nexus 4: Google’s latest flagship smartphone by LG also has a 4.7-inch display with a slightly higher resolution of 318 ppi. Available in 8 GB and 16 GB models, it also lacks a microSD card slot, which is a huge disappointment. Like the PadFone 2, the Nexus 4 is also powered by a 1.5 GHz quad-core Krait processor and 2 GB of RAM, but it runs on Android 4.2. The rear camera, however, is just 8 MP, while the front-facing camera has a resolution of 1.3 MP. The battery is almost the same, a 2100 mAh one, which gives the phone up to 15 hours of talk-time on a single charge. Samsung Galaxy S3: The bestselling flagship smartphone from Samsung features a 4.8-inch screen with a resolution of 306 ppi. The Galaxy S3 is powered by a quad-core 1.4 GHz Cortex A9 processor but has just 1 GB of RAM and runs on Android ICS, which can be upgraded to Android 4.1.2 Jelly Bean. You can choose from 16 GB, 32 GB or 64 GB of internal storage, but the best thing about the Galaxy S3 is its microSD card slot, so you can expand your phone’s storage. The phone has an 8 MP rear camera and a 1.9 MP one in the front. It also has a similar 2100 mAh battery, which promises a talk-time of over 11 hours.
