Mobile info is a most powerful and reliable app to know & monitor iPhone hardware specification and performance.
App includes
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Battery Level
Storage Level
Device total storage
Storage Availability
Since Boot Time
Ram Usage
Wifi Usage
CPU Usage
Initial OS version
Latest OS Version
Dimension of device
Detailed CPU info
Detailed Memory Info
Detailed connectivity
Detailed Camera info
Detailed Battery info
Tools
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GPS with Map and latitude & longitude
Realtime CPU Monitor
Detailed Storage info
Memory info
Band Frequency
Gyroscope
Barometer
Proximity Sensor
Magnetometer
Acceleratormeter
Connection rate
Touch ID
Touch Screen
LCD Colors
Vibrations
Camera