Apple iPhone 4 16GB ?

HI ALL, I AM SELLING MY APPLE IPHONE 4 16GB COLOUR BLACK COMES WITH BLACK LEATHER CASE, HEAD PHONES AND CHARGER PLUG ONLY. SELLING BECAUSE I HAVE A IPHONE 5 EVERYTHING WORKS PROPERLY EXCEPT THE HOME BUTTON. HOW I USED THE PHONE WAS BY GOING TO SETTINGS APPLICATION BY SELECTING (GENERAL) THEN (ACCESSIBILITY) PHYSICAL AND MOTOR TOUCH (ON) (ASSISTIVE TOUCH) THIS WORKS AS A HOME BUTTON TO GO TO ALL THE APPS YOU WANT TO SELECT. JUST SLIGHTLY CHIPPED AT THE RIGHT HAND CORNER EDGE. PLEASE SEE BELOW SPEC Usability Display Resolution 640x960px Display Color 16M Display Technology TFT Input / Navigation Touch Screen Display Stand-by Time 300h Talk Time 14h Vibration Available Ringtones MP3 Polyphonic Connectivity Compatible Networks HSDPA 2100 (3.5G) HSDPA 1900 (3.5G) HSDPA 850 (3.5G) HSDPA 900 GSM 900 GSM 1800 GSM 1900 GSM 850 Positioning System Integrated GPS WLAN Wi-Fi (wireless LAN) USB v2.0 Bluetooth v2.0 Audio Output 3.5mm Audio Connector TV Out HDMI (TV Out) EDGE Class 10 GPRS Class 10 Software Operating System iOS Hardware Processor Speed 1GHz RAM 512MB Internal Memory 16GB Sensors Gesture Control Proximity Sensor Accelerometer Camera Resolution 5 Megapix Camera Flash LED Video Recording Available Video Telephony Available Battery 1420 mAh Other Functions Digital Compass Ergonomics Dimensions 115.2x58.6x9.3mm Weight 137g Material Scratch-Resistant Glass THANK YOU