My C702 heatup when use - GSM-Forum

pavithra_uk · 10-16-2009, 14:34

My SE C702 heatup (keypad area) when it use (phone functions,GPS,video,music,games etc..) I attached a battery extranally from wires and battery remaining cool even heavy load. but keypad area of phone emits heat.

I measured current drawing from battery. its here

Here current draw from battery (C702, battery 75% charged)
Screen brightness = 80%
Idle (standby GSM) = 3-5 mA pulsating
Display on, standby = 120 mA
GPS Search = 265 mA
GSM Call (display on) = 300 mA
GSM Call (after 30 sec) = 230 mA
Screen Brightness adjustment:
50% = 60 mA
80% = 120 mA
100% = 150 mA
Normal phone functions @ 80% sc.brightness = 150-200 mA
Charging current @ 56% battery = 700 mA
Current sensing ressitor = 20 mOHM

I used another battery BST-37 to power phone via current sense ressitor. phone still emits heat and battery remain
cool even heavy load.

Help me to solve this problem. phone's talk time 15 hours. I don't know its
reseted previously by someone. because I brought used phone.

IM VERRY SORRY FOR MY ENGLISH.

10-16-2009, 14:34	#1 (permalink)
pavithra_uk Freak Poster Join Date: Oct 2009 Location: Sri Lanka Age: 39 Posts: 153 Member: 1142667 Status: Offline Thanks Meter: 16	My C702 heatup when use My SE C702 heatup (keypad area) when it use (phone functions,GPS,video,music,games etc..) I attached a battery extranally from wires and battery remaining cool even heavy load. but keypad area of phone emits heat. I measured current drawing from battery. its here Here current draw from battery (C702, battery 75% charged) Screen brightness = 80% Idle (standby GSM) = 3-5 mA pulsating Display on, standby = 120 mA GPS Search = 265 mA GSM Call (display on) = 300 mA GSM Call (after 30 sec) = 230 mA Screen Brightness adjustment: 50% = 60 mA 80% = 120 mA 100% = 150 mA Normal phone functions @ 80% sc.brightness = 150-200 mA Charging current @ 56% battery = 700 mA Current sensing ressitor = 20 mOHM I used another battery BST-37 to power phone via current sense ressitor. phone still emits heat and battery remain cool even heavy load. Help me to solve this problem. phone's talk time 15 hours. I don't know its reseted previously by someone. because I brought used phone. IM VERRY SORRY FOR MY ENGLISH.

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